During contraction of a muscle, calcium ions bind to troponin, which moves tropomyosin out of the way. This now uncovers binding sites on the actin myofilament.
Contraction of a muscle occurs when the actin and myosin myofilaments slide past each other, causing the sarcomere (the basic unit of a muscle) to shorten.
Calcium ions play a crucial role in this process by binding to the regulatory protein troponin, which is located on the thin actin myofilament. This binding causes a conformational change in the troponin-tropomyosin complex, which moves tropomyosin out of the way and uncovers the binding sites on the actin myofilament.
With the binding sites now available, myosin heads can attach to actin, forming cross-bridges. The cross-bridges then undergo a series of conformational changes that result in the sliding of the actin myofilament past the myosin myofilament, shortening the sarcomere and causing muscle contraction.
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Sweat glands in the armpits secrete perspiration with a ph close to neutral (7.0). how does this fact help explain body odor in this area as compared to other parts of the skin
The neutral pH of the sweat secreted by the sweat glands in the armpits explains why body odor is more prominent in this area than in other parts of the body.
Unlike other parts of the skin that produce sweat with a slightly acidic pH, the neutral pH of the armpit sweat creates an ideal environment for certain bacteria to thrive. These bacteria, which are commonly found in the armpits, metabolize the proteins and lipids from the sweat and secrete certain compounds that are responsible for the unpleasant body odor in this area.
In other parts of the body, where the sweat has a slightly acidic pH, these same bacteria cannot thrive and therefore do not produce the same compounds that contribute to body odor.
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the graph shows data frm ice cores
1. How did you find using indigenous musical instruments?
2. Aside from the concepts and principles in sound you learned and applied for a perfect performance what order insights can you identify?
3. Can you extend your designs to come up with good quality instruments using indigenous materials?You can be famous with your artworks.
pag mali-mali sagot report ko
1. How did you find using indigenous musical instruments?
2. Aside from the concepts and principles in sound you learned and applied for a perfect performance, what other insights can you identify?
3. Can you extend your designs to come up with good quality instruments using indigenous materials?
1. Using indigenous musical instruments can be a rewarding experience, as it allows one to explore the rich cultural heritage and unique sounds of various regions.
These instruments often have a distinct timbre and playing technique that can bring new dimensions to a performance.
2. In addition to the concepts and principles of sound, other insights that can be identified when using indigenous musical instruments include understanding the cultural context and history behind each instrument, the importance of preserving and promoting traditional art forms, and the opportunity to blend different musical styles to create innovative compositions.
3. Yes, it is possible to extend your designs and create high-quality instruments using indigenous materials.
By combining traditional craftsmanship with modern design techniques, one can develop innovative instruments that maintain their cultural roots while delivering excellent sound quality. This fusion of old and new can result in unique and appealing artworks that have the potential to gain recognition and become famous.
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4. Which of these is a major cause of extinction?
A. biodiversity
B. loss of habitat
C. the greenhouse effect
D. use of plants for medicine
Answer:
The answer would be B, loss of habitat.
Explanation:
The major causes of extinction are:
Loss of habitat
Climate change
Catastrophic events
Disease
Predators
Competition
Lack of genetic diversity
Pollution
The yeast cell Saccharomyces cerevisiae is moved from an environment containing oxygen to an entirely oxygen-free environment. What type of metabolic changes/ reactions will occur in the yeast cell? Describe your answer within two to three sentences
In the absence of oxygen, Saccharomyces cerevisiae will switch from aerobic respiration to anaerobic fermentation, producing ethanol and carbon dioxide as byproducts. This metabolic shift will result in decreased ATP production, but the yeast will still be able to generate energy to sustain its survival.
When a yeast cell such as Saccharomyces cerevisiae is moved from an environment containing oxygen to an entirely oxygen-free environment, it will undergo a metabolic shift from aerobic respiration to anaerobic fermentation.
Aerobic respiration is a process that requires oxygen and occurs in the mitochondria of eukaryotic cells, including yeast cells. During aerobic respiration, glucose is broken down in a series of reactions to produce ATP (adenosine triphosphate), the primary energy source of the cell. Carbon dioxide and water are also produced as byproducts.
In the absence of oxygen, yeast cells cannot perform aerobic respiration and must rely on anaerobic fermentation for energy production. During fermentation, glucose is broken down into pyruvate in a process called glycolysis, which occurs in the cytoplasm of the cell. Unlike aerobic respiration, fermentation does not require oxygen.
In yeast cells, pyruvate is then converted to ethanol and carbon dioxide in a process called alcoholic fermentation. This process regenerates the coenzyme NAD+ that is needed for glycolysis to continue and produces ATP as well. However, unlike aerobic respiration, the production of ATP during fermentation is relatively inefficient.
As a result of this metabolic shift, the yeast cell will produce less ATP, and the byproducts of fermentation, such as ethanol and carbon dioxide, will accumulate in the cell and its environment. In addition, the cell's metabolic rate will decrease since fermentation is less efficient than aerobic respiration.
Overall, when the yeast cell Saccharomyces cerevisiae is moved from an environment containing oxygen to an entirely oxygen-free environment, it will undergo a metabolic shift from aerobic respiration to anaerobic fermentation to produce energy.
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I need help with my school work.
It's about: Plate Tectonics
1) Where are Active Volcanoes located?
2) Where are Earthquakes common?
3) What are the layer's of Earth that you can see?
4) What four boundaries do you see?
5) How would you describe the motion of plates in a transform boundary?
6) Where on Earth can you find transform boundaries?
7) How would you describe the motion of plates in a collision Zone?
8) Where on Earth can you find collision Zone?
9) How would you describe the motion of plates in a subduction?
10) Where on Earth can you find subduction Zones?
11) How would you describe the motion of plates in a divergent boundary?
12) Where on Earth can you find divergent boundaries?
Active volcanoes are located primarily along tectonic plate boundaries, such as the "Ring of Fire" in all of the Pacific Ocean.
Earthquakes are common along the boundaries of tectonic plates, mostly the Ring of Fire as well as the Mediterranean region.The visible layers of the Earth are the crust, mantle, and core.The four types of boundaries make up divergent, convergent, transform, and plate boundary zones.Plates in a transform boundary slide past one another horizontally, leading to earthquakes.Transform boundaries can be seen in places such as the San Andreas Fault in California and the Alpine Fault in New Zealand.Plates in a collision zone move towards one another, making mountains to form.Collision zones can be seen in places like the Himalayas and the Andes.Plates in a subduction zone move towards each other, with one plate being forced under the other and leading to volcanic activity.Subduction zones can be seen along the Ring of Fire and in places like the Pacific Northwest and Japan.Plates in a divergent boundary leave away from one other, making magma to rise and form new crust.Divergent boundaries can be seen in Mid-Atlantic Ridge and the East African Rift.Where are Earthquakes common?Earthquakes are most prevailing along plate barriers as well, containing transform boundaries, differing boundaries, and converging boundaries.
There are three main tiers of the Earth that you can see: the coating, the mantle, and the core. The four main types of confines are divergent, converging, transform, and plate perimeter zones.
The plates in a transform barrier slide past each other in opposite guidance. Transform boundaries maybe found near the San Andreas Fault in California, USA. In a collision district, the plates move towards each other and collide, making uplift and pile building.
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is the pronator muscle concentric during arm wrestling and winning
Yes, during arm wrestling and winning, the pronator muscle performs a concentric contraction. This means the muscle is actively shortening while generating force to rotate the forearm and help maintain a winning position.
During arm wrestling and winning, the pronator muscle is primarily isometric (meaning it is maintaining a static contraction) rather than concentric (meaning it is shortening as it contracts). The pronator muscle is responsible for rotating the forearm inward, and it is activated during arm wrestling to resist the opponent's attempts to rotate the forearm outward. When the arm wrestler successfully pins their opponent, the pronator muscle is maintaining a sustained contraction, rather than actively shortening or lengthening.
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Which role does photosynthesis play in the flow of energy? (1 point)
Photosynthesis plays a critical role in the flow of energy in the environment. During photosynthesis, energy from the sun is used by plants to convert carbon dioxide and water into carbohydrates, such as glucose.
This process also releases oxygen into the atmosphere. This energy is then transferred up the food chain as animals consume the plants and use the energy stored in the carbohydrates to fuel their activities. The energy is then passed on to other animals as they consume the animals that ate the plants.
This process of energy transfer is known as the flow of energy from the sun, through photosynthesis, to the rest of the environment. Ultimately, photosynthesis provides the necessary energy for life on Earth to exist by allowing producers to convert the sun’s energy into a form usable by other organisms.
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Correct question is :
what role does photosynthesis play in the flow of energy? (1 point)
can you think of a co-called fruit that is botanically speaking, not a fruit at all?
Answer:
cucumber or tomato may be
Grasshoppers eat
Haws consume
Where do deer get their energy
Deer get eaten by
Snake get eaten by
Squirrels are consumed by
Predict what would happen to the following population in the ecosystem if all rabbits died
The number of shrubs would
The number of mountain lions would
The number of deer would
Predict what would happen to the animals ecosystem if all lions died from a disease
Answer:
Grasshoppers get eaten by Shrews and Insect-Eating birds.
Hawks consume squirrels, shrews, Insect-Eating birds, and snakes.
Deer get their energy from shrubs and trees.
Snakes get eaten by Mountain Lions and Hawks.
Squirrels are consumed by hawks.
If all the rabbits died, there would likely be a decrease in the amount of snakes and Mountain Lions because there are no rabbits available to eat.
The number of of shrubs would increase because rabbits won't be feeding on them.
The number of mountain lions would decrease because there are no rabbits to eat.
The number of deer would increase because there are more shrubs available for them to eat.
If all the Lions died, the amount of deer, snakes, shrews, and rabbits would increase because there are no longer mountain lions to eat them.
Explanation:
How can I test my hypothesis?
Earth Science
Hypothesis: Different materials will change the temperature at different rates when exposed to the same amount of heat. This is because the different materials absorb heat at different rates. The Sun's radiation warm the surface of the Earth. Among the factors that affect heating on the planet's surface is the altitude of the location. The elevation affects the climate of the place. UV increases in high altitude places. The latitude changes the way the Sun's rays impact the Earth. It changes the light of the daylight hours in various places of the Earth. Solar ultraviolet radiation impacts the surface of the planet. The surface "keeps" the heat and reflects it. Surfaces such as concrete, metal, and sand from the beach reflect UV onto a person. UV radiation can diffuse although a person is under shade. Scattered UV can reach the person. The Sun's radiation warm the surface of the Earth. Among the factors that affect heating on the planet's surface is the altitude of the location. The elevation affects the climate of the place. UV increases in high altitude places. The latitude changes the way the Sun's rays impact the Earth. It changes the light of the daylight hours in various places of the Earth. Solar ultraviolet radiation impacts the surface of the planet. The surface "keeps" the heat and reflects it. Surfaces such as concrete, metal, and sand from the beach reflect UV onto a person. UV radiation can diffuse although a person is under shade. Scattered UV can reach the person
To test the hypothesis, conduct an experiment where different materials are exposed to the same amount of heat and measure the temperature change. Control variables, vary materials, and repeat experiments.
To ensure a fair test, you would need to control for variables such as the amount of heat applied, the starting temperature of the materials, and the duration of the experiment. You would also need to use materials of the same size and shape to ensure consistent results.
Additionally, you could vary the type of materials you use, such as metal, wood, and plastic, to see if there is a significant difference in how they absorb and retain heat. You could also repeat the experiment multiple times to ensure the results are consistent and reliable.
To relate your hypothesis to Earth Science, you could investigate how different materials found in various environments, such as soil, rocks, and water, absorb and retain heat differently, and how this impacts the climate of those regions. You could also explore how the altitude and latitude of a location affect the absorption and retention of heat by different materials.
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Which system has to do with skin, hair, and nails?.
Answer: The Integumentary system
Explanation:
:)
Order these events that occur during secondary succession correctly from 1-5.
The correct order of the secondary succesion in the forest is:
An oak-hickory forest is cut down and cleared for farming.The farm is abandoned.Crabgrass thrives in the hot, dry environment of the bare field and adds nutrients to the soil.Small shrubs invade the field, shading the soil and allowing pine seedlings to survive.Hardwood trees replace the pines and succession is complete.What is secondary succession?Secondary succession is the process of ecological succession that occurs after a disturbance or disruption of an existing ecosystem. It involves the gradual establishment and development of a new ecosystem in an area that was previously occupied by a different community of organisms.
Unlike primary succession, which occurs in areas where there was previously no ecosystem, secondary succession occurs in areas where an ecosystem has been disturbed or destroyed, but the soil and some plant and animal species remain. Examples of disturbances that can lead to secondary succession include wildfires, clear-cutting of forests, and abandoned agricultural fields.
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6. Snyder ends her talk by
saying, "Darwin knew what
we seem to have forgotten,
that science is not only for
scientists. " What do you
think that is meant by this?
Do you consider yourself to
have a basic scientific
literacy? Explain and
discuss your thoughts.
Snyder's speech emphasize the significance of owning our own media literacy and using it to make informed decisions. Being media literate is an ongoing process, and we must constantly work on developing and refining our abilities.
In her talk, Snyder ends by saying, "We are the ones we've been waiting for." This statement implies that the responsibility of promoting media literacy and critical thinking lies with each individual person. It means that we should not wait for others to provide us with the necessary tools to navigate the complex media landscape. Instead, we should take an active role in developing our own media literacy skills and using them to make informed decisions.
Regarding the question of whether I consider myself to be media literate, I would say that I am continually working to improve my skills. With the abundance of information available today, it is essential to develop the ability to evaluate sources critically, identify biases, and recognize misinformation. I believe that being media literate is an ongoing process, and it requires a willingness to engage in lifelong learning.
In conclusion, Snyder's statement emphasizes the importance of taking responsibility for our own media literacy and using our skills to make informed decisions. Being media literate is an ongoing process, and it is essential to continuously work on developing and refining our skills.
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Why would it be better to be an r selected species if the water resources in an area were to become more limited over a short period of time
Answer:
R selected species are better equipped to survive environmental change because their quick population turn over can quickly adapt.
What type of indian tree has roots that grow down from its branches?.
The type of Indian tree that has roots growing down from its branches is called a banyan tree. Banyan trees are known for their extensive aerial roots that grow down from the branches and take root in the soil, allowing the tree to cover a large area.
Banyan trees are native to the Indian subcontinent and are considered sacred in Hinduism, Buddhism, and Jainism. They are also valued for their ecological significance as they provide habitat for a variety of species, including birds, insects, and mammals.
The aerial roots of banyan trees are not only functional for the tree's survival but also contribute to its aesthetic beauty. The tree's roots and branches can create a mesmerizing natural canopy that provides shade and shelter to those who seek refuge underneath. Because of their unique characteristics, banyan trees are often used as symbols of wisdom, strength, and longevity in Indian culture.
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what is acute myocardial infarction and ventricular fibrillation
Acute myocardial infarction, commonly known as a heart attack, occurs when blood flow to a part of the heart is blocked, leading to damage or death of the heart muscle.
This can happen due to a build-up of plaque in the coronary arteries or a blood clot. Symptoms can include chest pain or discomfort, shortness of breath, sweating, nausea, and lightheadedness.
Treatment involves quickly restoring blood flow to the affected area of the heart, usually through medication or procedures such as angioplasty or coronary artery bypass surgery.
Ventricular fibrillation is a potentially life-threatening cardiac arrhythmia that can occur during a heart attack or other heart-related conditions. It happens when the heart's lower chambers, the ventricles, begin to beat irregularly and rapidly, instead of contracting in a coordinated manner.
This results in an ineffective pumping of blood and can cause a sudden cardiac arrest. Treatment involves emergency medical attention, including cardiopulmonary resuscitation (CPR) and defibrillation to restore the heart's normal rhythm.
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Learning Task 1: Let's Compare.
Directions:
1. Study carefully the sequence of the amino acid.
2. Given are the sequence of amino acids in the cytochrome C of the human, chimpanzee, gorilla,
Rhesus monkey, horse, and kangaroo.
Note: Cytochrome C is a respiratory enzyme located inside the mitochondria.
3. Identify the differences using the amino acid sequence of human as
reference. Refer to table 1 for your answer.
4. Supply the missing amino acid sequence of chimpanzee, gorilla, Rhesus
monkey, horse, and kangaroo to complete Tables 2, 3, and 4 in a separate sheet of paper.
5. Complete Table 5 to show the number of amino acid differences and the position which they vary,
The sequence of the amino acids in the cytochrome C of the humans, chimpanzee, gorilla, rhesus monkey, horse and kangaroo is as follows:
1. First, study the amino acid sequence of human cytochrome C carefully, as it will serve as your reference for comparison.
2. Obtain the amino acid sequences of cytochrome C for the other species (chimpanzee, gorilla, Rhesus monkey, horse, and kangaroo). You can usually find these sequences in scientific databases or textbooks.
3. For each species, compare their cytochrome C sequence with the human sequence. Identify the positions at which the amino acids differ from the human sequence.
4. To complete Tables 2, 3, and 4, fill in the missing amino acid sequences of chimpanzee, gorilla, Rhesus monkey, horse, and kangaroo. You can use the information you gathered in step 2 for this purpose.
5. Finally, to complete Table 5, note down the number of amino acid differences for each species and the positions at which they vary from the human sequence.
By following these steps, you should be able to successfully compare the cytochrome C amino acid sequences of these species and understand the differences between them.
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In this relationship the barnacles Drive benefit there’s no benefit of this relationship is an example of
The statement "In this relationship, the barnacles drive benefit; there’s no benefit of this relationship" is an example of commensalism.
Commensalism is a type of symbiotic relationship between two organisms in which one organism benefits while the other is not affected either positively or negatively.
In this relationship, the barnacles are the beneficiary organism while the other organism is neither helped nor harmed.
Barnacles are often found attached to the surface of whales, turtles, and other marine animals. The barnacles gain a habitat and protection from predators by attaching themselves to these animals.
Meanwhile, the host animals are neither helped nor harmed by the barnacles' presence. This relationship is an example of commensalism since only one organism is benefited while the other is unaffected.
Commensalism is one of the three types of symbiotic relationships, along with mutualism and parasitism. Mutualism benefits both organisms, while parasitism benefits one organism at the expense of the other.
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Why did it take 300 years for another important discovery about space to take place?
Answer:
Depends largely on the context. Generally speaking, it took 300 years or more for another important discovery about space to take place due to a combination of technological limitations, changing social and political dynamics, and limited funding for scientific research.
Genetic variation occurs in
asexual reproduction.
sexual reproduction
Answer:
by sexual reproduction
Explanation:
cause in asexual rep. thay are obtained by the genetic material splite from the mother one like bacteria, yiest and others so it has almost genetic similarity b/n mothers and the baby.
so it is sexual reproduction.
how many types of rocks can form from the rock cycle?3 kinds2 kinds1 kinds4 kinds
Answer:
3 kinds.
Explanation:
3 kinds of rocks can form from the rock cycle. The three kinds of rocks are igneous, sedimentary, and metamorphic.
There are three types of rocks that can form from the rock cycle: igneous, sedimentary, and metamorphic.
The rock cycle is the process by which rocks are continuously transformed between these three types.
Igneous rocks are formed from the cooling and solidification of magma or lava.
Sedimentary rocks are formed from the accumulation and cementation of rock fragments, mineral crystals, or organic material.
Metamorphic rocks are formed from the alteration of pre-existing rocks by heat, pressure, or chemical activity.
The rock cycle is a continuous process that can take millions of years to complete. Rocks can undergo changes due to physical, chemical, and biological processes, and can transform from one type to another.
The type of rock that forms from the rock cycle is determined by the environmental conditions that the rock is exposed to, such as temperature, pressure, and chemical activity.
The rock cycle is an important concept in geology, as it helps to explain how rocks are formed and the processes that shape the Earth's surface.
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Question 1
Compares to plain water, saline solution in hospital IVs are?
o hypotonic so your blood cells don't burst.
o hypertonic so your blood cells don't burst.
Isotonic so your blood cells don't burst.
O plain water so your blood cells don't burst.
Compared to plain water, saline solution in hospital IVs is isotonic so your blood cells don't burst. The correct answer is option C.
Isotonic solutions have the same concentration of solutes (such as salts and sugars) as human blood, which means that they do not cause a net movement of water into or out of the cells. This is important because if a solution is too hypertonic (higher concentration of solutes than blood), water will move out of the cells and cause them to shrink. On the other hand, if a solution is too hypotonic (lower concentration of solutes than blood), water will move into the cells and cause them to swell and potentially burst.
Saline solution, which is a mixture of sodium chloride and water, is commonly used in hospital IVs to replenish fluids and electrolytes in patients. It is isotonic with human blood, meaning that it does not cause any significant changes in the concentration of solutes in the blood or the cells. This makes it a safe and effective way to deliver fluids and medications to patients without causing any adverse effects on the cells.
So, the correct answer is c) isotonic so your blood cells don't burst.
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The question is -
Compared to plain water, saline solution in hospital IVs is?
a) hypotonic so your blood cells don't burst.
b) hypertonic so your blood cells don't burst.
c) Isotonic so your blood cells don't burst.
d) plain water so your blood cells don't burst.
Determine whether the following actions are harmful to the environment or help to conserve the environment. harms the environment conserves the environment
The following actions are harmful to the environment, it is important to be mindful of the impact our actions have on the environment and to strive to make choices that help to conserve natural resources and protect the planet.
Here are some examples of actions and whether they harm or conserve the environment:
1. Dumping toxic waste into a river: harms the environment
Dumping toxic waste into a river can cause serious damage to the ecosystem, including harming aquatic life and contaminating the water supply for people and animals.
2. Planting trees in a deforested area: conserves the environment
Planting trees in a deforested area can help to restore the natural ecosystem, provide habitat for wildlife, and help to mitigate the effects of climate change.
3. Driving a car that gets poor gas mileage: harms the environment
Driving a car that gets poor gas mileage contributes to air pollution and greenhouse gas emissions, which can harm the environment and contribute to climate change.
4. Using energy-efficient light bulbs in your home: conserves the environment
Using energy-efficient light bulbs can help to reduce energy consumption and greenhouse gas emissions, conserving natural resources and helping to mitigate the effects of climate change.
5. Using pesticides on crops: harms the environment
Using pesticides on crops can harm beneficial insects, birds, and other animals, as well as pollute soil and water resources.
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Giant viruses are challenging the historical notion that viruses are nonliving things. What characteristic do giant viruses possess that make scientists think twice about their classification?
Giant viruses possess characteristics such as large genome size, complex structure, and the ability to perform certain metabolic functions that make scientists reconsider the traditional classification of viruses as nonliving things.
Traditionally, viruses are considered nonliving entities because they lack the necessary machinery to replicate and metabolize on their own, and instead rely on host cells to carry out these functions.
However, giant viruses challenge this notion because they possess genes that allow them to perform certain metabolic functions on their own, such as the ability to synthesize proteins and produce ATP.
Additionally, giant viruses have much larger genome sizes compared to typical viruses, with some exceeding the size of small bacteria. Their complex structures also resemble those of some bacteria, with internal membranes and even organelles such as nuclei.
These characteristics have led some scientists to propose that giant viruses may represent a fourth domain of life, alongside bacteria, archaea, and eukaryotes.
Others argue that they may simply represent an extreme form of virus evolution. Regardless of their ultimate classification, the discovery of giant viruses has sparked new questions and challenges to our understanding of what constitutes life.
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Soaking up of digested foods in liquid form is best described as
A. Absorption
B. Assimilation
C. Digestion
D. Excretion
Answer:
Absorption is the answer
I need help I have an assignment and its an energy food pyramid and I can't think of any good animals from the tropical rainforest
Answer:
Gorilla, okapi, anaconda , jaguar, toucan & most importantly CAPYBARA
Explanation:
Identify the steps of the lytic cycle.
(label 1-5)
The pieces made in replication are assembled to complete the new virus particles.
The new viral nucleic acid and viral proteins are replicated.
The virus attaches to the host cell.
The original virus releases a protein that causes the cell wall to burst (lysis), killing the cell and releasing viruses.
The hostâs DNA is disassembled and the virus takes over the cellâs metabolic activity
The lytic cycle is a viral replication cycle that involves the infection, replication, and lysis (destruction) of the host cell. It is commonly observed in bacteriophages (viruses that infect bacteria). The steps of the lytic cycle, labeled 1-5, are as follows:
The virus attaches to the host cell.
The virus releases a protein that causes the cell wall to burst (lysis), killing the cell and releasing viruses.
The host's DNA is disassembled, and the virus takes over the cell's metabolic activity.
The new viral nucleic acid and viral proteins are replicated.
The pieces made in replication are assembled to complete the new virus particles.
During the lytic cycle, the virus attaches to the host cell and injects its genetic material (either DNA or RNA) into the cell. The viral genetic material then takes over the host cell's machinery to produce new viral components, such as viral nucleic acids and proteins.
These components are assembled to form new virus particles. Eventually, the host cell undergoes lysis, where it bursts open, releasing the newly formed viruses. The released viruses can then go on to infect other host cells and continue the lytic cycle.
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A human pancreatic cell obtains oxygen, fuel molecules such as glucose and building materials such as amino acids and cholesterol from its environment and it releases carbon dioxide as a waste product. Based on what you have learned about cellular membrane and structure, describe how such a cell accomplishes these interactions with its environment. -20
The human pancreatic cell accomplishes interactions with its environment through its cellular membrane.
The membrane is composed of a phospholipid bilayer that creates a selectively permeable barrier, allowing certain molecules to pass through while preventing others from doing so.
Small molecules such as oxygen and carbon dioxide diffuse across the membrane through passive transport.
Larger molecules such as glucose, amino acids, and cholesterol are transported across the membrane by facilitated diffusion or active transport, which require the use of transport proteins.
These transport proteins bind to specific molecules and carry them across the membrane to the inside of the cell. This allows the cell to obtain the necessary nutrients and materials while removing waste products.
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Explain how genetic variations helped a species survive from one type of environment to another
Answer:
The reason most species are successful is because of Genetic Variation.
Explanation:
Let's say two species are place into a new environment, they have offspring.
Now lets say the mother, has a certain trait that's beneficial to this new environment. Later comes natural selection, then the offspring with that trait most likely live on to reproduce. Then so on happens throughout generations. Genetic Variation is one of many key factors that help with adaptation.