Answer:
This question lacks options, options are:
a) indirect
b) mosaic
c) determinative
d) regulative
e) direct.
The correct answer is d.
Explanation:
The egg (ovum) like the embryo during the first embryonic divisions, do not possess any sign of polarity. This development mechanism can be called regulative development(in contrast to the mosaic model) since the fate of the cells that originate is not fixed and can be modified during development. In regulative embryos, part of the embryo can be removed and the remaining cells can compensate for the loss and give a complete individual as the final product.The strongest evidence that continues to support this regulatory model is based on the plasticity or potential that mammalian cells possess before implantation. It is known that the blastomeres produced by the first divisions can be replaced with each other or even can be eliminated without apparently altering the embryonic development and therefore they are equivalent (without polarity).
Suppose you want to produce a plant cultivar that has red flowers and speckled leaves. You have 2 cultivars, each having 1 of the desired traits. How would you proceed?
In desired traits, by breeding these two types of plants we will get a hybrid plant with the desired traits: red flowers and speckled leaves.
What do you mean by traits?A trait is a specific characteristic of an individual. Traits can be determined by genes, environmental factors or by a combination of both. Traits can be qualitative or quantitative.
Genes carry the information that determines your traits (say: trates), which are features or characteristics that are passed on to you — or inherited — from your parents. Each cell in the human body contains about 25,000 to 35,000 genes.
Biological traits describe species' physiology, morphology, life history, and behavior, capturing both inter-specific interactions and the connections between species and their environment.
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WILL GIVE BRAINLIEST - What has happened to the temperatures since the Ice age?
A. Temperatures have decreased
B. Temperatures have slightly increased
C. Temperatures have increased a large amount
D. Temperatures have not changed at all
Answer:
C
Explanation:
Please mark brainliest
Answer:
b
Explanation:
Its called global warming
When describing DNA replication we say that DNA polymerase synthesizes the new strand in a 5' to 3' direction, moving down the template strand from 3' to 5'. Briefly explain why replication always proceeds in this direction
DNA replication occurs in a 5' to 3' direction because the enzymes used for replication, known as DNA polymerases, can only add nucleotides to the 3' end of an existing strand of DNA.
This is because the 3' end has an exposed hydroxyl (-OH) group which can be used to add to the growing strand of nucleotides. As such, the polymerase moves down the template strand from 3' to 5', adding new nucleotides in the 5' to 3' direction.
This ensures that the newly synthesised strand is complementary to the template strand, as newly added nucleotides are added in the same direction as the original strand.
Additionally, this directional synthesis also means that both strands of the DNA double helix can be synthesised simultaneously, with each strand serving as the template for the other. This ensures that the complete DNA molecule is correctly replicated in the same manner as the original strand.
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Four of the following are major human activities that disrupt and degrade freshwater systems; one is not. Choose the one that is not.
Thickness of the ozone layer id not the one that disrupt and degrade freshwater systems.
The stratosphere, 15–40 km above the earth's surface, may include the ozone layer. Under typical pressure and temperature circumstances, the ozone layer in the stratosphere is between 2 and 5 mm thick, and the amount of ozone present varies by season, hour of the day, and location. Ozone builds up in the polar area due to poor photochemical depletion and ozone transfer from the equator. In the absence of other ozone-disturbing components, the highest ozone values are therefore observed over the Polar regions in winter. Wetlands are often referred to be areas of land that are either permanently saturated with moisture or immersed in shallow water.
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What is Turgor pressure?
A.the pressure a solution puts on cells it contains
B.the pressure put on the cell wall by the cell membrane
C.the pressure put on the nucleus by the cytoplasm
What is the strongest evidence to support the theory of evolution?
Perhaps the strongest fossil evidence for evolution is the continuity of the fossil record from prehistoric to modern times.
The Devonian, the age of the fishes, or human fossils amid dinosaur remains are not things we discover anyplace on Earth. The five assumptions that Darwin combined are evolution, or common descent, gradualism, species diversity, and natural selection. A theory is a reason for how a natural phenomena works that has been put to the test extensively through observations and tests meant to prove the correctness of the explanation. In this situation, evolution may be viewed as a theory as well as reality. It cannot be disputed that throughout Earth's history, living things have changed or evolved.
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Desde hace siglos el cauce de los ríos no se aprovechó con molinos y rotores para aprovechar su fuerza y convertirla en energía mecánica.
Answer:
Falso (este principio es la base de la energía hidráulica la cual ha sido utilizada por siglos)
Explanation:
La energía hidráulica es un tipo de energía obtenida a partir del aprovechamiento de las corrientes de agua. La humanidad ha utilizado desde hace siglos la energía hidráulica producida por la corrientes de aguas de los ríos conectados con pequeña represas a fin de mover molinos y rotores, y así convertir la energía hídrica en energía mecánica, la cual a su vez puede ser utilizada para moler granos de cereales (molinos harineros) y también (más recientemente) para la generación de energía eléctrica. Las centrales hidroeléctricas representan la principal aplicación de la energía hidráulica en la actualidad. Las centrales hidroeléctricas utilizan el mismo principio que estos antiguos molineros harineros para producir energía, aprovechando la energía potencial del cauce del agua y su caída a un nivel inferior del cauce. En el caso de las centrales hidráulicas, el agua que cae se hace pasar por turbinas hidráulicas conectadas a un generador que produce energía eléctrica. La energía hidráulica representa un tipo de energía limpia con un gran potencial de rendimiento energético.
need help asap
question nine
- 20 points
Answer:
population is decreasing
Explanation:
what is binomial nomenclature?
Answer:
In taxonomy, binomial nomenclature ("two-term naming system"), also called binominal nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (which may be shortened to just "binomial"), a binomen, binominal name or a scientific name; more informally it is also called a Latin name.
Answer:
Explanation : the system of nomenclature in which two terms are used to denote a species of living organism, the first one indicating the genus and the second the specific epithet
Explain why the process of cell differentiation occurs.
Answer: Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. Gene expression occurs because of certain signals in your body, both inside and outside of your cells. Cell differentiation occurs during multiple stages of development.
Answer:
this goes by cell size cell shape,membrane potential and metabolic activity. these changes are actually because of modifications in gene expression
Facilitated diffusion allows certain kinds of compounds that are normally blocked by the cell
membrane to cross the cell membrane. All of the following are examples of compounds that
move by facilitated diffusion except
glucose.
sodium
water.
potassium.
Answer:
Potassium
Explanation:
All of the options are compounds, except for potassium which is an element
Facilitated diffusion allows certain kinds of compounds that are normally blocked by the cell membrane to cross the cell membrane is glucose because of its larger size. The diffusion will take place through GLUT transporter.
What is Facilitated diffusion ?Facilitated diffusion is the diffusion which is carried with the help of certain carriers and channels which will act as transporters in order to pass their molecules through the membrane.
Glucose is a large molecule thus even by Facilitated diffusion it will be not easy to pass through the membrane as it will require larger molecules or transporters to carried itself inside the plasma membrane.
GLUT that is the glucose transporter channel which will transport glucose inside the plasma membrane with the help of certain associations and certain binding.
therefore, Facilitated diffusion will not allow glucose because of the larger size as per possibilities.
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ILL GIVE BRAINLIEST JUST TO LET YOU KNOW ASAP
What is the relationship between tissues and organs?
• Scientists find life on Mars that is not made of cells.
• Scientists identify a cell organelle that practices the process of photosynthesis.
• Scientists determine that an organism is living if it is made of twenty structurally-identical cells.
• Scientists gather life from a volcano that is composed of cells which are very different from humans.
Answer:
Tissues and Organs? Cells are the basic building blocks of life, which can join together to form tissues, while different groups of tissues join together to form organs.
Explanation:
Meat tenderizer contain papain, a enzyme that digests proteins. How does this enzyme help in making meat tender?
Meat tenderizer, which is often used in the kitchen to soften tough cuts of meat, contains the enzyme papain. This enzyme is derived from the papaya plant and is able to break down proteins into smaller peptides and amino acids, which helps to make the meat more tender.
When meat is cooked, the proteins in the muscle fibers coagulate, or tighten up, which can make the meat tough and difficult to chew. Papain works by breaking down the proteins in the meat, which makes it easier to chew and swallow. It breaks down the bonds between the protein molecules, making them smaller and less resistant to chewing.
Papain works by cleaving peptide bonds in the meat proteins, particularly the tough, fibrous proteins such as myosin and actin. It works best at a pH of 6-7, and at moderate temperature around 40-50 Celsius. Papain can also work on breaking down connective tissues such as collagen and elastin, in the meat which are usually tough, making the meat more tender.
The amount of time that papain needs to break down the proteins depends on the pH and temperature, but also on the meat's own properties such as the age, the species and the cut. Papain is most effective when used for a period of time before cooking, allowing the enzyme to break down the proteins over a longer period of time. When papain is used for too short a time or at high temperature, it can cause the meat to become mushy.
In summary, papain is an enzyme that helps make meat more tender by breaking down the proteins in the meat, which makes it easier to chew and swallow. Papain also helps in breaking down the connective tissues in meat making it more tender. However, it is important to use meat tenderizer in the right way to get the desired result and not to overuse it which will cause the meat to become mushy.
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Select all that apply.
Animals return water to the atmosphere through:
perspiration
respiration
evaporation
transpiration
elimination
Answer:
Respiration
Explanation:
Respiration process in animal release water vapour as we breathe out
Answer:
Elimination
Perspiration
Respiration
Explanation:
Sorry this is late but it's right.
Why are landfill liners NOT a reliable safeguard against aquifer contamination?
Because its dirty not good for a realiable safegurd and its against aquifer contamination everyday
How do the wavelength and frequency of the colors change as you move through the rainbow?
Answer:
he more energy is used for one photon, the smaller the wavelength of light. Since frequency is inversely proportional to wavelength you can also say: The more energy is used for one photon, the higher the frequency of light.
Explanation:
Answer:
As you move through the rain bow, wavelength reduces as frequency increases from red to violet.
Como concientizar a las personas sobre la manera de usar el agua correctamente?
10 maneras please es un examen :(
Answer:
1.Tomar una ducha
2.Beberlo
3.Nada en él
4 juega con él
5.Ruin tecnología con ella
6.crecer plantas
Lo siento, eso es todo lo que realmente sé.
No sé mucho español, así que ... esto es difícil de escribir.
Espero que esto ayude por favor y mentalmente :D
Am I correct or no because I really don't know and I'm trying to pass this test so someone plssss help.
Lines that connects to points to elevation is called contour lines option - c is correct.
What do points of elevation have in common with lines?Shape lines: A map's contour lines are drawn by connecting points of equal elevation in order to calculate elevations (elevation refers to height in feet, or meters, above sea level).
The same elevation is shared between points connected by contour lines; where they are close together (they never intersect), the terrain is steep and the elevation changes quickly over a short distance.
Utilizing contour lines is the most typical way to depict the topography of a specific area. Any fictitious line that connects elevation-equalizing points is called a contour.
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Which is an example of a stable ecosystem?
a crop of potatoes
a field of red tulips
a rain forest
all of the above
19. Discuss Choose one of the hypotheses about
the function of the shark's head shape. Describe
how a scientist might design an experiment to
test the hypothesis,
Answer:
This unique head shape has been termed the cephalofoil in recognition of its wing-like appearance. ... Some suggest the cephalofoil acts like a canard to provide hydrodynamic lift and increase maneuvering capabilities. Another hypothesis is that the cephalofoil functions in prey manipulation.
Explanation:
Your teammate is spinning a tennis ball on a string in a perfect circle. If the radius of the circle is 45 cm and the ball travels half the
circumference of the circle in 15 seconds, what is the velocity of the ball rounded to the nearest whole number?
A
3 m/s
B)
30 cm/s
94 cm/s
D)
212 cm/s
Answer:
94 cm/s
Explanation:
The velocity of an object in circular motion is the distance traveled over time. The distance traveled is the circumference. Half the circumference of a circle with radius r is πr. The velocity is this distance over time, in this case, 1.5 s. The ball’s velocity is therefore
πr
t
=
45π
0.5
≈ 94.2 cm/s
List 2 positive consequence of natural resource use/consumption
Answer:
In short, raw material extraction and processing always impact on the environment, resulting as they do in soil degradation, water shortages, biodiversity loss, damage to ecosystem functions and global warming exacerbation
Explanation:
Production is the creation, consumption is the use or destruction of resources and fuels
Two balloons are rubbed with fur, which creates an excess of electrons on the balloons. If the balloons are hung from flexible wires from a shared point overhead, what will happen to the balloons?
A.
They will repel one another and the angle between them will be proportional to the charge on each.
B.
They will attract one another and sustain that attraction until the charges have redistributed.
C.
They will swing like a pendulum, with the period based on the magnitude of the transferred charge.
D.
They will join at a single point where the excess charge has collected and then they will repel one another.
__________ are chemicals that enhance urinary output. nitrogenous wastes countercurrent exchangers diuretics countercurrent multipliers
A) secretagogues B) countercurrent multipliers C) countercurrent exchangers D) diuretics.
Diuretics are chemicals that enhance urinary output. nitrogenous wastes countercurrent exchangers diuretics countercurrent multipliers.
Diuretics, sometimes water pills and Removes salt (sodium) and water from the body called Most of these drugs help the kidneys release more sodium into the urine. Sodium aids in the removal of water from the blood, therefore decreasing the quantity of fluid moving through your veins and arteries.
The nitrogenous waste products excreted by the kidneys are urea and ammonia. Diuretics increase urine output from the kidneys (that is, they promote diuresis). It does this by changing the way your kidneys use sodium. As the kidneys excrete more sodium, they also excrete more water.Diuretics make you pee more often, so take them preferably in the morning.
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explain the cause of imperialism. make sure to discuss all 3 of the c and describe why they were cause of imperialism
Among industrialized nations, economic competitiveness. Competition on the political and military fronts, especially the development of a powerful navy.
What is imperialism?A conviction that those of Anglo-Saxon ancestry are better on both a genetic and cultural level.
The rise of imperial authority and patriotism were the political causes of imperialism. They sought to exert as much power over the world as they could. The size of the country increased with the number of colonies.
Therefore, they searched for key areas where their ships and armies could have access from anywhere in the world.
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Which of the following matches enzyme components with their correct definition and/or function? a. Apoenzymes are the non-protein component of an enzyme. b. Apoenzymes are typically inorganic molecules, such as iron, zinc, or magnesium. song c. Coenzymes are organic cofactors important to enzyme activity. d. Cofactors are the protein components of enzymes.
c. Coenzymes are organic cofactors important to enzyme activity.
Enzymes are complex proteins that catalyze chemical reactions in the body. Enzyme activity can be influenced by other molecules, such as cofactors and coenzymes. Cofactors are non-protein molecules that bind to enzymes and can be either inorganic or organic.
Apoenzymes are the protein component of an enzyme, while coenzymes are organic molecules that bind to the enzyme temporarily and are necessary for the enzyme to function properly.
Coenzymes are organic cofactors important to enzyme activity while it's not typical that apoenzymes are typically inorganic molecules, such as iron, zinc, or magnesium, some enzymes do require metal ions as cofactors.
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Use this graphic to answer the question.
An environmentalist uses a bar graph, a diagram, and a map as part of a presentation to Congress about global
warming.
Based on the process outlined in the diagram, what has most likely caused the higher levels of global surface
temperature since the 1980s, as shown in the bar chart?
O decreased ocean temperatures
O increased levels of greenhouse gases
O decreased solar and mermal radiation
O increased global surface temperatures
The various greenhouse gases' varying contributions to global warming are as follows: planting trees can reduce CO2 by 60%. More carbon dioxide is removed from the atmosphere by trees than is released.
What effects of global warming have you personally noticed? How has it influenced the planet thus far?Storms, heat waves, floods, and droughts are just a few of the disasters that are getting worse as a result of rising temperatures. Warmer temperatures produce an atmosphere that can hold onto, release, and gather more water. This alters weather patterns such that wet areas get wetter and dry ones to get drier.
How are climate change and global warming-related?The heat from the sun gets trapped on Earth as a result of greenhouse gas production. Global warming and climate change result from this. The rate of global warming is presently higher than it has ever been. Weather patterns are shifting as a result of warming temperatures, which is also upsetting the natural order.
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Which of the following are benefits of biodiversity within ecosystems? Choose all correct answers.
Ecosystems with higher biodiversity have less human threats.
Ecosystems with higher biodiversity are better protected from pollution.
Ecosystems with higher biodiversity are more likely to recover from environmental stressors.
Ecosystems with higher biodiversity can better protect against coastal flooding.
The benefit of biodiversity within ecosystems is ecosystems with higher biodiversity are more likely to recover from environmental stressors. The correct option is c.
What is an ecosystem?An ecosystem is a region where a bubble of life is created by plants, animals, and other organisms interacting with the weather, environment, and other factors. Abiotic variables, or nonliving components, coexist with biotic components in ecosystems.
Environmental stressors are things that can prevent ecosystems from developing or limit the productivity and reproduction of species. Fishing will be impacted by climate change, which will have an impact on many species and habitats.
Therefore, the correct option is c. Ecosystems with higher biodiversity are more likely to recover from environmental stressors.
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What should be done first in neonatal resuscitation?
In neonatal resuscitation firstly the newborn should be placed under a radiant heat source to offer warmth.
The baby should then be dried off, their airway should be cleared with a bulb syringe or suction catheter if necessary, and their breathing should be stimulated.
Clear the airway by suctioning the mouth first, followed by the nose, with a bulb syringe or suction catheter if the baby is energetic at birth (strong respiratory effort, such as crying, good muscular tone, heart rate > 100 bpm). If bradycardia develops when sucking, cease sucking and reassess the heart rate. Suctioning for intubation is not necessary.
The newborn needs tracheal suctioning if they are not active (decreased breathing, depressed muscle tone, and heart rate 100 bpm). Using a laryngoscope and a suction catheter under direct eyesight, first clean the mouth and posterior pharynx before inserting the endotracheal tube into the trachea. Connect an apparatus for suction to the endotracheal tube. As the tube is gently withdrawn, use suction. Repeat as necessary until the meconium is recovered or the heart rate drops down below 60 beats per minute, at which point immediate resuscitation is required. Give a soft yet forceful stimulation; touch the back and softly flick the soles.
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Question 4
What level of organization contains ALL other levels or organization for an entire region of earth?
A Biosphere
10
B Population
C Community
D) Population
Answer:
A) Biosphere
Explanation:
The biosphere is made up of the parts of Earth where life exists. The biosphere extends from the deepest root systems of trees to the dark environment of ocean trenches, to lush rain forests and high mountaintops.