Answer:
Vertebrates have a skeletal structure with a spinal column or backbone. Invertebrates have no backbone, while vertebrates have a well-developed internal skeleton of cartilage and bone and a highly developed brain that is enclosed by a skull. ... Due to lack of a supportive system, a majority of invertebrates are small.
Explanation:
Explain briefly what is the branch of biologuy and the role
Answer:
Biology is a branch of science that deals with living organisms and their vital processes.
Explanation:
hope this helps
Describe the process of spermatogensis
I dont understand what it means. Please help, and if you can give some examples on what im supposed to do that will be great :)
According to the information, we have to draw two branches from Cephalopoda to classificate new orders. Also, we have to draw one branch from each order to mention their common names.
How to organizate the information?
To organizate the information in a good way, we have to identify the brach of Mollusks and then, we have to understand how is the organization of each classification.
We have to follow the instructions, so we have to draw three branches from Mollusks to classificate Cephalopoda, Gastropoda and Bivalve. Once we did that, we must to draw two branches from Cephalopoda to classificate new orders (Octopoda and Teuthida). Finally, we have to draw one branch from each one to mention their common names.
Note: This question is incomplete because there is some information missing. Here is the complete information.
Graph attached
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Ozone layer removed how would it effect temp
Answer:
lower temperatures
Explanation:
Ozone generates heat in the stratosphere, both by absorbing the sun's ultraviolet radiation and by absorbing upwelling infrared radiation from the lower atmosphere (troposphere). Consequently, decreased ozone in the stratosphere results in lower temperatures.
Hope this helps!
[0.01]Ethan began making a model to show the processes which resulted in the formation of oceans.
Sea floor
spreading
Earth's
plates meet
?
Which of the following would be the next step in the process?
Crust is broken down
Earth's crust moves
O Earth's plates meet
O sea floor spreading
20 Points plz help
Which statement best compares pioneer species with climax communities?
A. Both are involved with stages of succession, but climax communities are the beginning and pioneer species are the end result.
B. Both are involved with stages of succession, but pioneer species are the beginning and climax communities are the end result.
C. The appearance of each indicates that the number of species in the area is increasing.
D. The appearance of each indicates that the number of species in the area is decreasing.
Answer:
B. Both are involved with stages of succession, but pioneer species are the beginning and climax communities are the end result.
Explanation:
I Just took the quiz
Hope this helps! <333
༼ つ ◕_◕ ༽つ
Do the patterns of interactions between organisms, such as competition and predation, change when they occur in different ecosystems
Yes, there is change when they occur in different ecosystems because each ecosystem contains a different set of abiotic and biotic features that interact with each other.
What is competition?Competition is defined as the struggle for survival that exists between two similar organisms in an ecosystem where one who gains survives and the one that loses dies.
Predation is defined as the feeding interaction that exist between organisms whereby the one organism, the predator, kills and eats another organism, its prey.
The patterns of interaction between organisms such as competition and predation would change because each ecosystem contains a different set of abiotic and biotic features that interact with each other.
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What do you think happens to a wave’s energy below the surface?
Answer:
wave power is greater
Explanation:
deep water waves meaning that the depth of the water is greater the wave length
Ms. King's class is planning an experiment to find out the average number of sunny days per week this October for their city.
How do Demetri's results show that digestive enzymes are crucial to maintaining homeostasis in the body?
In addition to breaking down food so that the nutrients may be absorbed, enzymes also generate vitamins like biotin and vitamin K and protect the body from dangerous microorganisms.
What is homeostasis?
Biological system's ability to self-regulate and maintain stability while responding to shifting environmental factors is known as homeostasis.
The body needs a steady supply of nutrients from food that has been digested. They are crucial for maintaining health and carrying out bodily tasks. The body may absorb and use food that has been broken down by the digestive system.
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Why is reaction rate important for biological organisms
Answer:
Explanation:
The rate of a reaction is a powerful diagnostic tool. By finding out how fast products are made and what causes reactions to slow down we can develop methods to improve production.
Reaction rates are important for biological organisms in order to maintain the proper functioning of organisms' bodies and sustain life generally.
Life in biological organisms is sustained by several interdependent metabolic processes. Each metabolic process consists of reactions whose rates are carefully controlled so as to maintain certain physiological conditions of organisms.
The maintenance of relatively constant internal processes in organisms is what is called homeostasis. If reaction rates exceed or fall below normal, internal physiological processes may become disrupted and this may spell doom for the organism.
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"Enzymes are like scissors , cutting up food to get absorbed into the body"
The test tube that contained cream+ lipase+ bile contains all components necessary for optimum fat digestion.
What are fats?Fats are lipid molecules of animal origin which usually are on solid form.
Fats are hydrophobic and serve as large energy stores in the body of animals.
The enzymes involved in fat digestion are known as lipases.
During fat digestion, They are first emulisified by bile before action by lipases.
Cream contains fats and are first emulsified before action by lipases.
Therefore, the test tube that contained all components necessary for optimum fat digestion is the one that contains cream+ lipase+ bile.
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Answer:
The test tube that contained cream+ lipase+ bile contains all components necessary for optimum fat digestion.
Explanation:
I am pretty sure i am sorry if i am wrong
What causes mutation in gene?
Answer: . A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses
Explanation:
Based on the discussion in your text, which of the following strategies would effectively
reduce prejudice between groups?
Does anyone know this question!?
Answer:
B. Analogous structure
Explanation:
The wings of a bat and a butterfly perform similar function. They are believe to have evolved differently from different ancestors, however, they perform the same function.
Such structures are referred to as Analogous structures.
Analogous structure like the wing of butterfly and bat appear similar and perform similar function. They have evolved separately to become adapted to perform similar function.
What converts sound waves to electrical impulses in the nervous system?
Oval window
Pinna
Cochlea
Tympanic membrane
Where are the organs associated with balance located?
The brain
The heart
The ear
The stomach
What type of muscle typically forms a lining for various organs?
Rough muscle
Smooth muscle
Cardiac muscle
Skeletal muscle
What are the body's two systems of internal communication?
Digestive and Endocrine systems
Nervous and Respiratory system
Respiratory and Endocrine systems
Endocrine and Nervous systems
Answer:
2.the inner ear 3. the smooth muscle and the skeleton muscle.
The diagram shows a food web.What is most likely to happen if the snake population is wiped out?
A.The mouse population will decrease.
B.The plant population will increase.
C.The fox population will increase.
D.The hawk population will decrease
The diagram shows a food web. The snake population is wiped out is the hawk population will decrease. Therefore, option (D) is correct.
What do you mean by food web?A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.
The fundamental purpose of food webs is to describe feeding relationship among species in a community. Food webs can be constructed to describe the species interactions.
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Situational context is the social and environmental setting in which a particular behavior takes place.
Please select the best answer from the choices provided
•True
•False
Answer:
True
Explanation:
What is the most important part of the cell after the Nucleus?
I think its the cell membrane.
Are individuals with a variation of this trait more successful at reproducing than others?
Answer:
There is no picture shown, however, if the variation benefits the organism and helps them strive then the answer would be yes.
If a person lives at high altitudes for an extended period of time, other body responses occur. One response is an increase in the number of red blood cells.
C. Explain how this response is helpful to the body.
At high altitudes, air temperature is also generally colder than at sea level.
D. Describe and explain one internal body response that occurs when a person has been outside long enough for his core temperature to drop.
Answer:
When a person has been outside long enough for their core temperature to drop, their body will respond by shivering. Shivering is an involuntary muscle movement that helps to generate heat and raise the core body temperature back to a normal level. This is an important response as it helps to protect the body from hypothermia, a dangerous condition in which the body's core temperature is too low.
Explanation:
As with all multicellular organisms, homeotic genes in plants control morphogenesis (how the tissues and organs of the plant are arranged). in maize plants, the homeotic gene knotted1 (abbreviated kn1) maintain the indeterminate state of shoot apical meristems. in wild-type maize plants, kn1 is expressed at high levels in the shoot apical meristem, but is expressed at low levels in leaves. in some mutant maize plants, kn1 is expressed at high levels in leaves. in those plants, outgrowths or knots of adventitious shoot meristems (shoot meristems that appear in abnormal locations on the leaves) form. use this information to determine which of the following statements are true. select the four statements that are true.
a. expression of the kn1 gene in shoot apical meristem cells produces a protein involved in the maintenance of shoot apical meristems.
b. in wild-type maize plants, the kn1 gene is mostly expressed in shoot apical meristem cells.
c. in mutant maize leaves, the kn1 gene is mostly not expressed.
d. leaves of the mutant maize plants produce more kn1 protein than leaves of wild-type maize plants.
e. both the wild-type and mutant maize leaves have the same morphology.
f. in wild-type maize plants, the kn1 gene is present in shoot apical meristem cells, but not in leaf cells.
g. in wild-type maize plants, the kn1 gene is expressed diferentially in shoot apical meristem cels and leaf cells.
Answer:
a. True
b. True
c. False
d. True
e. False
f. False
g. True
Explanation:
The homeotic genes refer to evolutionarily conserved genes that modulate the development of different structures in organisms of the same groups (in this case, plants). Moreover, homeobox genes are genes that encode transcription factors involved in the regulation of development in eukaryotic organisms. The knotted1 (kn1) gene is a plant homeobox gene is a member of the kn1 homeobox (knox) gene family, which is responsible for maintaining indeterminacy and preventing cellular differentiation. In maize, kn1 plays a key role in maintaining the cells of the shoot apical meristem in an undifferentiated state, being mainly expressed in shoot meristems during postembryonic stages of shoot development. It has been observed that maize mutant plants where kn1 is ectopically expressed (i.e., in tissues in which this gene is not normally expressed) exhibit proximal-distal patterning defects.
Bunnies: Black fur is dominant to white fur. Use the letter “B” and “b” to answer the following questions.
6. Complete the punnet square to show the possible offspring of a true-breeding black rabbit and a true-breeding white rabbit. (true breeding parents are homozygous, know this for the test!)
7. What ratio would you see in the F1 genotypes?
8. What ratio would you see in the F1 phenotypes?
9. If you crossed two of these offspring, what would this generation be called?
10. Cross two offspring from the F1 generation. (Complete your Punnett square on scratch paper)
a. genotypes:
b. phenotypes:
Answer:
they are all 100% heterogenous ,,their genotype is Bb,, their prototype is black fur
Explanation:
look at my demonstration
What is species evenness?
a. The distribution of species throughout a habitat
b. The number of different populations in a community
c. The relative abundance of species in a community
The relative abundance of species in a community is known as species evenness. Therefore, option C is correct.
What is species evenness?Species evenness refers to the measure of the relative abundance of different species within a community or ecosystem. It describes the balance of the distribution of individuals among the different species present in a particular area.
For example, a community with high species evenness would have similar numbers of individuals in each species, while a community with low species evenness would have a few dominant species with many individuals and many less abundant species with fewer individuals.
Species evenness is often used in conjunction with species richness, which refers to the total number of different species present in a community, to provide a more complete picture of the biodiversity of an area. Thus, option C is correct.
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The difference in the chromosome arrangement during meiosis in the metaphase plate can lead to greater genetic diversity in a population. Explain your answer
Answer:
independent assortment
Explanation:
The independent assortment of chromosomes refers to the process by which pairs of homologous chromosomes are randomly separated during meiosis. In metaphase I, pairs of homologous chromosomes line up along the center of the cell at the metaphase plate, and subsequently segregate at anaphase I. For example, in humans, there are 8,324,608 different gametic combinations that can result from meiosis (i.e., 23 chromosome pairs >> 2²³ = 8,324, 608 gametic combinations). In consequence, it is almost impossible that two gametes have the same combination of chromosomes after meiosis, thereby this process increases the genetic variation in the population.
What reproduces by binary fission?
A. mammals
B. reptiles
C. fish
D. bacteria
1. Which image shows a virus that can infect
the human body?
Answer: c
Explanation:
a is mitochondria which is part of the cell
b is the cell itself
c is the virus
d is a nerve
Among dogs, short hair is dominant to long hair and dark coat color is dominant to white (albino) coat color. Assume that these two coat traits are caused by independently segregating gene pairs. For each of the crosses given below, write the most probable genotype (or genotypes if more than one answer is possible) for the parents. It is important that you select a realistic symbol set and define each symbol below.
Parental Phenotypes Phenotypes of Offspring
Short Long Short Long
Dark Dark Albino Albino
(a) dark, short × dark, long 26 24 0 0
(b) albino, short × albino, short 0 0 102 33
(c) dark, short × albino, short 16 0 16 0
(d) dark, short × dark, short 175 67 61 21
Assume that for cross (d), you were interested in determining whether fur color follows a 3:1 ratio. Set up (but do not complete the calculations) a Chi-square test for these data [fur color in cross (d)].
Complete question:
Among dogs, short hair is dominant to long hair and dark coat color is dominant to white (albino) coat color. Assume that these two coat traits are caused by independently segregating gene pairs. For each of the crosses given below, write the most probable genotype (or genotypes if more than one answer is possible) for the parents. It is important that you select a realistic symbol set and define each symbol below.
Parental Phenotypes Phenotypes of Offspring
Short Long Short Long
Dark Dark Albino Albino
(a) dark, short × dark, long 26 24 0 0
(b) albino, short × albino, short 0 0 102 33
(c) dark, short × albino, short 16 0 16 0
(d) dark, short × dark, short 175 67 61 21
Assume that for cross (d), you were interested in determining whether fur color follows a 3:1 ratio. Set up (but do not complete the calculations) a Chi-square test for these data [fur color in cross (d)].
Answer:
(a) DDSs x DDss
DDSs x Ddss
(b) ddSs x ddSs
(c) ddSS x DdSS
ddSs x DdSS
ddSS x DdSs
(d) DdSs x DdSs
-------------------------------------------
Chi square = X² = ∑ ((O-E)²/E) = ((242 - 243)² / 243) + ((82 - 81)² /81) = 0.0164
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Which of the following is a homeostatic response when the human body is fighting an infection?
Select one:
Negative feedback producing more antibodies in the blood.
Positive feedback releasing more enzymes into the blood.
Negative feedback increasing body temperature.
Positive feedback increasing heart rate.
Explanation:
The immune response contributes to homeostasis by helping to fight off infection and heal after infection or trauma. During an infection, molecules called pyrogens are released, which alert the brain to increase the temperature of the body, causing a fever
The homeostatic response when the human body is fighting an infection is negative feedback, increasing body temperature; that is the third option, as increasing body temperature helps to inhibit the growth and replication of pathogens and also enhances the immune response.
What is homeostasis in a fever?When the body is fighting an infection, it triggers a complex set of responses to try to restore homeostasis and overcome the infection. One of these responses is the activation of the immune system, which produces various cells and molecules to fight off the invading pathogens.
One of the most important homeostatic responses during an infection is the increase in body temperature, which is known as fever. The body's thermostat, which is located in the hypothalamus of the brain, is set to a normal temperature of around 37°C (98 °F). However, during an infection, the body may raise its temperature to 38°C (100.4°F) or higher.
Hence, the homeostatic response when the human body is fighting an infection is negative feedback, increasing body temperature; that is the third option.
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The technology in the picture produces which energy conversion?
Quo
27
O A. Chemical energy to kinetic energy
O B. Kinetic energy to electrical energy
C. Thermal energy to kinetic energy
D. Light energy to electrical energy
Answer: B. Kinetic energy to electrical energy
Explanation:
The picture above depicts a hydro-electric power station where flowing water is used to generate electricity. It works by directing water to push against turbines which then turn and generate electricity through a generator connected to the turbines.
It is therefore converting the kinetic (motion) energy of the water to electrical energy that is generated by the generator.