BIOLOGY HIGH SCHOOL

Which is the role of restriction enzyme.

Answers

Answer 1
Answer: The role of a restriction enzyme is essentially used to cut a single gene from a larger piece of DNA. It has a very important role to play in experiments investigating cloning, and in the construction of particular DNA molecules.
Answer 2
Answer:

Answer:

B. to cut DNA into fragments of different lengths

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An anthropologist discovers the fossilized heart of an extinct animal. The evidence indicates that the organism's heart was large, well-formed, and had four chambers, with no connection between the right and left sides. A reasonable conclusion supported by these observations is that the animal wasA) most closely related to mammals.B) most closely related to fish.C) most closely related to reptiles.D) most closely realted to athropods and molluscs. E) most closely related to amphibians.

Answers

Answer:

Option A, most closely related to mammals

Explanation:

Insects like arthropods and molluscs have an open circulatory system and thus do have a distinguishable heart. Fish has two chambered heart. Reptiles have three chambered heart. Amphibians too have a three chambered heart.  

All mammals and fish have four chambered heart. The right and left sides of the chambers have restricted entry and hence remain intact from each other

Hence, option A is correct

 

Which function of the muscular system is best illustrated by the heart pumping blood throughout the body?

Answers

Contraction and relaxation of the heart is the function of the muscular system whereby illustrated by the pumping of the blood by the heart throughout the body. Though everyone is not aware, the constant contraction and relaxation of the muscles help fight gravity, that is why the muscular system is a great help in maintaining good posture.

Answer:

Contraction and relaxation of the heart is the function of the muscular system whereby illustrated by the pumping of the blood by the heart throughout the body. Though everyone is not aware, the constant contraction and relaxation of the muscles help fight gravity, that is why the muscular system is a great help in maintaining good posture.

The place where a neuron transfers an impulse to another cell or neuron is thea. dendrite.
b. synapse.
c. receptor.
d. myelin sheath.

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The place where a neuron transfers an impulse to another cell or neuron is the Synapse
That place is known as synapse. Hope it helped you. If it helped please mark as brainliest answer

What five concepts must a child grasp in order to fully understand death?

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Answer: A child must be taught from childhood about life and death both so that he should be aware of the fact that everything that has life has to die one day.

Explanation:

1. Permanence: Once a living died it cannot be returned back into life.

2. Inevitability: All the living things dies eventually. Nothing can deny this rule of life that all the living things die one day.

3.Cessation: All the living things have certain functions, has feelings, have thought, has many bodily processes that cease at death.

4.Applicability: Death is applicable to all the living things.

5. Causation: Death is caused by stopping of normal processes of body.

Isotopes of the same element differ in their ___?

Answers

contain equal numbers of protons but different numbers of neutrons in their nuclei

How are mitosis and meiosis different from each other? A. Mitosis produces four different cells and meiosis produces identical cells. B. Mitosis produces four daughter cells and meiosis produces two daughter cells. C. Mitosis produces sperm and egg cells and meiosis produces cells for the organism to grow and repair itself. D. Meiosis produces gametes and mitosis produces cells for the organism to grow and repair itself.

Answers

D) Meiosis produces gametes and mitosis produces cells for the organism to grow and repair itself.
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