dna test
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questions
10. why is dna important? *
your answer
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11. why is it so important that dna copies itself correctly?
your answer
12. describe 2 specific jobs that proteins do in your body or in your cells. *

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Accepted Answer

### Question 10: Why is DNA important?
# Brief Explanations:
DNA (deoxyribonucleic acid) is important because it contains the genetic instructions necessary for the development, functioning, growth, and reproduction of all known living organisms and many viruses. It acts as the blueprint for an organism's traits, controlling processes like protein synthesis, cell division, and the inheritance of characteristics from one generation to the next.
# Answer:
DNA is important as it holds genetic instructions for the development, function, growth, and reproduction of organisms. It serves as the blueprint for traits, controls protein synthesis, cell division, and hereditary transmission.

### Question 11: Why is it so important that DNA copies itself correctly?
# Brief Explanations:
Correct DNA replication is vital because errors (mutations) can lead to changes in the genetic code. These changes may disrupt normal cellular functions, cause genetic disorders, or affect an organism's ability to survive and reproduce. Accurate replication ensures that daughter cells receive an identical set of genetic information, maintaining the stability of the genome and the proper functioning of the organism.
# Answer:
Correct DNA replication is crucial to avoid mutations that could disrupt cellular functions, cause genetic disorders, or impair survival/reproduction. It ensures daughter cells get identical genetic info, maintaining genomic stability and proper organism function.

### Question 12: Describe 2 specific jobs that proteins do in your body or in your cells.
# Brief Explanations:
1. **Enzymatic Activity**: Proteins called enzymes (e.g., amylase, catalase) speed up chemical reactions in the body. For example, amylase helps break down carbohydrates in food during digestion, while catalase breaks down hydrogen peroxide (a toxic byproduct of metabolism) into water and oxygen to protect cells.
2. **Structural Support**: Proteins like collagen (in skin, bones, tendons) and keratin (in hair, nails, skin) provide structural integrity. Collagen gives strength and elasticity to connective tissues, while keratin forms a tough, protective layer in hair and nails.
# Answer:
1. Enzymatic Activity: Enzymes (e.g., amylase, catalase) speed up chemical reactions (e.g., amylase digests carbs, catalase breaks down toxic hydrogen peroxide).
2. Structural Support: Proteins like collagen (strengthens connective tissues) and keratin (forms tough layers in hair/nails) provide structural integrity.

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Explanation:

Question 10: Why is DNA important?

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Question 11: Why is it so important that DNA copies itself correctly?