Proteins and Nucleic Acids Answers

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Which element is found in nucleic acids but not in amino acids?

carbon

hydrogen

nitrogen

phosphorus

Which protein serves as a chemical messenger?

hemoglobin

actin

myosin

insulin

Which pair of statements best describes an essential amino acid?

It is an amino acid that contains peptide bonds. An example is proline.

It is an amino acid that contains nitrogen. An example is aspartic acid.

It is an amino acid that cannot be made by the body. It must be obtained from eating certain foods.

It is an amino acid that can be produced by the body. Vitamin supplements maintain healthy levels.

What effect has breast cancer research had on society?

People who have gene mutations have more treatment options.

People now face an increased risk of breast cancer.

The complete history of breast cancer is now known.

Breast cancer research has no impact outside of a lab.

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