Proteins and Nucleic Acids — Quiz

Question 1

Which component makes each amino acid unique?

Revolt · Accepted Answer

R group

Question 2

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

Revolt · Accepted Answer

phosphorus

Question 3

Who discovered the monomers of nucleic acids?

Revolt · Accepted Answer

Phoebus Levene

Question 4

DNA and RNA share a number of similarities, but they also differ in certain aspects of their structure. Which nitrogenous base is found in RNA but is not found in DNA?

Revolt · Accepted Answer

uracil

Question 5

How many amino acids must be obtained in the diet because they cannot be made by the body?

Revolt · Accepted Answer

10

Question 6

How many amino acids are found in living organisms?

Revolt · Accepted Answer

20

Question 7

Which three components are common to all amino acids?

Revolt · Accepted Answer

an amino group, a carboxyl group, and an R group

Question 8

Which pair of statements best describes an essential amino acid?

Revolt · Accepted Answer

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

Question 9

Which statement best distinguishes plants and animals as they relate to amino acids?

Revolt · Accepted Answer

Plants can synthesize all twenty amino acids. Humans must eat plants or animals to obtain some of these amino acids.

Question 10

Who first identified nucleic acids, and where were they discovered?

Revolt · Accepted Answer

Friedrich Meischer discovered nucleic acids in blood cells.

Proteins and Nucleic Acids — Quiz Answers

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