Deck 21: Biochemistry

Question 1

Which statement is false with respect to proteins?

A) Primary structure refers to the sequence of nucleotides.
B) Secondary structure includes alpha-helixes.
C) Tertiary structure includes disulfide bonds.
D) The overall shape of a protein is related to its tertiary structure.
E) All are false.

Answer 1

Primary structure refers to the sequence of nucleotides.

Question 2

Fibrous proteins provide structural integrity and strength for many types of tissue and are the main components of muscle, hair, and cartilage.

Answer 2

True

Question 3

The primary structure of proteins is

A) the pleated sheet
B) the peptide linkage
C) the alpha-helix
D) the order of amino acids
E) none of these

Answer 3

the order of amino acids

Question 4

Starch is the major structural component of woody plants.

Question 5

DNA and RNA are polymers that are composed of smaller units called ____________.

Question 6

The primary structure of a protein refers to which amino acids are present in the protein.

Question 7

The process of breaking down the three-dimensional structure of a protein is called

A) degradation
B) denaturation
C) decomposition
D) fission
E) none of these

Question 8

Give one type of secondary protein structure.

Question 9

The tertiary structure of a protein refers to the number of carbons that are bound to the alpha-carbon of the first amino acid.

Question 10

Denaturation of a protein means it is broken into its component amino acids.

Question 11

Which type of proteins transport and store oxygen and nutrients and fight invasion of the body by foreign objects?

A) fibrous
B) globular
C) monosaccharide
D) cellulose
E) phospholipid

Question 12

The condensation product of two amino acids is a(n)

A) peptide
B) ketone
C) ether
D) ester
E) alcohol

Question 13

The analysis of a protein for its amino acid content is valuable in determining the protein's

A) tertiary structure
B) secondary structure
C) quaternary structure
D) primary structure

Question 14

Which of the following is not a function of proteins?

A) structure
B) catalysis
C) oxygen transport
D) energy transformation
E) All of these are functions of proteins.

Question 15

Starch and cellulose are both polymers of glucose.

Question 16

Simple sugars are more precisely called _____________.

Question 17

An example of a secondary structure of a protein is

A) an alpha amino acid
B) a peptide linkage
C) a pleated sheet
D) serine
E) none of these

Question 18

Which of the following is not considered a lipid?

A) wax
B) steroid
C) cholesterol
D) cellulose
E) phospholipid

Question 19

DNA is a substance that stores and transmits genetic information.

Question 20

____________ are similar in structure to fats in that they are esters of glycerol; however, they contain only two fatty acids.

A) Phospholipids
B) Saponifications
C) Micelles
D) Glycoside linkages
E) Enzymes

Question 21

What sugar is contained in RNA?

Question 22

Name the three main generic components of DNA.