PROTEINS

A protein is:

• A. Polymer

• B. macromolecule

• C. Biomolecule

• D. Organic molecule

• E. All of the above

The monomer of proteins:

• A. Monosaccharide

• B. Fatty acid

• C. Nucleic Acid

• D. Amino acid

• E. none of the above

Every protein:

• A,. Has a unique 3-d shape that corresponds to a specific function

• B. Has similar shape

• C. Has a different shape but not 3-D

• D. . Has a unique 3-d shape unrelated to function

Proteins are important to:

• A. Structure of cell

• B. Carrying activities

• C. Energy source

• D. Insulation

• E. Both A and B

All are major classes of proteins EXCEPT:

• A. structural G. Enzymes

• B. defense H. Signal

• C. Contractile

• D. Transport

• E. storage

• F. Energy

Proteins are made by linking:

• A. Nucleic acids together

• B. Amino acids together

• C. Fatty acids together

• D. Monosaccharides together

There are ____ amino acids

• A. 10

• B. 15

• C. 20

• D. 25

• E. 30

All amino acids have a central carbon

• A. true

• B. False

All amino acids have a carboxyl group

• A. true

• B. False

All amino acids have an amino group

• A. true

• B. False

All amino acids have a

hydrogen attached to central

carbon:• A. true

• B. False

Every amino acid has a different R

group attached to central

carbon• A. true

• B. False

What determines properties of amino

acids?

• A. Carboxyl group

• B. Amino group

• C. Central carbon

• D. Hydrogen

• E. R-group

Amino acids are linked together:

• A. By process of dehydration synthesis

• B. By removal of water

• C. By covalent bonds

• D. By peptide bonds

• E. All of the above

Chain of amino acids called:

• A. Monosaccharide

• B. polysaccharide

• C. Polypeptide

• D. Triglyceride

• E. Dipeptide

What determines a proteins function?

• A. Its shape

• B. Zack

• C. Sam

• D. Bryan

• E. B, C, and D are correct

Denaturation

• A. The linking together of amino acids

• B. The breaking apart of amino acids

• C. The unfolding of a protein

• D. The breaking apart of a polysaccharide

Denaturation is caused by all

EXCEPT:• A. High temperature

• B. low temperature

• C. High pH

• D. Low PH

• E. Salt concentrations

Since all organisms use the same 20 amino

acids to make their proteins

• A. Evidence for Cell Theory

• B. Evidence For Evolution

• C. Evidence from common ancestry

• D. Evidence of relatedness among species

• E. B, C, and D