BSC - 1025C 7.) Proteins Exam Questions and Correct Answers

BSC - 1025C 7.) Proteins Exam Questions and

Correct Answers

Proteins ______________.

a.) have nitrogen in their chemical structures

b.) provide 4lcal/gram

c.) all of these are correct

d.) are comprised of amino acids

c.) all of these are correct

A scientist isolates a water-soluble compound from spider venom. The substance has

nitrogen, carbon, hydrogen, and oxygen in its chemical structure. When the scientist

injects the compound under the skin of mice, it causes certain structural materials in

cell membranes to break down. In her next experiment, the researcher will determine

whether the compound is toxic to humans. Based on this information, the compound is a

____________________.

a.) triglyceride

b.) protein

c.) hormone

b.) protein

Every amino acid has ________________ in its chemical structure.

a.) chloride

b.) potassium

, c.) nitrogen

d.) iron

c.) nitrogen

Which of the following amino acids is a dietary essential?

a.) phenylalanine

b.) homocysteine

c.) aspartic acid

d.) alanine

a.) phenylalanine

The chemical attraction between the acid group of one amino acid and the amino group

of another amino acid can form a ______________.

a.) fatty acid chain

b.) peptide bond

c.) partially hydrogenated protein

d.) glycosidic linkage

b.) peptide bond

Instructions for making proteins are coded in a cell's ________________.

a.) golgi apparatus

b.) ribosomes

c.) plasma membrane

d.) DNA

d.) DNA