Question 1

The following structure is a(n) ___ . It contains the following amino acids, ___ , ___ and ___ .  &#10;A) tripeptide, alanine, phenylalanine, arginine&#10;B) tripeptide, alanine, phenylalanine, glutamine&#10;C) tetrapeptide, alanine, threonine, glutamic acid&#10;D) tetrapeptide, alanine, serine, glutamine

Accepted Answer

tetrapeptide, alanine, serine, glutamine&#10;

Question 2

Which of the following are essential amino acids?&#10;A) alanine&#10;B) valine&#10;C) glutamine&#10;D) phenylalanine&#10;E) cysteine&#10;F) methionine&#10;G) a, c, e&#10;H) b, d, f

Accepted Answer

Valine, phenylalanine, and methionine are essential amino acids, meaning they cannot be synthesized by the body and must be obtained through diet.

Question 3

Which of the following represents threonine at physiological pH?  &#10;A) I&#10;B) II&#10;C) III&#10;D) IV

Accepted Answer

III&#10;

Question 4

Which of the following represents aspartic acid at physiological pH?  &#10;A) I&#10;B) II&#10;C) III&#10;D) IV

Accepted Answer

The answer of Which of the following represents aspartic acid...

Question 5

Which of the following represents lysine at physiological pH?  &#10;A) I&#10;B) II&#10;C) III&#10;D) IV

Accepted Answer

The answer of Which of the following represents lysine at...

Question 6

What is the product of the following reaction?  &#10;A) valine&#10;B) isoleucine&#10;C) leucine&#10;D) lysine

Accepted Answer

Potassium phthalamide synthesis of amino acids.

Question 7

What is the product of the following reaction?  &#10;A) Phenylalanine&#10;B) Histidine&#10;C) Proline&#10;D) Tyrosine

Accepted Answer

Strecker synthesis of amino acids.

Question 8

What is the product of the following reaction?  &#10;A) Cysteine&#10;B) Serine&#10;C) Tyrosine&#10;D) Threonine

Accepted Answer

Strecker synthesis of amino acids.

Question 9

What dipeptide is produced in the following reaction?  &#10;A) Isoleucine-alanine&#10;B) Leucine-glycine&#10;C) Valine-alanine&#10;D) Threonine-glycine

Accepted Answer

Synthesis of dipeptide using protecting and activating groups.

Question 10

What is the product of the following reaction?  &#10;A) Histidine-cysteine&#10;B) Glutamine-serine&#10;C) Asparagine-threonine&#10;D) Glutamine-tyrosine

Accepted Answer

Synthesis of dipeptide using protecting and activating groups.

Deck 24: Amino Acids and Proteins