BIOCHEMISTRY WGU
C785 WITH CORRECT
QUESTION AND
ANSWERS
, Nonenzymatic glycosylation or glycation creates glycoproteins by:
1. Chemical addition of sugars to polypeptides
2. Extracellular synthesis
3. Attaching 20 amino acids
4. Secretion into extracellular matrix - correct ans:1
Nonenzymatic glycosylation or glycation creates glycoproteins by the
chemical addition of sugars to polypeptides. Since this type of glycosylation
is nonenzymatic, the time and the concentration of sugar control
glycosylation. Because people with higher circulating levels of glucose have
higher levels of nonenzymatic glycosylation, measurement of the
glycosylated hemoglobin A1c is a diagnostic test used to monitor blood sugar
levels in persons with diabetes.
Which of the following is a 5-carbon sugar?
1. Glucose
2. Fructose
3. Ribose
4. Sucrose - correct ans:3
Ribose is a pentose, a simple sugar (monosaccharide) that has five carbon
atoms per molecule. It is synthesized in the body and obtained in small
amounts from consumption of ripe fruits and vegetables. Ribose serves as an
energy substrate for the resynthesis of ATP and is a key component of
ribonucleic acid (RNA). Deoxyribose, a component of DNA, also is a pentose.
The optimum pH of pepsin is:
1. 5
2. 7.1
3. 8.1
4. 2 - correct ans:4
C785 WITH CORRECT
QUESTION AND
ANSWERS
, Nonenzymatic glycosylation or glycation creates glycoproteins by:
1. Chemical addition of sugars to polypeptides
2. Extracellular synthesis
3. Attaching 20 amino acids
4. Secretion into extracellular matrix - correct ans:1
Nonenzymatic glycosylation or glycation creates glycoproteins by the
chemical addition of sugars to polypeptides. Since this type of glycosylation
is nonenzymatic, the time and the concentration of sugar control
glycosylation. Because people with higher circulating levels of glucose have
higher levels of nonenzymatic glycosylation, measurement of the
glycosylated hemoglobin A1c is a diagnostic test used to monitor blood sugar
levels in persons with diabetes.
Which of the following is a 5-carbon sugar?
1. Glucose
2. Fructose
3. Ribose
4. Sucrose - correct ans:3
Ribose is a pentose, a simple sugar (monosaccharide) that has five carbon
atoms per molecule. It is synthesized in the body and obtained in small
amounts from consumption of ripe fruits and vegetables. Ribose serves as an
energy substrate for the resynthesis of ATP and is a key component of
ribonucleic acid (RNA). Deoxyribose, a component of DNA, also is a pentose.
The optimum pH of pepsin is:
1. 5
2. 7.1
3. 8.1
4. 2 - correct ans:4
