Biochemistry WGU C785 questions and answers
2026\2027 A+ Grade
No enzymatic 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 answer 1
No enzymatic glycosylation or glycation creates glycoproteins by the chemical addition of sugars to
polypeptides. Since this type of glycosylation is no enzymatic, the time and the concentration of sugar
control glycosylation. Because people with higher circulating levels of glucose have higher levels of no
enzymatic 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 answer 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
2026\2027 A+ Grade
No enzymatic 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 answer 1
No enzymatic glycosylation or glycation creates glycoproteins by the chemical addition of sugars to
polypeptides. Since this type of glycosylation is no enzymatic, the time and the concentration of sugar
control glycosylation. Because people with higher circulating levels of glucose have higher levels of no
enzymatic 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 answer 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
