Biochemistry - MCQ Practice Questions

Which of the following is a pentose sugar found in RNA?

Glycogen is primarily stored in which of the following tissues in humans?

What is the glycosidic linkage present in maltose?

Which enzyme catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate?

Sucrose is composed of which two monosaccharides?

The Maillard reaction occurs between reducing sugars and amino acids, leading to the formation of:

In hyperglycemia, excess glucose undergoes polyol pathway conversion. Which enzyme catalyzes the first step?

Which of the following is a branching enzyme in glycogen synthesis?

Cori cycle involves recycling of lactate from muscles to liver. Which enzyme is key in converting lactate back to glucose in the liver?

The anomeric carbon in glucose is:

HbA1c levels are used to monitor long-term glycemic control because glucose binds to hemoglobin through:

Cellulose differs from starch in that it contains:

In the pentose phosphate pathway, the oxidative phase primarily generates:

A patient with galactosemia has a deficiency in which enzyme?

Pasteur effect refers to the inhibition of glycolysis by oxidative phosphorylation. In terms of ATP and citrate, which statement is correct?

In glycolysis, which step is irreversible under physiological conditions and requires a different enzyme during gluconeogenesis?

The Warburg effect describes increased glycolysis in cancer cells even in the presence of oxygen. Which enzyme is typically upregulated in cancer cells to support this?

Which carbohydrate classification includes both monosaccharides and oligosaccharides?

In diabetes mellitus type 2, impaired fasting glucose (100-125 mg/dL) is associated with:

Which enzyme catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate in glycolysis?