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Bio chemistry for nurses

164 questions found

Practice Questions

A biochemist is studying an enzyme whose activity is regulated by phosphorylation and dephosphorylation. This type of regulation is known as:

A. Allosteric regulation

B. Covalent modification ✓

C. Feedback inhibition

D. Zymogen activation

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Jun 6, 2026

The process of synthesizing glycogen from glucose is called:

A. Glycogenolysis

B. Glycolysis

C. Glycogenesis ✓

D. Gluconeogenesis

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Jun 6, 2026

A patient with malabsorption syndrome is unable to absorb fat-soluble vitamins. Which of the following vitamins are considered fat-soluble?

A. Vitamin B complex and Vitamin C

B. Vitamin A, D, E, K ✓

C. Folic acid and Biotin

D. Thiamine and Riboflavin

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Jun 6, 2026

A patient with a deficiency in a certain vitamin develops night blindness. This symptom is associated with a deficiency in:

A. Vitamin C

B. Vitamin A ✓

C. Vitamin B12

D. Vitamin D

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Jun 6, 2026

The enzyme that catalyzes the rate-limiting step in glycolysis, converting fructose-6-phosphate to fructose-1,6-bisphosphate, is:

A. Hexokinase

B. Pyruvate kinase

C. Phosphofructokinase-1 (PFK-1) ✓

D. Glucose-6-phosphatase

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Jun 6, 2026

A patient has a diet rich in carbohydrates. Excess glucose not immediately used for energy can be stored in the liver and muscles as:

A. Fructose

B. Sucrose

C. Glycogen ✓

D. Starch

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Jun 6, 2026

The process by which the genetic information encoded in mRNA is used to synthesize a protein is called:

A. Replication

B. Transcription

C. Translation ✓

D. Reverse transcription

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nmdcat.online Bio chemistry for nurses

Jun 6, 2026

A lipid derived from cholesterol that is involved in emulsifying dietary fats in the small intestine is:

A. Triglyceride

B. Phospholipid

C. Bile acid ✓

D. Prostaglandin

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Jun 6, 2026

A cell requires a large amount of ATP and has numerous cristae in its mitochondria. This indicates high activity in which metabolic pathway?

A. Glycolysis

B. Electron Transport Chain and Oxidative Phosphorylation ✓

C. Pentose Phosphate Pathway

D. Fatty acid synthesis

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Jun 6, 2026

A patient with a protein deficiency exhibits poor wound healing and weakened immune response. This highlights the diverse functions of proteins, including their role as:

A. Energy storage molecules

B. Genetic information carriers

C. Structural components and enzymes ✓

D. Primary components of cell membranes

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Jun 6, 2026

The enzyme responsible for breaking down starch into smaller sugar molecules in the digestive tract is:

A. Lipase

B. Protease

C. Amylase ✓

D. Nuclease

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Jun 6, 2026

A competitive inhibitor of an enzyme will typically:

A. Bind to an allosteric site.

B. Decrease the Vmax? of the reaction.

C. Increase the Km? of the reaction without affecting Vmax?. ✓

D. Irreversibly bind to the enzyme.

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Jun 6, 2026

The final common pathway for the oxidation of carbohydrates, fats, and amino acids, generating ATP and carbon dioxide, is the:

A. Glycolysis

B. Pentose Phosphate Pathway

C. Electron Transport Chain

D. Krebs Cycle ✓

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Jun 6, 2026

A person is on a low-fat diet. They still need to obtain essential fatty acids. Essential fatty acids are those that:

A. Are saturated fats.

B. Are synthesized by the body.

C. Must be obtained from the diet because the body cannot synthesize them. ✓

D. Are found only in animal products.

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Jun 6, 2026

The bonds that link amino acids together to form polypeptide chains are called:

A. Glycosidic bonds

B. Ester bonds

C. Peptide bonds ✓

D. Phosphodiester bonds

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Jun 6, 2026

A genetic mutation leads to a change in a single nucleotide in the DNA sequence, but it does not change the amino acid sequence of the protein. This type of mutation is called a:

A. Missense mutation

B. Nonsense mutation

C. Silent mutation ✓

D. Frameshift mutation

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nmdcat.online Bio chemistry for nurses

Jun 6, 2026

A patient is experiencing rapid, shallow breathing. This could be a compensatory mechanism for:

A. Metabolic alkalosis

B. Respiratory acidosis

C. Metabolic acidosis ✓

D. Respiratory alkalosis

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Jun 6, 2026

The process of breaking down complex molecules into simpler ones, usually releasing energy, is called:

A. Anabolism

B. Catabolism ✓

C. Metabolism

D. Homeostasis

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nmdcat.online Bio chemistry for nurses

Jun 6, 2026

A biochemist is studying the movement of molecules across a cell membrane against their concentration gradient, requiring energy input. This process is known as:

A. Simple diffusion

B. Facilitated diffusion

C. Osmosis

D. Active transport ✓

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Jun 6, 2026

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Bio chemistry for nurses

Practice Questions

A biochemist is studying an enzyme whose activity is regulated by phosphorylation and dephosphorylation. This type of regulation is known as:

The process of synthesizing glycogen from glucose is called:

A patient with malabsorption syndrome is unable to absorb fat-soluble vitamins. Which of the following vitamins are considered fat-soluble?

A patient with a deficiency in a certain vitamin develops night blindness. This symptom is associated with a deficiency in:

The enzyme that catalyzes the rate-limiting step in glycolysis, converting fructose-6-phosphate to fructose-1,6-bisphosphate, is:

A patient has a diet rich in carbohydrates. Excess glucose not immediately used for energy can be stored in the liver and muscles as:

The process by which the genetic information encoded in mRNA is used to synthesize a protein is called:

A lipid derived from cholesterol that is involved in emulsifying dietary fats in the small intestine is:

A cell requires a large amount of ATP and has numerous cristae in its mitochondria. This indicates high activity in which metabolic pathway?

A patient with a protein deficiency exhibits poor wound healing and weakened immune response. This highlights the diverse functions of proteins, including their role as:

The enzyme responsible for breaking down starch into smaller sugar molecules in the digestive tract is:

A competitive inhibitor of an enzyme will typically:

The final common pathway for the oxidation of carbohydrates, fats, and amino acids, generating ATP and carbon dioxide, is the:

A person is on a low-fat diet. They still need to obtain essential fatty acids. Essential fatty acids are those that:

The bonds that link amino acids together to form polypeptide chains are called:

A genetic mutation leads to a change in a single nucleotide in the DNA sequence, but it does not change the amino acid sequence of the protein. This type of mutation is called a:

A patient is experiencing rapid, shallow breathing. This could be a compensatory mechanism for:

The process of breaking down complex molecules into simpler ones, usually releasing energy, is called:

A biochemist is studying the movement of molecules across a cell membrane against their concentration gradient, requiring energy input. This process is known as:

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