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Practice Questions

The overall process of all chemical reactions occurring in an organism, involving both anabolic and catabolic pathways, is known as:

A. Homeostasis
B. Metabolism ✓
C. Respiration
D. Digestion
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Jun 6, 2026

A patient with symptoms of scurvy (bleeding gums, poor wound healing) is deficient in Vitamin C. Vitamin C is essential for the synthesis of:

A. Hemoglobin
B. Collagen ✓
C. DNA
D. Glycogen
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Jun 6, 2026

The process of breaking down large protein molecules into smaller peptides and then into individual amino acids is called:

A. Glycolysis
B. Lipolysis
C. Proteolysis ✓
D. Nucleolysis
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Jun 6, 2026

A lipid that is synthesized in the smooth endoplasmic reticulum and serves as the primary form of energy storage in adipose tissue is:

A. Phospholipid
B. Cholesterol
C. Triglyceride ✓
D. Fatty acid
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Jun 6, 2026

The pH of a solution can be precisely measured using a:

A. Thermometer
B. Spectrophotometer
C. pH meter ✓
D. Microscope
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Jun 6, 2026

A carbohydrate that serves as a structural component of plant cell walls and is largely indigestible by human enzymes is:

A. Starch
B. Glycogen
C. Cellulose ✓
D. Sucrose
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Jun 6, 2026

The net gain of ATP molecules from one molecule of glucose during anaerobic glycolysis is:

A. 2 ATP ✓
B. 4 ATP
C. 30?32 ATP
D. 0 ATP
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Jun 6, 2026

The specific region on an enzyme where the substrate binds and catalysis occurs is called the:

A. Allosteric site
B. Regulatory site
C. Active site ✓
D. Binding domain
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Jun 6, 2026

A deficiency in Folic Acid can lead to megaloblastic anemia. Folic acid is a crucial vitamin for:

A. Blood clotting
B. DNA synthesis and cell division ✓
C. Vision
D. Bone health
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Jun 6, 2026

The central dogma of molecular biology describes the flow of genetic information in cells as:

A. Protein ? DNA ? RNA
B. RNA ? DNA ? Protein
C. DNA ? RNA ? Protein ✓
D. Protein ? RNA ? DNA
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Jun 6, 2026
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