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Practice Questions

A protein’s secondary structure involves localized folding patterns like alpha-helices and beta-pleated sheets, which are primarily stabilized by:

A. Covalent bonds
B. Ionic bonds
C. Hydrogen bonds between backbone atoms ✓
D. Disulfide bonds
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

The overall sequence of nucleotides in a DNA molecule constitutes its:

A. Tertiary structure
B. Secondary structure
C. Primary structure ✓
D. Quaternary structure
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

A patient with a chronic inflammatory condition may have elevated levels of certain signaling molecules derived from fatty acids. These molecules are:

A. Steroids
B. Triglycerides
C. Prostaglandins ✓
D. Phospholipids
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

A cell swells and bursts when placed in a solution with a very low solute concentration. This phenomenon is caused by water moving into the cell via:

A. Active transport
B. Facilitated diffusion
C. Simple diffusion
D. Osmosis ✓
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

The energy released from catabolic reactions is captured and stored in the form of:

A. ADP
B. Glucose
C. ATP ✓
D. Amino acids
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

A deficiency in Vitamin B6 (Pyridoxine) can lead to neurological symptoms and skin problems. Vitamin B6 is important for:

A. Blood clotting
B. Amino acid metabolism ✓
C. Bone health
D. Vision
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

The process of synthesizing RNA from a DNA template is called:

A. Replication
B. Translation
C. Transcription ✓
D. Reverse transcription
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

A patient with hyperlipidemia needs to understand the structure of lipoproteins. The outer layer of a lipoprotein, allowing it to be soluble in blood, is primarily composed of:

A. Triglycerides
B. Cholesterol
C. Phospholipids and apoproteins ✓
D. Fatty acids
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

The major metabolic organ responsible for maintaining blood glucose homeostasis by performing glycogenesis, glycogenolysis, and gluconeogenesis is the:

A. Muscle
B. Brain
C. Adipose tissue
D. Liver ✓
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026

A protein that functions as an antibody, playing a key role in the immune system by binding to specific antigens, is an example of a protein’s:

A. Transport function
B. Structural function
C. Defensive function ✓
D. Catalytic function
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nmdcat.online Bio chemistry for nurses
Jun 6, 2026
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