Practice Questions

Following deamination, amino acids may enter respiration as

A. Krebs cycle intermediates
B. Cell wall components
C. Ribosomes
D. Chlorophyll molecules

Carbon skeletons enter various points of cellular respiration.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Oxidation of fatty acids results in direct formation of large amounts of

A. Acetyl-CoA
B. Peptidoglycan
C. Ribosomes
D. DNA polymerase

β-oxidation repeatedly removes two-carbon acetyl-CoA units.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The respiratory fate of glycerol involves its conversion into

A. Glycolytic intermediates
B. Amino acids
C. Nucleotides
D. Fatty acids only

Glycerol enters glycolysis after conversion into suitable intermediates.

nmdcat.online BIO NMDCAT
Jun 25, 2026

In cellular metabolism, the initial breakdown product of triglycerides is

A. Glycerol and fatty acids
B. Amino acids and glycerol
C. Pyruvate and acetyl-CoA
D. Glycogen and glucose

Lipases hydrolyze triglycerides into glycerol and fatty acids.

nmdcat.online BIO NMDCAT
Jun 25, 2026

During aerobic respiration, fatty acids contribute to ATP production after conversion into

A. Acetyl-CoA units
B. Pyruvate only
C. Lactate molecules
D. Oxaloacetate only

Fatty acids undergo β-oxidation producing acetyl-CoA, which enters the Krebs cycle.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Concerning AIDS, the ultimate consequence of severe CD4 depletion is

A. Profound immune deficiency
B. Enhanced immunity
C. Increased photosynthesis
D. Bone strengthening

Loss of helper T cells severely compromises immune function.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Among the following statements, HIV infection can be controlled effectively through

A. Early diagnosis and ART
B. Isolation from oxygen
C. Increased sugar intake
D. Antibiotics alone

Early treatment greatly improves survival and quality of life.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Regarding HIV treatment, antiretroviral drugs primarily

A. Suppress replication
B. Cure instantly
C. Destroy RBCs
D. Increase viral growth

ART reduces viral multiplication.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

The characteristic feature distinguishing HIV from bacteria is

A. Acellular viral nature
B. Peptidoglycan wall
C. Binary fission
D. Independent metabolism

HIV is an acellular virus.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Regarding AIDS, persistent fatigue is considered

A. Common symptom
B. Protective adaptation
C. Genetic marker
D. Unrelated condition

Chronic infection often causes fatigue.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026
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