UPPSC Health Education Officer (HEO) 2026 Mock Test Series with Answers

Q: How is Haemoglobin best explained?

Correct Answer: C. transports most oxygen in human blood. Haemoglobin transports most oxygen in human blood. The other choices describe different concepts.

QID #24638 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Neuron best explained?

Correct Answer: D. is the principal signalling cell of the nervous system
Neuron is the principal signalling cell of the nervous system. The other choices describe different concepts.

Question: How is Neuron best explained?

A. performs metabolism, detoxification and bile production

B. helps lower blood glucose by promoting uptake and storage

C. filters blood and regulates water and electrolyte balance

D. is the principal signalling cell of the nervous system

Correct Answer: D. is the principal signalling cell of the nervous systemExplanation: Neuron is the principal signalling cell of the nervous system. The other choices describe different concepts.

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QID #24637 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Haemoglobin best explained?

Correct Answer: C. transports most oxygen in human blood
Haemoglobin transports most oxygen in human blood. The other choices describe different concepts.

Question: How is Haemoglobin best explained?

A. reduces chromosome number during gamete formation

B. converts light energy into chemical energy in green plants

C. transports most oxygen in human blood

D. is the principal signalling cell of the nervous system

Correct Answer: C. transports most oxygen in human bloodExplanation: Haemoglobin transports most oxygen in human blood. The other choices describe different concepts.

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QID #24636 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Photosynthesis best explained?

Correct Answer: B. converts light energy into chemical energy in green plants
Photosynthesis converts light energy into chemical energy in green plants. The other choices describe different concepts.

Question: How is Photosynthesis best explained?

A. is a functional unit of heredity encoded in nucleic acid

B. converts light energy into chemical energy in green plants

C. produces genetically similar daughter cells for growth and repair

D. stores hereditary information in most organisms

Correct Answer: B. converts light energy into chemical energy in green plantsExplanation: Photosynthesis converts light energy into chemical energy in green plants. The other choices describe different concepts.

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QID #24635 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Meiosis best explained?

Correct Answer: A. reduces chromosome number during gamete formation
Meiosis reduces chromosome number during gamete formation. The other choices describe different concepts.

Question: How is Meiosis best explained?

A. reduces chromosome number during gamete formation

B. is the cellular site of protein synthesis

C. is the basic structural and functional unit of life

D. is a major site of aerobic energy production in eukaryotic cells

Correct Answer: A. reduces chromosome number during gamete formationExplanation: Meiosis reduces chromosome number during gamete formation. The other choices describe different concepts.

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QID #24634 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Mitosis best explained?

Correct Answer: D. produces genetically similar daughter cells for growth and repair
Mitosis produces genetically similar daughter cells for growth and repair. The other choices describe different concepts.

Question: How is Mitosis best explained?

A. favours heritable traits that improve reproductive success

B. is a biological agent capable of causing disease

C. includes organisms and their physical environment interacting together

D. produces genetically similar daughter cells for growth and repair

Correct Answer: D. produces genetically similar daughter cells for growth and repairExplanation: Mitosis produces genetically similar daughter cells for growth and repair. The other choices describe different concepts.

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QID #24633 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Gene best explained?

Correct Answer: C. is a functional unit of heredity encoded in nucleic acid
Gene is a functional unit of heredity encoded in nucleic acid. The other choices describe different concepts.

Question: How is Gene best explained?

A. is required for collagen synthesis and wound healing

B. is an immunoglobulin that recognizes a specific antigen

C. is a functional unit of heredity encoded in nucleic acid

D. induces immune memory without causing the target disease

Correct Answer: C. is a functional unit of heredity encoded in nucleic acidExplanation: Gene is a functional unit of heredity encoded in nucleic acid. The other choices describe different concepts.

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QID #24632 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is DNA best explained?

Correct Answer: B. stores hereditary information in most organisms
DNA stores hereditary information in most organisms. The other choices describe different concepts.

Question: How is DNA best explained?

A. performs metabolism, detoxification and bile production

B. stores hereditary information in most organisms

C. supports calcium absorption and bone mineralization

D. filters blood and regulates water and electrolyte balance

Correct Answer: B. stores hereditary information in most organismsExplanation: DNA stores hereditary information in most organisms. The other choices describe different concepts.

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QID #24631 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Ribosome best explained?

Correct Answer: A. is the cellular site of protein synthesis
Ribosome is the cellular site of protein synthesis. The other choices describe different concepts.

Question: How is Ribosome best explained?

A. is the cellular site of protein synthesis

B. helps lower blood glucose by promoting uptake and storage

C. transports most oxygen in human blood

D. is the principal signalling cell of the nervous system

Correct Answer: A. is the cellular site of protein synthesisExplanation: Ribosome is the cellular site of protein synthesis. The other choices describe different concepts.

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QID #24630 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Mitochondrion best explained?

Correct Answer: D. is a major site of aerobic energy production in eukaryotic cells
Mitochondrion is a major site of aerobic energy production in eukaryotic cells. The other choices describe different concepts.

Question: How is Mitochondrion best explained?

A. converts light energy into chemical energy in green plants

B. produces genetically similar daughter cells for growth and repair

C. reduces chromosome number during gamete formation

D. is a major site of aerobic energy production in eukaryotic cells

Correct Answer: D. is a major site of aerobic energy production in eukaryotic cellsExplanation: Mitochondrion is a major site of aerobic energy production in eukaryotic cells. The other choices describe different concepts.

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QID #24629 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

How is Cell best explained?

Correct Answer: C. is the basic structural and functional unit of life
Cell is the basic structural and functional unit of life. The other choices describe different concepts.

Question: How is Cell best explained?

A. is the cellular site of protein synthesis

B. stores hereditary information in most organisms

C. is the basic structural and functional unit of life

D. is a functional unit of heredity encoded in nucleic acid

Correct Answer: C. is the basic structural and functional unit of lifeExplanation: Cell is the basic structural and functional unit of life. The other choices describe different concepts.

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QID #24628 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Natural selection.

Correct Answer: B. favours heritable traits that improve reproductive success
Natural selection favours heritable traits that improve reproductive success. The other choices describe different concepts.

Question: Select the accurate statement about Natural selection.

A. induces immune memory without causing the target disease

B. favours heritable traits that improve reproductive success

C. is a biological agent capable of causing disease

D. includes organisms and their physical environment interacting together

Correct Answer: B. favours heritable traits that improve reproductive successExplanation: Natural selection favours heritable traits that improve reproductive success. The other choices describe different concepts.

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QID #24627 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Ecosystem.

Correct Answer: A. includes organisms and their physical environment interacting together
Ecosystem includes organisms and their physical environment interacting together. The other choices describe different concepts.

Question: Select the accurate statement about Ecosystem.

A. includes organisms and their physical environment interacting together

B. is required for collagen synthesis and wound healing

C. is an immunoglobulin that recognizes a specific antigen

D. supports calcium absorption and bone mineralization

Correct Answer: A. includes organisms and their physical environment interacting togetherExplanation: Ecosystem includes organisms and their physical environment interacting together. The other choices describe different concepts.

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QID #24626 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Pathogen.

Correct Answer: D. is a biological agent capable of causing disease
Pathogen is a biological agent capable of causing disease. The other choices describe different concepts.

Question: Select the accurate statement about Pathogen.

A. filters blood and regulates water and electrolyte balance

B. performs metabolism, detoxification and bile production

C. helps lower blood glucose by promoting uptake and storage

D. is a biological agent capable of causing disease

Correct Answer: D. is a biological agent capable of causing diseaseExplanation: Pathogen is a biological agent capable of causing disease. The other choices describe different concepts.

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QID #24625 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Vaccine.

Correct Answer: C. induces immune memory without causing the target disease
Vaccine induces immune memory without causing the target disease. The other choices describe different concepts.

Question: Select the accurate statement about Vaccine.

A. is the principal signalling cell of the nervous system

B. converts light energy into chemical energy in green plants

C. induces immune memory without causing the target disease

D. transports most oxygen in human blood

Correct Answer: C. induces immune memory without causing the target diseaseExplanation: Vaccine induces immune memory without causing the target disease. The other choices describe different concepts.

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QID #24624 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Antibody.

Correct Answer: B. is an immunoglobulin that recognizes a specific antigen
Antibody is an immunoglobulin that recognizes a specific antigen. The other choices describe different concepts.

Question: Select the accurate statement about Antibody.

A. is a functional unit of heredity encoded in nucleic acid

B. is an immunoglobulin that recognizes a specific antigen

C. produces genetically similar daughter cells for growth and repair

D. reduces chromosome number during gamete formation

Correct Answer: B. is an immunoglobulin that recognizes a specific antigenExplanation: Antibody is an immunoglobulin that recognizes a specific antigen. The other choices describe different concepts.

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QID #24623 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Vitamin C.

Correct Answer: A. is required for collagen synthesis and wound healing
Vitamin C is required for collagen synthesis and wound healing. The other choices describe different concepts.

Question: Select the accurate statement about Vitamin C.

A. is required for collagen synthesis and wound healing

B. is the cellular site of protein synthesis

C. stores hereditary information in most organisms

D. is a major site of aerobic energy production in eukaryotic cells

Correct Answer: A. is required for collagen synthesis and wound healingExplanation: Vitamin C is required for collagen synthesis and wound healing. The other choices describe different concepts.

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QID #24622 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Vitamin D.

Correct Answer: D. supports calcium absorption and bone mineralization
Vitamin D supports calcium absorption and bone mineralization. The other choices describe different concepts.

Question: Select the accurate statement about Vitamin D.

A. favours heritable traits that improve reproductive success

B. is the basic structural and functional unit of life

C. includes organisms and their physical environment interacting together

D. supports calcium absorption and bone mineralization

Correct Answer: D. supports calcium absorption and bone mineralizationExplanation: Vitamin D supports calcium absorption and bone mineralization. The other choices describe different concepts.

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QID #24621 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Liver.

Correct Answer: C. performs metabolism, detoxification and bile production
Liver performs metabolism, detoxification and bile production. The other choices describe different concepts.

Question: Select the accurate statement about Liver.

A. is a biological agent capable of causing disease

B. is an immunoglobulin that recognizes a specific antigen

C. performs metabolism, detoxification and bile production

D. induces immune memory without causing the target disease

Correct Answer: C. performs metabolism, detoxification and bile productionExplanation: Liver performs metabolism, detoxification and bile production. The other choices describe different concepts.

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QID #24620 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Kidney.

Correct Answer: B. filters blood and regulates water and electrolyte balance
Kidney filters blood and regulates water and electrolyte balance. The other choices describe different concepts.

Question: Select the accurate statement about Kidney.

A. performs metabolism, detoxification and bile production

B. filters blood and regulates water and electrolyte balance

C. supports calcium absorption and bone mineralization

D. is required for collagen synthesis and wound healing

Correct Answer: B. filters blood and regulates water and electrolyte balanceExplanation: Kidney filters blood and regulates water and electrolyte balance. The other choices describe different concepts.

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QID #24619 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Medium

Select the accurate statement about Insulin.

Correct Answer: A. helps lower blood glucose by promoting uptake and storage
Insulin helps lower blood glucose by promoting uptake and storage. The other choices describe different concepts.

Question: Select the accurate statement about Insulin.

A. helps lower blood glucose by promoting uptake and storage

B. is the principal signalling cell of the nervous system

C. filters blood and regulates water and electrolyte balance

D. transports most oxygen in human blood

Correct Answer: A. helps lower blood glucose by promoting uptake and storageExplanation: Insulin helps lower blood glucose by promoting uptake and storage. The other choices describe different concepts.

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UPPSC Health Education Officer (HEO) 2026 Mock Test Series with Answers | Military Brat Defence Academy

How is Neuron best explained?

How is Haemoglobin best explained?

How is Photosynthesis best explained?

How is Meiosis best explained?

How is Mitosis best explained?

How is Gene best explained?

How is DNA best explained?

How is Ribosome best explained?

How is Mitochondrion best explained?

How is Cell best explained?

Select the accurate statement about Natural selection.

Select the accurate statement about Ecosystem.

Select the accurate statement about Pathogen.

Select the accurate statement about Vaccine.

Select the accurate statement about Antibody.

Select the accurate statement about Vitamin C.

Select the accurate statement about Vitamin D.

Select the accurate statement about Liver.

Select the accurate statement about Kidney.

Select the accurate statement about Insulin.

Free MCQs with Answers and Explanations