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

Q: Which explanation of Haemoglobin is most accurate?

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

QID #24678 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Neuron is most accurate?

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: Which explanation of Neuron is most accurate?

A. includes organisms and their physical environment interacting together

B. favours heritable traits that improve reproductive success

C. is the basic structural and functional unit of life

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 #24677 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Haemoglobin is most accurate?

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

Question: Which explanation of Haemoglobin is most accurate?

A. induces immune memory without causing the target disease

B. is a biological agent capable of causing disease

C. transports most oxygen in human blood

D. is an immunoglobulin that recognizes a specific antigen

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 #24676 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Photosynthesis is most accurate?

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: Which explanation of Photosynthesis is most accurate?

A. is required for collagen synthesis and wound healing

B. converts light energy into chemical energy in green plants

C. performs metabolism, detoxification and bile production

D. supports calcium absorption and bone mineralization

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 #24675 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Meiosis is most accurate?

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

Question: Which explanation of Meiosis is most accurate?

A. reduces chromosome number during gamete formation

B. is the principal signalling cell of the nervous system

C. helps lower blood glucose by promoting uptake and storage

D. filters blood and regulates water and electrolyte balance

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 #24674 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Mitosis is most accurate?

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: Which explanation of Mitosis is most accurate?

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. 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 #24673 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Gene is most accurate?

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: Which explanation of Gene is most accurate?

A. stores hereditary information in most organisms

B. produces genetically similar daughter cells for growth and repair

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

D. is the cellular site of protein synthesis

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 #24672 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of DNA is most accurate?

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

Question: Which explanation of DNA is most accurate?

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

B. stores hereditary information in most organisms

C. favours heritable traits that improve reproductive success

D. is the basic structural and functional unit of life

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 #24671 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Ribosome is most accurate?

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: Which explanation of Ribosome is most accurate?

A. is the cellular site of protein synthesis

B. induces immune memory without causing the target disease

C. is a biological agent capable of causing disease

D. includes organisms and their physical environment interacting together

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 #24670 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Mitochondrion is most accurate?

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: Which explanation of Mitochondrion is most accurate?

A. supports calcium absorption and bone mineralization

B. is required for collagen synthesis and wound healing

C. is an immunoglobulin that recognizes a specific antigen

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 #24669 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Which explanation of Cell is most accurate?

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: Which explanation of Cell is most accurate?

A. filters blood and regulates water and electrolyte balance

B. performs metabolism, detoxification and bile production

C. is the basic structural and functional unit of life

D. helps lower blood glucose by promoting uptake and storage

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 #24668 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Natural selection.

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

Question: Choose the option that accurately represents Natural selection.

A. reduces chromosome number during gamete formation

B. converts light energy into chemical energy in green plants

C. produces genetically similar daughter cells for growth and repair

D. favours heritable traits that improve reproductive success

Correct Answer: D. 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 #24667 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Ecosystem.

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

Question: Choose the option that accurately represents Ecosystem.

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

B. is the cellular site of protein synthesis

C. includes organisms and their physical environment interacting together

D. stores hereditary information in most organisms

Correct Answer: C. 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 #24666 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Pathogen.

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

Question: Choose the option that accurately represents Pathogen.

A. favours heritable traits that improve reproductive success

B. is a biological agent capable of causing disease

C. is the basic structural and functional unit of life

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

Correct Answer: B. 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 #24665 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Vaccine.

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

Question: Choose the option that accurately represents Vaccine.

A. induces immune memory without causing the target disease

B. is a biological agent capable of causing disease

C. includes organisms and their physical environment interacting together

D. is an immunoglobulin that recognizes a specific antigen

Correct Answer: A. 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 #24664 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Antibody.

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

Question: Choose the option that accurately represents Antibody.

A. supports calcium absorption and bone mineralization

B. is required for collagen synthesis and wound healing

C. performs metabolism, detoxification and bile production

D. is an immunoglobulin that recognizes a specific antigen

Correct Answer: D. 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 #24663 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Vitamin C.

Correct Answer: C. 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: Choose the option that accurately represents Vitamin C.

A. filters blood and regulates water and electrolyte balance

B. is the principal signalling cell of the nervous system

C. is required for collagen synthesis and wound healing

D. helps lower blood glucose by promoting uptake and storage

Correct Answer: C. 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 #24662 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Vitamin D.

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

Question: Choose the option that accurately represents Vitamin D.

A. reduces chromosome number during gamete formation

B. supports calcium absorption and bone mineralization

C. converts light energy into chemical energy in green plants

D. transports most oxygen in human blood

Correct Answer: B. 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 #24661 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Liver.

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

Question: Choose the option that accurately represents Liver.

A. performs metabolism, detoxification and bile production

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

C. produces genetically similar daughter cells for growth and repair

D. stores hereditary information in most organisms

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

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QID #24660 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Kidney.

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

Question: Choose the option that accurately represents Kidney.

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

B. is the cellular site of protein synthesis

C. is the basic structural and functional unit of life

D. filters blood and regulates water and electrolyte balance

Correct Answer: D. 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 #24659 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Biology Hard

Choose the option that accurately represents Insulin.

Correct Answer: C. 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: Choose the option that accurately represents Insulin.

A. favours heritable traits that improve reproductive success

B. is a biological agent capable of causing disease

C. helps lower blood glucose by promoting uptake and storage

D. includes organisms and their physical environment interacting together

Correct Answer: C. 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

Which explanation of Neuron is most accurate?

Which explanation of Haemoglobin is most accurate?

Which explanation of Photosynthesis is most accurate?

Which explanation of Meiosis is most accurate?

Which explanation of Mitosis is most accurate?

Which explanation of Gene is most accurate?

Which explanation of DNA is most accurate?

Which explanation of Ribosome is most accurate?

Which explanation of Mitochondrion is most accurate?

Which explanation of Cell is most accurate?

Choose the option that accurately represents Natural selection.

Choose the option that accurately represents Ecosystem.

Choose the option that accurately represents Pathogen.

Choose the option that accurately represents Vaccine.

Choose the option that accurately represents Antibody.

Choose the option that accurately represents Vitamin C.

Choose the option that accurately represents Vitamin D.

Choose the option that accurately represents Liver.

Choose the option that accurately represents Kidney.

Choose the option that accurately represents Insulin.

Free MCQs with Answers and Explanations