Nursing Biology Chapter 2 MCQs - Bioenergetics

Looking for Nursing Biology Chapter 2 MCQs with answers and explanations? You've come to the right place. This page contains carefully curated solved multiple choice questions from Bioenergetics covering Photosynthesis, Glycolysis, Krebs Cycle, Electron Transport Chain and more. These MCQs follow the official Nursing 2026 syllabus issued by Various Nursing Colleges. Practice these MCQs to boost your Nursing score.

10+ MCQs With Answers Explanations Updated 2026
Photosynthesis Glycolysis Krebs Cycle Electron Transport Chain ATP Synthesis Light & Dark Reactions

Start Practicing Bioenergetics MCQs

We have carefully curated MCQs from Chapter 2 (Bioenergetics) following the official Nursing 2026 syllabus. Each question comes with the correct answer and detailed explanation.

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Bioenergetics - Solved MCQs with Explanations

Below are important MCQs from Nursing Biology Chapter 2 (Bioenergetics). Each question includes the correct answer highlighted in green and a detailed explanation to help you understand the concept.

Q1 Easy Glycolysis

Net gain of ATP from glycolysis is:

A 4 ATP
B 2 ATP
C 36 ATP
D 38 ATP
Explanation

Glycolysis produces 4 ATP but uses 2 ATP in the energy investment phase, giving a net gain of 2 ATP per glucose molecule in the cytoplasm.

Q2 Easy Krebs Cycle

Krebs cycle occurs in the:

A Cytoplasm
B Matrix of mitochondria
C Inner membrane
D Nucleus
Explanation

The Krebs cycle takes place in the mitochondrial matrix where acetyl-CoA is oxidized to CO2, producing NADH, FADH2, and GTP.

Q3 Medium Electron Transport Chain

The ETC primarily generates:

A Glucose
B CO2
C A proton gradient for ATP
D Carbon fixation
Explanation

The electron transport chain creates a proton gradient across the inner mitochondrial membrane through redox reactions, driving ATP synthase.

Q4 Easy Photosynthesis

O2 released in photosynthesis comes from:

A CO2
B Water
C Glucose
D NADPH
Explanation

Oxygen comes from the photolysis of water molecules in the light reactions. Proven using isotopic tracers with O-18 labeled water.

Q5 Medium Electron Transport Chain

Final electron acceptor in aerobic respiration:

A NAD+
B FAD
C Oxygen
D Cytochrome c
Explanation

O2 is the final electron acceptor in the ETC. It combines with electrons and H+ to form water. Without O2, the ETC stops.

Q6 Medium ATP Synthesis

ATP synthase works by:

A Osmosis
B Chemiosmosis
C Active transport
D Diffusion
Explanation

ATP synthase generates ATP through chemiosmosis - H+ ions flow down their gradient through the enzyme, driving ADP phosphorylation.

Q7 Easy Photosynthesis

Light reactions occur in:

A Stroma
B Thylakoid membranes
C Cytoplasm
D Cell membrane
Explanation

Light-dependent reactions occur in thylakoid membranes where photosystems I and II, electron carriers, and ATP synthase are embedded.

Q8 Medium Photosynthesis

Calvin cycle uses which enzyme to fix CO2?

A PEP carboxylase
B RuBisCO
C ATP synthase
D Hexokinase
Explanation

RuBisCO fixes CO2 in the Calvin cycle. It is the most abundant enzyme on Earth, catalyzing the first step of carbon fixation.

Q9 Medium ATP Synthesis

Complete oxidation of glucose yields:

A 2 ATP
B 4 ATP
C 36-38 ATP
D 100 ATP
Explanation

Complete aerobic oxidation yields 36-38 ATP: 2 from glycolysis, 2 from Krebs cycle, and 32-34 from oxidative phosphorylation.

Q10 Easy Glycolysis

Anaerobic pyruvate conversion produces:

A Acetyl CoA
B Ethanol or Lactic acid
C Citric acid
D Oxaloacetate
Explanation

Without oxygen, pyruvate becomes ethanol + CO2 (yeast) or lactic acid (muscle) to regenerate NAD+ for continued glycolysis.

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What You'll Learn in Bioenergetics

Bioenergetics is a fundamental chapter in Nursing Biology. This chapter covers the following important topics that frequently appear in the Nursing exam:

By practicing these MCQs, you will develop a strong understanding of Bioenergetics concepts and be well-prepared for the Nursing 2026 exam.

How to Prepare Bioenergetics for Nursing 2026

Follow these expert tips to master Bioenergetics and score maximum marks in Nursing:

  1. Read the textbook carefully - Cover all concepts in Chapter 2 (Bioenergetics) from your Biology textbook first.
  2. Make short notes - Write down key definitions, formulas, and important points for quick revision.
  3. Practice MCQs daily - Solve at least 20-30 MCQs from Bioenergetics every day using Apna MCQs platform.
  4. Review explanations - Read the detailed explanations for each MCQ to understand the concept, not just memorize answers.
  5. Take timed tests - Practice under exam conditions using our Nursing mock tests to improve speed and accuracy.
  6. Focus on weak areas - Identify topics in Bioenergetics where you score low and practice more MCQs on those specific topics.

Important Topics in Bioenergetics for Nursing

Based on analysis of past Nursing papers, these topics from Chapter 2 (Bioenergetics) are most frequently tested:

Photosynthesis High frequency in Nursing
Glycolysis Very High frequency in Nursing
Krebs Cycle Medium frequency in Nursing
Electron Transport Chain High frequency in Nursing
ATP Synthesis Medium frequency in Nursing
Light & Dark Reactions High frequency in Nursing

Frequently Asked Questions

How many MCQs come from Bioenergetics in Nursing 2026?

In Nursing, Biology typically has 100 total MCQs. Chapter 2 (Bioenergetics) usually contributes 3-5 MCQs in the actual exam. On Apna MCQs, we provide 10+ practice MCQs with detailed explanations for thorough preparation.

Are these Nursing Biology Chapter 2 MCQs updated for 2026?

Yes! All MCQs on Apna MCQs are updated according to the latest Various Nursing Colleges Nursing 2026 syllabus. Our team of expert educators regularly reviews and adds new questions based on the latest exam patterns and past papers.

What topics are covered in Bioenergetics MCQs?

Our Bioenergetics MCQs cover all important topics including Photosynthesis, Glycolysis, Krebs Cycle and more. Each topic has multiple MCQs ranging from easy to hard difficulty to ensure comprehensive preparation.

How to prepare Bioenergetics for Nursing?

To prepare Bioenergetics for Nursing: 1) Read the textbook thoroughly, 2) Make notes of key concepts, 3) Practice MCQs on Apna MCQs with explanations, 4) Take mock tests, 5) Review weak areas. Our chapter-wise approach ensures you cover all 16 chapters systematically.

Where can I practice more Nursing Biology MCQs?

After completing Chapter 2, move to the next chapter on Apna MCQs. We cover all 16 chapters of Biology with chapter-wise MCQs. You can also take full-length Nursing mock tests for timed practice.

Are these MCQs from Nursing past papers?

Our MCQs include questions modeled on Nursing past papers as well as original questions created by subject experts. The questions cover all topics in Bioenergetics that are part of the official Nursing syllabus.

Can I use these MCQs for board exam preparation too?

Absolutely! While these MCQs are organized for Nursing preparation, the content covers the same Biology Chapter 2 (Bioenergetics) topics tested in FSc/Inter board exams. Many students use Apna MCQs for both board and entry test preparation.

Is Apna MCQs free to use?

Yes! Apna MCQs provides free access to chapter-wise MCQs for MDCAT, ECAT, LAT, IBA, Nursing and other entry tests. We believe quality education should be accessible to every student in Pakistan.