9th Class Biology Chapter 7 MCQs with Answers

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Grade 9 Biology Chapter 7 Online Quiz

By presenting 3 options to choose from, 9th Class Chapter 7 Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of 9th Class Questions and Answers and click over the correct answer.

• Test Name: 9th Class Chapter 7 Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure high marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply comment below this post, so that we can update the answer in the quiz section.

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9th Class Biology Ch 7: Bioenergetics

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1 / 40

What is the main goal of cellular respiration?

Synthesize proteins

Store genetic information

Produce ATP for cellular activities

2 / 40

In which organelle does cellular respiration occur?

Endoplasmic Reticulum

Nucleus

Mitochondria

3 / 40

What is bioenergetics?

Study of energy flow through living systems

Study of ecosystems

Study of genetics

4 / 40

What is the term for the process by which ATP is synthesized using the energy stored in a proton gradient?

Glycolysis

Chemiosmosis

Oxidative phosphorylation

5 / 40

What is the term for the breakdown of glucose to pyruvate in the absence of oxygen?

Oxidative phosphorylation

Aerobic respiration

Anaerobic glycolysis

6 / 40

What is the role of carotenoids in photosynthesis?

Release oxygen during the light-dependent reactions

Capture light energy and convert it into chemical energy

Accessory pigments that broaden the spectrum of light for photosynthesis

7 / 40

What is the term for the metabolic pathway that breaks down fatty acids for energy?

Glycolysis

Beta-oxidation

Krebs cycle

8 / 40

What is the primary source of oxygen released during photosynthesis?

Splitting water molecules

Breakdown of glucose

Absorption of carbon dioxide

9 / 40

Which molecule is the primary product of glycolysis?

Pyruvate

Oxygen

Carbon dioxide

10 / 40

Where do the reactions of glycolysis take place in eukaryotic cells?

Endoplasmic Reticulum

Mitochondrial matrix

Cytoplasm

11 / 40

What is the purpose of the light-dependent reactions in photosynthesis?

Generate ATP and NADPH

Produce glucose directly

Fix carbon dioxide

12 / 40

During which process is ATP synthesized in cells?

Krebs cycle

Chemiosmosis

Glycolysis

13 / 40

Which stage of cellular respiration produces the most ATP?

Electron transport chain

Krebs cycle

Glycolysis

14 / 40

What is the role of NADH in cellular respiration?

Carries high-energy electrons to the electron transport chain

Produces ATP directly

Serves as a structural component

15 / 40

What is the term for the process of converting light energy into chemical energy in photosynthetic organisms?

Oxidative phosphorylation

Photosynthesis

Cellular respiration

16 / 40

How many ATP molecules are produced per NADH during oxidative phosphorylation?

2.5 ATP

1 ATP

3 ATP

17 / 40

What is the net gain of ATP molecules produced in glycolysis?

4 ATP

6 ATP

2 ATP

18 / 40

What is the primary pigment responsible for capturing light energy in photosynthesis?

Carotenoids

Chlorophyll

Phycocyanin

19 / 40

Where does the Krebs cycle take place in eukaryotic cells?

Endoplasmic Reticulum

Mitochondrial matrix

Cytoplasm

20 / 40

What is the term for the process of converting carbon dioxide into organic compounds during photosynthesis?

Carbon fixation

Photophosphorylation

Oxidative phosphorylation

21 / 40

What is the main product of the Krebs cycle?

Carbon dioxide

NADH and FADH2

ATP

22 / 40

What is the purpose of the electron transport chain in cellular respiration?

Generate pyruvate

Break down glucose

Create a proton gradient for ATP synthesis

23 / 40

What is the role of the thylakoid membrane in photosynthesis?

Location of the light-dependent reactions

Site of the Calvin cycle

Synthesis of glucose

24 / 40

What is the function of FADH2 in cellular respiration?

Carries electrons to the electron transport chain

Serves as a structural component

Produces ATP directly

25 / 40

What is the role of oxygen in cellular respiration?

Produces ATP directly

Initiates glycolysis

Final electron acceptor in the electron transport chain

26 / 40

What is the first stage of cellular respiration?

Electron transport chain

Glycolysis

Krebs cycle

27 / 40

What is the term for the process of splitting glucose into two molecules of pyruvate?

Krebs cycle

Glycolysis

Oxidative phosphorylation

28 / 40

What is the primary function of the electron transport chain?

Produce pyruvate

Breakdown glucose

Generate a proton gradient for ATP synthesis

29 / 40

What is the function of the proton gradient in chemiosmosis?

Produce pyruvate

Breakdown glucose

Drive ATP synthesis

30 / 40

In which cellular organelle does oxidative phosphorylation occur?

Chloroplasts

Mitochondria

Nucleus

31 / 40

What is the term for the fluid-filled space inside the chloroplast where the Calvin cycle takes place?

Granum

Thylakoid space

Stroma

32 / 40

What is the final electron acceptor in the electron transport chain?

Oxygen

Carbon dioxide

NAD+

33 / 40

What is the final product of the Calvin cycle in photosynthesis?

Oxygen

Glucose

ATP

34 / 40

Which stage of cellular respiration involves the citric acid cycle?

Electron transport chain

Krebs cycle

Glycolysis

35 / 40

Where does photosynthesis take place in plant cells?

Chloroplasts

Mitochondria

Nucleus

36 / 40

What is the role of NAD+ in cellular respiration?

Donates electrons and becomes oxidized to NAD+

Accepts electrons and becomes reduced to NADH

Serves as a structural component

37 / 40

What is the primary function of the Calvin cycle in photosynthesis?

Synthesize glucose from carbon dioxide

Produce ATP and NADPH

Capture light energy

38 / 40

What is the primary function of ATP in cells?

DNA synthesis

Energy currency for cellular activities

Structural support

39 / 40

Which molecule is often called the "energy currency" of the cell?

ATP

FADH2

NADH

40 / 40

What is the term for the metabolic pathway that converts glucose into pyruvate?

Glycolysis

Krebs cycle

Electron transport chain

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