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Respiration in Plants Practice Questions

NEET · Biology · 988 free MCQs with instant results and detailed explanations.

988
Total
196
Easy
444
Medium
348
Hard

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Topics in Respiration in Plants

Glycolysis 193
ETC 202
Fermentation 198
Respiratory Quotient 194
TCA Cycle 201

Sample Questions from Respiration in Plants

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Q1
Easy
What is the primary purpose of glycolysis in cellular respiration?
A. To produce glucose
B. To generate ATP
C. To release oxygen
D. To synthesize fatty acids
Show Answer & Explanation
Correct Answer: B
Glycolysis primarily converts glucose into pyruvate, producing ATP in the process, which is crucial for energy.
Q2
Easy
In glycolysis, which molecule is broken down to initiate the process?
A. Fructose
B. Glucose
C. Lactate
D. Pyruvate
Show Answer & Explanation
Correct Answer: B
Glycolysis begins with the breakdown of glucose to produce pyruvate, making glucose the key initiating molecule.
Q3
Easy
How many ATP molecules are produced during glycolysis from one glucose molecule?
A. 4 ATP
B. 2 ATP
C. 6 ATP
D. 8 ATP
Show Answer & Explanation
Correct Answer: B
Glycolysis produces a net gain of 2 ATP molecules from each glucose molecule processed.
Q4
Medium
What is the net ATP yield from one molecule of glucose during glycolysis?
A. 2 ATP
B. 4 ATP
C. 6 ATP
D. 38 ATP
Show Answer & Explanation
Correct Answer: A
During glycolysis, 2 ATP are used and 4 ATP are produced, resulting in a net gain of 2 ATP molecules.
Q5
Medium
Which of the following enzymes is NOT involved in glycolysis?
A. Hexokinase
B. Phosphofructokinase
C. Pyruvate kinase
D. Citrate synthase
Show Answer & Explanation
Correct Answer: D
Citrate synthase is involved in the Krebs cycle and not in glycolysis, while the others are key enzymes in the glycolytic pathway.
Q6
Medium
In glycolysis, glucose is converted into which of the following molecules?
A. Lactate
B. Acetyl-CoA
C. Pyruvate
D. Oxaloacetate
Show Answer & Explanation
Correct Answer: C
Glycolysis converts glucose into two molecules of pyruvate, which can further enter the Krebs cycle depending on the presence of oxygen.
Q7
Medium
Which of the following processes occurs in the cytoplasm of plant cells during glycolysis?
A. Oxidative phosphorylation
B. Krebs cycle
C. Fermentation
D. Conversion of glucose to pyruvate
Show Answer & Explanation
Correct Answer: D
Glycolysis takes place in the cytoplasm of plant cells, where glucose is converted to pyruvate, while other processes occur in different cellular locations.
Q8
Hard
In glycolysis, which of the following is the end product formed after the conversion of glucose?
A. Lactic Acid
B. Ethanol
C. Pyruvate
D. Acetyl-CoA
Show Answer & Explanation
Correct Answer: C
The end product of glycolysis is pyruvate, which is formed after the breakdown of glucose into two three-carbon molecules.
Q9
Hard
How many ATP molecules are produced net in the glycolytic pathway from one molecule of glucose?
A. 2
B. 4
C. 6
D. 8
Show Answer & Explanation
Correct Answer: A
Glycolysis produces a total of 4 ATP molecules, but 2 ATP molecules are consumed, leading to a net production of 2 ATP.
Q10
Hard
Which enzyme catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate in glycolysis?
A. Hexokinase
B. Phosphofructokinase
C. Aldolase
D. Enolase
Show Answer & Explanation
Correct Answer: B
Phosphofructokinase is the key regulatory enzyme that catalyzes the phosphorylation of fructose-6-phosphate to fructose-1,6-bisphosphate in glycolysis.

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Respiration in Plants — NEET Biology Practice Questions Online

This page contains 988 practice MCQs for the chapter Respiration in Plants in NEET Biology. The questions are organized by difficulty — 196 easy, 444 medium, 348 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 5 topics, giving you comprehensive coverage of the entire chapter.