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NEET Exam  >  NEET Tests  >  Biology Class 11  >  Test: Introduction to Respiration, Glycolysis & Fermentation - NEET MCQ

Test: Introduction to Respiration, Glycolysis & Fermentation - NEET MCQ


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15 Questions MCQ Test Biology Class 11 - Test: Introduction to Respiration, Glycolysis & Fermentation

Test: Introduction to Respiration, Glycolysis & Fermentation for NEET 2025 is part of Biology Class 11 preparation. The Test: Introduction to Respiration, Glycolysis & Fermentation questions and answers have been prepared according to the NEET exam syllabus.The Test: Introduction to Respiration, Glycolysis & Fermentation MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Introduction to Respiration, Glycolysis & Fermentation below.
Solutions of Test: Introduction to Respiration, Glycolysis & Fermentation questions in English are available as part of our Biology Class 11 for NEET & Test: Introduction to Respiration, Glycolysis & Fermentation solutions in Hindi for Biology Class 11 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Introduction to Respiration, Glycolysis & Fermentation | 15 questions in 10 minutes | Mock test for NEET preparation | Free important questions MCQ to study Biology Class 11 for NEET Exam | Download free PDF with solutions
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 1
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Which of the following statements about gaseous exchange in plants is correct?

Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 1
Plants lack specialized respiratory organs, and each part (roots, stems, leaves) manages its own gas exchange through structures like stomata and lenticels.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 2
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Why is oxygen availability not a problem in photosynthesizing cells?

Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 2
During photosynthesis, oxygen is a byproduct generated within the cells themselves, making oxygen availability sufficient.
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Test: Introduction to Respiration, Glycolysis & Fermentation - Question 3
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Which enzyme catalyzes the conversion of sucrose into glucose and fructose in plants?

Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 3
Sucrose is broken down into glucose and fructose by the enzyme invertase, allowing entry into glycolysis.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 4
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At which step of glycolysis is NADH + H⁺ generated?
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 4
NADH + H⁺ is formed when 3-phosphoglyceraldehyde (PGAL) is oxidized to 1,3-bisphosphoglycerate.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 5
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What is the total ATP gain during glycolysis from one molecule of glucose?
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 5
Glycolysis directly synthesizes 4 ATP molecules, but 2 ATP are used in early steps, resulting in a net gain of 2 ATP per glucose molecule.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 6
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What is the role of lactate dehydrogenase in animal cells during intense exercise?
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 6
Lactate dehydrogenase catalyzes the reduction of pyruvate to lactic acid under anaerobic conditions, regenerating NAD⁺.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 7
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Why does fermentation yield less energy compared to aerobic respiration?
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 7
Fermentation involves partial oxidation of glucose, leading to much less ATP production compared to complete oxidation in aerobic respiration.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 8
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Which enzymes are responsible for alcoholic fermentation in yeast?
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 8
Alcoholic fermentation involves pyruvic acid decarboxylase and alcohol dehydrogenase, converting pyruvate to ethanol and CO₂.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 9
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Which of the following is true about glycolysis?
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 9
Glycolysis is a universal pathway occurring in the cytoplasm of all living cells and does not require oxygen.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 10
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Why can bulky plants manage gas exchange without specialized organs?
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 10
Even in large plants, living cells are near the surface, diffusion distances are small, and lenticels help in gaseous exchange.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 11
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Assertion (A): Glycolysis occurs in the cytoplasm of all living organisms.
Reason (R): Glycolysis is an anaerobic pathway that does not require oxygen.
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 11
Glycolysis is a universal, cytoplasmic pathway that does not require oxygen, making R the correct explanation of A.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 12
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Assertion (A): Fermentation releases less than 7% of the energy stored in glucose.
Reason (R): Fermentation involves complete oxidation of glucose.
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 12
Fermentation releases very little energy because it involves incomplete oxidation of glucose, not complete oxidation.
Test: Introduction to Respiration, Glycolysis & Fermentation - Question 13
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Match the following glycolytic enzymes with their functions:​Options:
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 13

Hexokinase phosphorylates glucose, invertase breaks sucrose, pyruvic acid decarboxylase aids ethanol formation, and lactate dehydrogenase reduces pyruvate to lactic acid.

Test: Introduction to Respiration, Glycolysis & Fermentation - Question 14
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Match the pathway with its characteristics

Column I (Pathway) Column II (Characteristic)
a. Glycolysis i. Occurs in cytoplasm; partial oxidation of glucose
b. Alcoholic fermentation ii. Produces lactic acid under anaerobic conditions
c. Lactic acid fermentation iii. Produces ethanol and CO2 in anaerobic organisms
d. Aerobic respiration iv. Complete oxidation of glucose in mitochondria
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 14

Glycolysis occurs in cytoplasm, alcoholic fermentation produces ethanol, lactic acid fermentation produces lactic acid, and aerobic respiration occurs in mitochondria.

Test: Introduction to Respiration, Glycolysis & Fermentation - Question 15
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Match the glycolytic intermediates with the correct carbon number:
Detailed Solution for Test: Introduction to Respiration, Glycolysis & Fermentation - Question 15

Glucose and fructose-1,6-bisphosphate are 6-carbon compounds, while pyruvic acid and glyceraldehyde-3-phosphate are 3-carbon intermediates.

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