OBJECTIVES Of Harvest Energy Stored In Nutrients
Multiple Choice Questions MCQs:
Four options are given at the end of each statement. You should encircle.one option from them.
- The first step of respiration is:
(a) ETC (b) Krebs cycle (c) Glycolysis (d) Fermentation
- The end product of glycolysis is:
(a) Citric acid (b) PAGL (c) Phosophoenol (d) Pyruvate
- The enzyme which control the phosphorylation of glucose is:
(a) Mutase (b) Hexokinase (c) Lipase (d) Lactase
- The total number of ATP produced during glycolysis is:
(a) 2 (b) 4 (c) 3 (d) 6
- The total number of ATP used during glycolysis is:
(a) 2 (b) 4 (c) 3 (d) 6
- The end product of fermentation in higher animals is:
(a) Alcohol (b) Lactic acid (c) Pyruvate • (c) Oxaloacetate
- Which of the following molecule is used during fermentation?
(a) ATP (b) NADH • (c) NAD (d) FADH
- Which of the following molecule is produced during fermentation?
(a) ATP (b) NADH (c) NAD (d) FADH
- Which of the following compound is produced during Krebs cycle?
(a) Citric acid (b) PAGL (c) Phosophoenol (d) Pyruvate
10. Which of the following compound enter into Krebs cycle:
(a) Citric acid (b) PAGL (c) Acetyl CoA (d) Pyruvate
11.The mechanism of oxidative phosphorylation is:
(a) ETC (b) Photosynthesis (c) Chemiosmosis (d) None
12.The net production of ATP from the respiration of one molecule of glucose is:
(a) 34 (b) 36 (c) 38 (c) 40
Ans:
1. (c 2. (d) 3. (c) 4. (b) 5. (a) 6. (b) 7. (b) 8. (a) 9 (a) 10. (c)11. (c) 12. ( )
Fill in the blanks
- Six-carbon glucose • molecule is broken down into two molecules_______________.
- This electron transfer is called an oxidation-reduction reaction, or_______________reaction.
- The molecule that accepts electrons is _____________.
- The molecule that gives up electrons is._________________.
- Some organisms use to keep glycolysis functioning under_________________ conditions.
- Obligative anaerobic organisms include certain types of_______________ . These organisms survive only in the complete absence of molecular oxygen.
- The pyruvate is entered into Krebs cycle or_______________ cycle.
- _______________is a series of reactions in . which •the pyruvate from glycolysis is oxidized to CO2.
- The amine group is removed to yield ammonia. This process is called a_______________.
- Glucose enters the cell. It is phosphorylated by the enzyme_______________.
Ans:
1. hexokinase 2. pyruvate 3. redox
4. reduced 5. oxidized 6. anaerobic
7. bacteria 8. citric acid 9. Krebs cycle
10. deamination
Short Questions
- Differentiate between aerobic and anaerobic respiration.
Ans: Aerobic respiration takes place in the presence of free oxygen. Anaerobic respiration takes place in the absence of free oxygen. This process called fermentation.
- Differentiate between oxidation and reduction.
Ans: The molecule that gives up electrons is oxidized. Thus, oxidation is the loss of electrons. The molecule that accepts electrons is reduced. Thus. reduction is the gain of electrons.
- What are Obligative anaerobic?
Ans: Obligative anaerobic organisms include certain types of bacteria. These organisms survive only in the complete absence of molecular oxygen.
- What are Facultative anaerobic?
Ans: Facultative anaerobic organisms and tissues include certain bacteria, yeasts, and cells. These organisms can ferment nutrients in absence of oxygen. It also generates some ATP.
- Name the electron carrier used in Krebs cycle.
Ans: Nicotinamide adenine dinucleotide (NAD) and Flavin adenine dinucleotide (FAD).
- What is electron transport chain?
Ans: The collection of molecules embedded in the inner membrane of the mitochondrion is called electron transport chain.
- What is deamination?
Ans: The amine group is removed to yield ammonia. This process is called a deamination.
True/ False (For Punjab University only)
Marks are True or False statement. Give correct statement if false ‘ Statement
. glucose.
Ans: |
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Statement | T/F | Correct Statement | |
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F | 36 molecules of ATP is produced during oxidation of one molecule of glucose. | |
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T | ||
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T | ||
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F | Obligativ anaerobic
organisms include certain types of bacteria. |
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T | ||
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T | ||
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- Subjective And Short Questions For Respiration
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- THE ENERGY SCORE FOR AEROBIC RESPIRATION
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