MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The stage upto which glycolysis and fermentation is common [Bihar 2005] |
| A. | Dihydroxy acetone |
| B. | 3-phosphoglyceraldehyde |
| C. | Pyruvate |
| D. | Glucose-6-phosphate |
| Answer» D. Glucose-6-phosphate | |
| 2. |
In glycolysis, during oxidation electrons are removed by [CBSE PMT 2004] |
| A. | \[NA{{D}^{+}}\] |
| B. | Molecular oxygen |
| C. | ATP |
| D. | Glyceraldehyde-3-phosphate |
| Answer» B. Molecular oxygen | |
| 3. |
The end product of glycolysis is [MHCET 2001] |
| A. | Acetyl Co-A |
| B. | Citric acid |
| C. | Pyruvic acid |
| D. | Fumaric acid |
| Answer» D. Fumaric acid | |
| 4. |
What is the other name of glycolysis [MP PMT 1986; CET Pune 1998; CPMT 1998] |
| A. | EMP pathway |
| B. | TCA pathway |
| C. | HMS pathway |
| D. | None of the above |
| Answer» B. TCA pathway | |
| 5. |
Besides the net gain of 2 ATP molecules in glycolysis which other molecules are simultaneously formed [BHU 1986; MP PMT 1988; CPMT 1995] |
| A. | \[FAD{{H}_{2}}\] |
| B. | \[NADP{{H}_{2}}\] |
| C. | \[NAD{{H}_{2}}\] |
| D. | \[FAM{{H}_{2}}\] |
| Answer» B. \[NADP{{H}_{2}}\] | |
| 6. |
Which of the following is necessary for respiration in plants [CPMT 1986] |
| A. | Carbon dioxide |
| B. | Oxygen |
| C. | Chlorophyll |
| D. | Light |
| Answer» C. Chlorophyll | |
| 7. |
Rubbing effect on leaf causes |
| A. | Increased respiration |
| B. | Decreased respiration |
| C. | No effect |
| D. | Respiration stops |
| Answer» B. Decreased respiration | |
| 8. |
The glycollate metabolism occurs in [MP PMT 1995, 2000, 01; RPMT 1999; BHU 2001; AIIMS 2001; BVP 2003] |
| A. | Lysosomes |
| B. | Ribosomes |
| C. | Glyoxysomes |
| D. | Peroxisomes |
| Answer» E. | |
| 9. |
Which among the following is the most appropriate reason for storing green coloured apples at low temperature (Refrigerator) [AIIMS 1980; JIPMER 1983; AFMC 1984, 85] |
| A. | The rate of photosynthesis is reduced |
| B. | Respiration and photosynthesis are completely inhibited |
| C. | The rate of respiration is reduced |
| D. | The rate of photosynthesis and respiration are reduced |
| Answer» D. The rate of photosynthesis and respiration are reduced | |
| 10. |
Assertion : Substrate level phosphorylation is present in glycolysis. Reason : Substrate level phosphorylation causes synthesis of ATP. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 11. |
Assertion : Terminal oxidation occurs both in aerobic and anaerobic conditions. Reason : Terminal oxidation occurs at terminal step of respiration. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 12. |
Assertion : In alcoholic fermentation, the hexose molecule is converted into glucose and fructose. Reason : Alcoholic fermentation is anaerobic respiration brought about by enzyme zymase. [AIIMS 1996] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 13. |
The incomplete breakdown of sugars in anaerobic respiration results in the formation of [CPMT 1975, 78, 84; MP PMT 1987, 89, 90] |
| A. | Fructose and water |
| B. | Glucose and \[C{{O}_{2}}\] |
| C. | Alcohol and\[C{{O}_{2}}\] |
| D. | Water and\[C{{O}_{2}}\] |
| Answer» D. Water and\[C{{O}_{2}}\] | |
| 14. |
Organism which can respire in absence of \[{{O}_{2}}\] is [MHCET 2003] |
| A. | Chlorella |
| B. | Solanum |
| C. | Saccharum |
| D. | Saccharomyces |
| Answer» E. | |
| 15. |
What is the total gain of energy during anaerobic respiration [CPMT 1987] |
| A. | One molecule of ATP |
| B. | Two molecules of ATP |
| C. | Four molecules of ATP |
| D. | Eight molecules of ATP |
| Answer» C. Four molecules of ATP | |
| 16. |
Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzymes [AMU 1986] |
| A. | Carboxylase |
| B. | Dehydrogenase |
| C. | Decarboxylase and dehydrogenase |
| D. | Phosphatase |
| Answer» D. Phosphatase | |