Competitive Exams: Zoology MCQs (Practice_Test 44 of 112)

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1. The pollen basket in honeybee is located at the

   1. lower side of the abdomen

   2. tip of antenna

   3. tarsus of first leg

   4. tibia of third leg

2. Consider the following statements: The most important role of folic acid in promoting growth is through

   1. conversion of decarboxylated pyruvic acid into acetyl C0A

   2. synthesis of purines and thymine essential for DNA synthesis

   3. calcium deposition in bones

   Which of the statements given above is/are correct?

   1. 1 and 2 only

   2. 2 only

   3. 1 and 3 only

   4. 3 only

3. Which one of the following sensations is not generated by impulses initiated in naked nerve endings?

   1. Touch

   2. Pain

   3. Cold

   4. Taste

4. Match List-I (Organism) with List-II (Excretion) and select the correct answer using the code given below the

   List-I	List-II
   Shark Lizard Rat	Uric acid Urea Ammonia

   • A
   • B
   • C
   1. • 3
      • 1
      • 2
   2. • 2
      • 1
      • 3
   3. • 3
      • 2
      • 1
   4. • 1
      • 3
      • 2

5. In glycolysis, which enzyme acts on 2-phosphoglycerate to form phosphoenol pyruvate?

   1. Aldolase

   2. Enolase

   3. Phosphoglycerokinase

   4. Phosphoglyceromutase

6. In the vertebrates, the hormones which control osmoregulation are

   1. vasopressin and thyrotropin

   2. aldosterone and corticotropin

   3. thyrotropin and corticotropin

   4. asopressin and aldosterone

7. Which one of the following vitamins is the precursor of coenzyme A?

   1. Pantothenic acid

   2. Pyridoxamine

   3. Riboflavin

   4. Thiamine

8. Nicotinic acid can be synthesized biologically from

   1. glutamic acid

   2. aspartic acid

   3. tyrosine

   4. tryptophan

9. Which reference to mitochondrial Electron Transport Chain which one of the following statements is correct?

   1. Ubiquinone can carry two electrons and two protons simultaneously

   2. The electrons that each molecule of NADH contributes to the mitochondrial electron transport chain provide enough power to create two ATPs

   3. The contribution of FADH2 provides enough power for the production of three ATPs

   4. Cytochrome b and cytochrome c1 are parts of an enzyme complex known as cytochrome oxidase

10. Consider the following statements

    1. ATP cannot be stored in the cell.

    2. ATP can be moved from one cell to another.

    3. NAD + picks up two electrons at once.

    Which of the statements given above is/are correct?

    1. 1 only

    2. 2 and 3 only

    3. 1 and 3 only

    4. 1, 2 and 3

11. Which one of the following hormones controls gluconeogenesis?

    1. Thyroxine

    2. Insulin

    3. Cortisol

    4. Glucagon

12. Dietary carotenes and carotenoids are absorbed and transported in the plasma of higher mammals by

    1. albumins

    2. globulins

    3. lipoproteins

    4. glycoproteins

13. Consider the following conditions

    1. Enlarged thyroid

    2. Protruding eyeballs

    3. Decreased blood sugar

    Which of the above is/are the symptom (s) of Graves disease?

    1. 1 and 2 only

    2. 2 only

    3. 1 and 3 only

    4. 1, 2 and 3

14. Consider the following statements In citric acid cycle

    1. The generation of ATP is done at two steps

    2. NAD is reduced to NADH at two steps

    3. FAD + is reduced to FADH2 at one step

    Which of the statements given above is/are correct?

    1. 1 and 2 only

    2. 3 only

    3. 1 and 3 only

    4. 1, 2 and 3

15. Proteins also release the energy in our body but before that their deamination is carried out in

    1. spleen

    2. muscles

    3. lungs

    4. liver