Biology

1. Apoenzyme is

Lipid

Sugar

Vitamin

Protein

Question 1 of 15

2. The figure given below show three velocity substrate concentration curves for an enzyme reaction. What do the curves a, b and c depict respectively?

(a) a – normal enzyme reaction

b – competitive inhibition

c – non-competitive inhibition

(b) a – enzyme with an allosteric modulator added.

b – normal enzyme activity

c – competitive inhibition

(c) a – enzyme with an allosteric stimulator

b – competitive inhibitor added

c – normal enzyme reaction

(d)a – normal enzyme reaction.

b – non-competitive inhibitor added

c – allosteric inhibitor added

Question 2 of 15

3. Gamma globulins are synthesized inside

Liver

Bone marrow

Kidney

Lymph and lymphoid tissues

Question 3 of 15

4. Alpha-keratin is a protein, present in

Eggs

Skin

Lymph

Blood

Question 4 of 15

The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme greengram-phosphatase. What does the graph indicate?

At higher substrate concentration the pH increases

Formation of an enzyme-substrate complex

The rate of enzyme reaction is directly proportional to the substrate concentration

Presence of an enzyme inhibitor in the reaction mixture

Question 5 of 15

6. Which statement is true?

Cytosine has 3 nitrogen atoms

Guanosine has 3 nitrogen atoms

Uracil has 5 nitrogen atoms

Adenine has 4 nitrogen atoms

Question 6 of 15

7. Michaelis constant K_m is equal to

K₂ – K₃/K₁

K₁/K₂ – K₃

K₁ x K₂/ K₃

K₂ + K₃/K₁

Question 7 of 15

8. Which of the following gives Fehling’s test?

Sucrose

Glucose

Pectin

Cellulose

Question 8 of 15

9. An example of competitive inhibition of an enzyme is the inhibition of

Cytochrome oxides by cyanide

Hexokinase by glucose-6-phosphate

Carbonic anhydrase by carbon dioxide

Succinic dehydrogenase by malonic acid

Question 9 of 15

10. Which of the following set of three items are not true as each set belongs to the category mentioned against them

Optic nerve, occulomotor, vagus-Sensory nerves

Rennin, helicase and Hyaluronidase-Enzyme

Myosin, oxytocin and gastrin – Hormones

Lysine, glycine, thiamine-Amino acids

Question 10 of 15

11. Proteins are

Polyamides

Polysaccharides

Polynuckeotides

Polyglycol

Question 11 of 15

12. Which one of the following statements regarding starch and cellulose is not correct?

Both of them are of plant origin.

Both of them are made up of glucose molecules

Both of them give colour with iodine.

Both of them are polymers

Question 12 of 15

13. Which is the derivative of amino acid?

Estrogen

Progesterone

All of these

Epinephrine

Question 13 of 15

14. The total number of nitrogenous bases in human genome is estimated to be about

35 thousand

35 million

3.1 billion

3.5 million

Question 14 of 15

15. Which of the following contain β-1, 4 linkage?

Sucrose

Maktise

Fructose

Lactose

Question 15 of 15

Test Name	Micro & Macro molecules Test
Subject	Biology
Test Type	MCQs
Total Question	15
Total Marks	30
Total Time	15 Mints
Test Help For	Biology Subject Test Prep. All Admission Test Preparation. All Medical Colleges Admission Test GRE Subject Test. Science Test preparation.

Test By Subject	Biology
Test By Topics	Biology Subject

Test Advisor

Micro Macro molecules Test Online MCQs

Micro & Macro molecules Test Online MCQs

Biology

Leave a Reply Cancel reply