Bio-energetic – Online MCQs Test – Biology MCAT

1. From recent studies, it has been found that pre-existing plastids arise from

The vacuole

The nucleus

The cell wall

Bodies called pro-plaslids

2. Which is a wasteful phenomenon?

Photorespiration

Respiration

Photosynthesis

None of these

3. During photosynthesis, light strikes with chlorophyll and its electrons move to higher energy state, After loss of electrons, chlorophyll becomes a very strong

Oxidizing agent

Catalytic agent

Reducing agent

Ionizing agent

4. Each NADH molecule carrying protons to the electron transport chain can produce molecules of ATP

5. Chlorophylls absorb mostly violet-blue wavelengths ________ and red wavelength _______ respectively:

390 – 430nm, 500 – 600nm

670 – 700nm, 390 – 430nm

670 – 700nm, 500 – 600nm

390 – 430nm, 670 – 700nm

6. The stroma of chloroplast contains most of the enzymes to produce:

ATP

Carbohydrates

Carbon dioxide

Nucleic acids

7. All of the following steps of photosynthesis involve direct use of light except:

Phosphorylation of ADP

Reduction of NADP

Breakdown of water

Reduction of CO₂

8. How many CO₂ molecules are released when 1 molecule of glucose is completely in aerobic respiration?

9. It is energy yielding step of glycolysis:

Fructose 6-phosphate into fructose 1 ,6-bisphosphate

3-phosphoglycerate into 3-phosphglycerate

1 ,3-bisphosphoglycertate into 3-phosphoglycerate

Glucose into glucose 6-phosphate

10. Oxygen released during photosynthesis comes from:

Carbon dioxide

Chlorophyll

Water

Carbohydrate

11. Total production of ATP during glycolysis from one glucose molecule is:

12. Highest number of enzymes are found in:

Chloroplasts

Golgi complex

None of these

Mitochondria

13. The oxygen that plants give of

comes from the light-independent reaction of photosynthesis

is a by-product of respiration

comes from the light-dependent reactions of photosynthesis

comes from carbon dioxide that plants absorb

14. The sugar formed from photosynthesis is

PCAL

pyruvic acid

ATP

glucose

15. Which of me following probably evolved first?

chemiosmosis

glycolysis

the electron transport chair

the Krebs cycle

16. All of the following occur during glycolysis, EXCEPT:

Release of CO₂

Phosphorylation of glucose

Hydrolysis of ATP

Release of H₂O

17. It correctly represents the end products (net) of glycolysis other than pyruvate:
ATP NADH HO

2 – 4 – 2

2 – 2 – 2

4 – 4 – 4

18. Pyruvate produced during glycolysis proceeds further in presence of oxygen through

All of these

Aerobic respiration

Lactic acid fermentation

Alcoholic fermentation

19. Glycolysis literally means splitting of:

Carbohydrates

Glucose

Sucrose

Sugar

20. Which of the following is a waste product of aerobic cell respiration?

Carbon dioxide

ATP

Water

Water and Carbon dioxide

Bio-energetic-Medical College Admission Test Preparation Notes