Bio-energetic – Online MCQs Test – Biology MCAT

1. The role of oxygen in aerobic respiration is

As the final proton and electron acceptor in the electron transportchain

To transport electrons in glycolysis

Most important in the Krebs cycle

To transport CO₂

2. All of the following are correct about ATP synthase EXCEPT

it spins like a turbine

it is a molecule located within the cristae membrane

it binds a phosphate to a molecule of ADP

it is an important component of glycolysis

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

Ionizing agent

Catalytic agent

Oxidizing agent

Reducing agent

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

Release of CO₂

Release of H₂O

Hydrolysis of ATP

Phosphorylation of glucose

5. The sugar formed from photosynthesis is

PCAL

glucose

pyruvic acid

ATP

6. The enzyme RuBP helps in the capturing of

Hydrogen

O₂

CO₂

AII of them

7. Choose the pair that is correctly matched.

Electron transport chain-outer compartment of mitochondria

Glycolysis-cristae membrane

Kreb’s cycle-cytoplasm

Electron transport chain-cristae membrane

8. In chloroplasts, chlorophyll is present in the

Strom

Inner membrane

Thylakoids

Outer membrane

9. It is energy yielding step of glycolysis:

3-phosphoglycerate into 3-phosphglycerate

Glucose into glucose 6-phosphate

Fructose 6-phosphate into fructose 1 ,6-bisphosphate

1 ,3-bisphosphoglycertate into 3-phosphoglycerate

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

The cell wall

Bodies called pro-plaslids

The vacuole

The nucleus

11. It is the most abundant and most important photosynthetic pigment in plants:

Chlorophyll b

Chlorophyll a

Carotenes

Xanthophylls

12. Which of the following is not a photosynthetic pigment”

Bromothymol blue

Chlorophyll a

Chlorophyll

Carotenoid

13. During Calvin cycle, how many G3P molecules are involved to regenerate three molecules of RuBP:

14. The first action spectrum was obtained by a:

German biologist

Spanish biologist

French biologist

English biologist

15. What happens to water in photosynthesis?

Oxidation of carbon dioxide

Oxidation of water

Reduction of glucose

Reduction of water

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

17. It is found in all photosynthetic organisms, EXCEPT photosynthetic bacteria:

Chlorophyll – b

Carotenoids

Bacteriochlorophyll

Chlorophyll – a

18. Number of ATP generated when one molecule of NADH enters in respiratory chain is:

19. For Krebs cycle enzymes are located in

Cytosol

Chloroplast

Milochondria

Lysosome

20. The step/s of glycolysis that consume/s ATP/s, is/are:

2nd step

3rd step

1st and 3rd steps

1st step

Bio-energetic-Medical College Admission Test Preparation Notes