Bio-energetic – Online MCQs Test – Biology MCAT

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

2. Carotenoids absorb all colors of light EXCEPT

red

green

yellow

blue

3. All of the following are correct about cell respiration EXCEPT

All plant and animal cells carry out respiration all the time

Oxygen molecules are pumped across the cristae membrane to the outer compartment

It is an oxidative process

It consists of glycolysis, Kreb’s cycle, and the electron transport chair

4. All of the following statements about photolysis are correct EXCEPT

it provides hydrogen for carbon fixation

it occurs during the light-independent reaction

it supplies electrons to chlorophyll a

it releases oxygen

5. Number of ATP generated by one Krebs cycle at substrate level is:

4 ATP

2 ATP

3 ATP

1 ATP

6. Reducing power synthesized in aerobic respiration is converted into assimilatory power through:

Oxidative phosphorylation

Photophosphorylation

Glycolysis

Krebs cycle

7. Glycolysis starts with

Phosphorylation of glucose

Splitting of glucose

Reduction of glucose

Hydrolysis of glucose

8. The high energy electrons from the reaction center of photosystem are trapped by:

Primary electron acceptor

Oxidized coenzyme

Accessory pigments

Electron transport chain

9. For Krebs cycle enzymes are located in

Cytosol

Lysosome

Chloroplast

Milochondria

10. Which organelle extracts energy from food molecules and uses it to make ATP?

Golgi

Nucleus apparatus

Ribosome

Mitochondrion

11. Which organic acid is produced by glycolysis?

Pyruvic acid

Phosphoric acid

carbonic acid

Succinic acid

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

Reduction of NADP

Reduction of CO₂

Breakdown of water

Phosphorylation of ADP

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

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

3rd step

1st step

2nd step

1st and 3rd steps

15. The molecular mechanism of oxidative phosphorylation takes place in conjunction with respiratory chain in the:

Inner membrane of mitochondrion

Outer membrane of mitochondrion

Matrix of mitochondrion

Inner side of thylakoid membrane

16. In glycolysis 2 PG is converted into PEP by:

Hydration

Dehydration

Reduction

Oxidation

17. All of the following are iron containing electron carriers except:

Plastoquinone

Cytochrome

Ferridoxin

Plastocyanin

18. Choose the pair that is correctly matched.

Electron transport chain-cristae membrane

Kreb’s cycle-cytoplasm

Electron transport chain-outer compartment of mitochondria

Glycolysis-cristae membrane

19. In respiration. ATP synthesis is called:

Oxidative phosphorylation

All of these

Z-scheme

Cellular phosphorylation

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

Bodies called pro-plaslids

The nucleus

The vacuole

The cell wall

Bio-energetic-Medical College Admission Test Preparation Notes