3 Phases of Aerobic Respiration

Q.

How is oxygen used in cellular respiration?

Q.

During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the

1. cytoplasm

2. chloroplast

3. mitochondria

4. Golgi body

Q. The enzymes of glycolytic pathway are found in _____.

1. Peroxisome
2. Cytochrome
3. Mitochondria
4. Cytoplasm

Q.

Which metabolic pathway is common to both cellular respiration and fermentation?

Q. Assertion: Glycolysis is the only process in aerobic respiration.
Reason: It is partial oxidation of glucose that occurs in the cytoplasm of the cell of all living organisms.

1. Both assertion and reason are correct statements and reason is the correct explanation
2. Both assertion and reason are correct statements but the reason is incorrect explanation
3. Assertion is an incorrect statement but the reason is the correct statement
4. Both are incorrect statements

Q. After the entry of pyruvic acid in the mitochondrial matrix, which of the following does not take place?

1. oxidative -decarboxylation
2. ATP mediated phosphorylation
3. oxidation
4. decarboxylation

Q.

The correct sequence for aerobic metabolic breakdown of glucose is

1. glycolysis--preparatory reaction--cirtric acid cycle--electron transport system

2. preparatory reaction--glycolysis--electron transport--citric acid cycle

3. light reactions--electron replacement--ATP production--calvin cycle

4. electron transport system--citric acid cycle--preparatory reaction--glycolysis

Q.

Define the site of cellular respiration? Describe the mechanism of cellular respiration.

Q. What happens to all the energy released during respiration?

1. It gets released inside the cell
2. It gets stored in the form of high energy chemical intermediates i.e., $\text{ATP, NADH}$ and $FAD{H}_2$
3. It gets dissipated outside the cell
4. Fate of released energy cannot be determined

Q. Comment on the simplicity or complexity of aerobic respiration.

1. It is completed in a single step
2. It is a multi step reaction
3. It is difficult to determine the complexity
4. None of these

Q. Assertion: Glycolysis is the only process in aerobic respiration.
Reason: It is partial oxidation of glucose that occurs in the cytoplasm of the cell of all living organisms.

1. Both assertion and reason are correct statements and reason is the correct explanation
2. Both assertion and reason are correct statements but the reason is incorrect explanation
3. Assertion is an incorrect statement but the reason is the correct statement
4. Both are incorrect statements

Q.

Match the following columns
$\begin{array}{cc}ColumnI& ColumnII\\ A.Molecularoxygen& 1.\alpha -ketoglutaricacid\\ B.Electronacceptor& 2.Hydrogenacceptor\\ C.Pyruvatedehydrogenase& 3.Cytochrome-C\\ D.Decarboxylation& 4.AcetylCo-A\end{array}$

1. A - 2, B - 3, C - 4, D - 1

2. A - 3, B - 4, C - 2, D - 1

3. A - 2, B - 1, C - 3, D - 4

4. A - 4, B - 3, C - 1, D - 2

Q. Oxygen during aerobic respiration is utilised during

1. Photophosphorylation
2. Glycolysis
3. Oxidative phosphorylation
4. Kreb's cycle

Q.

Under what circumstances lactate fermentation is experienced?