Different Substrates of Respiration

Q.

Which of the following biomolecules is common to respiration ­mediated breakdown of fats, carbohydrates and proteins?

1. Fructose 1, 6-­bisphosphate

2. Glucose-­6-­phosphate

3. Acetyl CoA

4. Pyruvic acid

Q. What are catabolic and anabolic processes?
Explain with an example..

Q. In the following food chain, 100 J of energy is available to the lion. How much energy was available to the producer ?
Plant $\to$ Dear $\to$ Lion

Q.

How many times does the Krebs cycle turn per glucose molecule?

1. once

2. four times

3. three times

4. twice

Q. Which among the following statements is incorrect regarding protein?

1. The formation of myelin sheaths require high levels of amino acids.
2. RUBISCO is the most abundant protein found in nature.
3. Excess amino acids obtained from proteins are not stored in the body.
4. Insulin is a protein hormone released from the pancreas.

Q. In the following food chain, 20, 000 J of energy was available to the plants. How much energy would be available to man in this chain ?

Q. why are enzymes called biocatalysts? Is HCL an enzyme? Give some examples of other enzymes.

Q. During digestion, proteins are converted to _____(i)_____ and fats are converted to _______(ii)_______.

1. (i) glucose, (ii) fatty acids
2. (i) amino acids, (ii) glycogen
3. (i) amino acids, (ii) fatty acids
4. (i) fatty acids, (ii) amino acids

Q. Excess amino acids obtained from proteins are not stored in the body.

1. True
2. False

Q. The amino acids and fatty acids are converted into _____________ to enter the Kreb's cycle.

1. pyruvic acid
2. citric acid
3. acetyl-CoA
4. glucose

Q. 7. Define enzyme.

Q.

What are the final product of carbohydrates and fats and proteins after digestion?

Q.

Respiration and photosynthesis are just the

1. Similar process

2. None of these

3. Opposite process

4. Burning process

Q.

Pyruvate dehydrogenase is the enzyme that converts __________.

1. Glucose to pyruvate

2. Pyruvic acid into lactic acid

3. Pyruvate to glucose

4. Pyruvate to acetyl CoA

Q.

In the conversion of glucose to water and carbon dioxide, ____________ plays an important role at each step of the process.

1. Enzymes

2. Sunlight

3. Hydrogen

4. Carbon

Q.

Identify A, B $\&$ C in the given figure showing anaerobic respiration.

1. A - ATP, B - CO₂, C - 3-Phosphoglyceric acid

2. A - CO₂, B - Ethyl Alcohol, C - Lactic acid

3. A- Ethanol, B - CO₂, C - Lactic acid

4. A - Phosphoenol pyruvate, B - CO₂, C - Acetic acid

Q. Which of these tissues contain fat globules?

1. Areolar tissues
2. Yellow fibrous tissue
3. Adipose tissue
4. White fibrous tissue

Q.
Identify A and B in the following.$\mathrm{Lipids}\to A\to B\to \mathrm{Kreb}s\mathrm{cycle}\to {\mathrm{CO}}_2+H_{2}O+\mathrm{Energy}$

1. A - Amino acid, B - Glucose
2. A - Pyruvate, B - Fatty acid
3. A - Fatty acid, B - Pyruvate
4. A - Fatty acid, B - Acetyl-CoA

Q. What is ATP? Name the three components of ATP. (2 marks)

Q. Proteins are broken down into amino acids.

1. False
2. True

Q. As carbohydrates stored in the form of starch in plant body, similarly in which form proteins are stored?

Q. The amino acids and fatty acids are converted into _____________ to enter the Kreb's cycle.

1. pyruvic acid
2. citric acid
3. glucose
4. acetyl-CoA

Q. during digestion of food proteins break into amino acids while starch break into

Q. Excess amino acids obtained from proteins are not stored in the body.

1. True
2. False

Q. Draw a simple diagram showing the energy flow in an food chain.

Q. Fatty acids are absorbed into the bloodstream by which of the following processes?

1. Active transport
2. Facilitated diffusion
3. Simple diffusion
4. Osmosis

Q. Nicotinamide adenine dinucleotide is necessary for the production of FADH2.

1. True
2. False

Q. Riboflavin is necessary for the production of Flavin adenine dinucleotide.

1. True
2. False

Q. 9 Kcal energy is produced per gm of lipids.

1. True
2. False

Q. Excess amino acids obtained from proteins are not stored in the body.

1. True
2. False