TCA Cycle and ETC

Q.

Carbon dioxide combines with haemoglobin to form____________.

1. Carboxyhaemoglobin

2. Carbaminohaemoglobin

3. Carbhaemoglobin

4. None of these

Q.

Explain the glycolysis in detail.

Q. The full form of ${\mathrm{FADH}}_2$ is ______________.

1. flavin adenine diphosphate
2. flavin amine dinucleotide
3. flavoured adenine dinucleotide
4. flavin adenine dinucleotide

Q. Net yield of ATP molecules in aerobic respiration during Krebs' cycle per glucose molecule is

1. 38 ATP molecules
2. 2 ATP molecules
3. 8 ATP molecules
4. 36 ATP molecules

Q.

Please explain the aerobic respiration and it's three steps

Q. Complete oxidation of acetyl from acetyl-CoA during TCA cycle forms:

1. ${\mathrm{CO}}_2$
2. ${\mathrm{NADH}}_2$
3. Alcohol
4. ${\mathrm{FADH}}_2$

Q.

Assertion (A): RQ value of fats and proteins is less than one

Reason (R): Fats and proteins consume more oxygen than carbohydrates do, during their oxidation

1. Both A & B are true and R explain A

2. Both A & B are true and R does not explain A

3. Both A & B are false

4. A is true and B is false

Q. The site of Krebs' cycle is

1. Racker's particles
2. Cytoplasm
3. Mitochondrial matrix
4. Intermembrane space of mitochondria

Q.

Why anaerobic respiration produces low energy i.e only 2 ATP?

Q.

What is the full form of ATP ?

Q. Which of the intermediate of the Kreb’s cycle is utilised in the formation of amino acids?

1. Isocitric acid
2. Citric acid
3. Malic acid
4. 𝛼-ketoglutaric acid

Q. In electron transfer chain, how many molecules of ATP can be obtained from one molecule of ${\mathrm{NADH}}_2$?

1. 1
2. 4
3. 2
4. 3

Q.

In body cells O2 breaks glucose or pyruvic acid

Q.

In which part of the cell does glucose breakdown into pyruvate. Trace The breakdown of pyruvate in lack of oxygen. In whichIn which cell of human body does it take place. Name the energy currency of the cell.

Q. In which of these cell organelle does the electron transfer chain reaction occur?

1. Golgi body
2. Ribosome
3. Cytoplasm
4. Mitochondria

Q. The product formed during first biological oxidation in glycolysis is ______.

1. 3 - PGA

2. 1, 3 bisphosphoglyceric acid

3. PEP

4. G-3-P

Q. Complete the following flowchart.
Carbohydrates enter $\to$______(a)_____$\to$Pyruvic acid$\to$Acetyl-CoA enters $\to$____(b)____$\to$Carbon dioxide+ Water+ Energy

1. (a) Glycolysis, (b) Krebs Cycle
2. (a) Krebs Cycle, (b) Glycolysis
3. (a) Fermentation, (b) Glycolysis
4. (a) Krebs Cycle, (b) Fermentation

Q. Plant synthesize glucose in sunlight with the help of chlorophyll from carbon dioxide and water and given away oxygen. Identify the four compounds in this process and name their types.

Q. __________ is completely oxidised during TCA cycle.

1. Glucose
2. Ethanol
3. Acetyl-CoA
4. Citric acid

Q. What is the process of glycolysis

Q. The process of aerobic respiration include which of these stages?

1. Glycolysis
2. Kreb’s cycle
3. Fermentation
4. Electron transport chain

Q. Sort the following respiratory pathway.

1. $\mathrm{Pyruvate}\mathrm{oxidation}$
2. $\mathrm{EMP}\mathrm{Pathway}$
3. $\mathrm{ETC}$
4. $\mathrm{Kreb}s\mathrm{cycle}$

Q. Which of the following is correct about Kreb's cycle?

1. ADP is converted to ATP
2. Pyruvic acid is converted to ATP
3. Acetyl-CoA is converted to CO₂ and H₂O
4. Glucose is converted in CO₂

Q. __________ is required to initiate the TCA cycle.

1. Ethanol
2. Acetyl CoA
3. Citric acid
4. Glucose

Q. Photophosphorylation in chloroplast requires movement of:

1. electrons across the membrane
2. ions across the membrane
3. protons across the membrane
4. electrons and protons across the membrane

Q. In electron transfer chain, how many molecules of ATP can be obtained from one molecule of ${\mathrm{NADH}}_2$?

1. 3
2. 4
3. 1
4. 2

Q. __________ is completely oxidised during TCA cycle.

1. Glucose
2. Ethanol
3. Acetyl-CoA
4. Citric acid

Q. Sort the following respiratory pathway.

1. $\mathrm{Pyruvate}\mathrm{oxidation}$
2. $\mathrm{EMP}\mathrm{Pathway}$
3. $\mathrm{ETC}$
4. $\mathrm{Kreb}s\mathrm{cycle}$

Q. How many ATP molecules are produced by aerobic oxidation of one molecule of glucose?

1. 2
2. 4
3. 38
4. 34

Q.

Cellular respiration involves:

1. Only glycolysis

2. Glycolysis, Krebs cycle and Electron Transport Chain only

3. Only Krebs cycle

4. Kreb’s cycle and Electron Transport Chain only