Q. No.Respiration is regarded as a __________ process.
| 1. | anabolic and exergonic |
| 2. | anabolic and endergonic |
| 3. | catabolic and endergonic |
| 4. | catabolic and exergonic |
Subtopic: Glycolysis | Aerobic Respiration |
64%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
The three sequential steps of aerobic respiration are:
| 1. | Glycolysis – Krebs cycle – Oxidative phosphorylation |
| 2. | Krebs cycle – Glycolysis – Oxidative phosphorylation |
| 3. | Glycolysis – Oxidative phosphorylation – Krebs cycle |
| 4. | Oxidative phosphorylation – Glycolysis – Krebs cycle |
Subtopic: Glycolysis | Aerobic Respiration | Kreb's Cycle | ETS |
79%
Level 2: 60%+
Please attempt this question first.
Hints
The link reaction between glycolysis and Krebs cycle involves:
| 1. | Conversion of pyruvate to lactic acid |
| 2. | Conversion of acetyl CoA to oxaloacetate |
| 3. | Conversion of glucose to pyruvate |
| 4. | Conversion of pyruvate to acetyl CoA |
Subtopic: Aerobic Respiration | Kreb's Cycle |
85%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
In aerobic respiration, how many NADH + H⁺ molecules are produced during complete oxidation of one glucose molecule?
1. 6
2. 8
3. 10
4. 12
1. 6
2. 8
3. 10
4. 12
Subtopic: Glycolysis | Aerobic Respiration |
Level 3: 35%-60%
Please attempt this question first.
Hints
The NCERT states that the process of breathing is connected to the release of energy from food. What is the fundamental reason for this connection?
| 1. | Breathing produces oxygen, which is the primary respiratory substrate for oxidation. |
| 2. | The oxidation of food molecules (respiration) requires oxygen, which is supplied by breathing. |
| 3. | Breathing releases the energy stored in ATP, which is then used to break down food. |
| 4. | Breathing and eating are both involuntary processes essential for life. |
Subtopic: Glycolysis | Aerobic Respiration |
74%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following is NOT formed during the link reaction (pyruvate oxidation)?
1. Acetyl CoA
2. \(CO_2\)
3.\(NADH+H^+\)
4. \(FADH_2\)
1. Acetyl CoA
2. \(CO_2\)
3.\(NADH+H^+\)
4. \(FADH_2\)
Subtopic: Aerobic Respiration |
88%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The end product of the oxidative decarboxylation of pyruvate is which then enters the Krebs cycle.
1. Oxaloacetic acid
2. Citric Acid
3. Acetyl CoA
4. Malic Acid
1. Oxaloacetic acid
2. Citric Acid
3. Acetyl CoA
4. Malic Acid
Subtopic: Aerobic Respiration |
79%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
The end product of glycolysis, __________, is transported from the cytoplasm into the mitochondrial matrix for further oxidation.
1. Pyruvate
2. Acetyl CoA
3. Glucose
4. NADH
Subtopic: Aerobic Respiration |
87%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The conversion of pyruvate into acetyl CoA before the Krebs cycle is catalysed by the __________ complex, which also involves the decarboxylation of pyruvate and the reduction of NAD+ to NADH.
1. Pyruvate dehydrogenase complex
2. Citric acid synthase complex
3. NADH dehydrogenase complex
4. ATP synthase complex
Subtopic: Aerobic Respiration |
89%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The first step of aerobic respiration inside the mitochondrion takes place in the __________.
1. Matrix
2. Inner membrane
3. Outer membrane
4. Cristae
Subtopic: Aerobic Respiration |
80%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
© 2026 GoodEd Technologies Pvt. Ltd.