Biology
Which of the following is the main substrate for any kind of respiration ?
- Starch
- Oxygen
- Glucose
- Sucrose
Answer
Glucose
Reason — Glucose is the simplest sugar. Any sugar first breaks to form glucose, which further breaks down to release energy.
Starch is a storage carbohydrate. It must first be broken down into glucose before it can be used in respiration. Oxygen is not a substrate; it is a reactant in aerobic respiration that helps release energy, but it is not the fuel. Sucrose is a sugar, but it must first be broken down into glucose and fructose before entering respiration.
Related Questions
Glycolysis takes place in :
- Chloroplast
- Mitochondria
- Cytoplasm
- Ribosomes
Lime water turns milky upon absorption of carbon dioxide gas due to the formation of:
- Calcium carbonate
- Sodium carbonate
- Calcium chloride
- Sodium chloride
Which of the following is a catabolic process ?
- Photosynthesis
- Respiration
- Both (a) and (b)
- None of these
The two major phases during the breakdown of glucose in respiration are (P) …………… and (Q) …………… .
- P — Glycogenesis, Q — Kreb's cycle
- P — Aerobic respiration, Q — Anaerobic respiration
- P — Anoxybiotic respiration, Q — Oxybiotic respiration
- P — Glycolysis, Q — Kreb's cycle