The gland that is active only till puberty is thymus. The thymus gland plays a crucial role in the development of the immune system, particularly T-cells, which are essential for fighting off infections. However, its activity declines significantly after puberty.
English
100 Questions
100 Marks
90 Mins English English100 Questions100 Marks90 Mins English English100 Questions100 Marks90 Mins EnglishWith reference to glucose metabolism and cellular respiration, consider the following statements:
Statement 1: The conversion of succinate to fumarate in the TCA cycle is unique because it is the only step catalyzed by an enzyme embedded in the inner mitochondrial membrane and directly links the TCA cycle to the electron transport chain.
Statement 2: Oxidative phosphorylation is the only stage of cellular respiration where oxygen is directly consumed, and all ATP generated in this stage is produced by substrate-level phosphorylation.
Statement 3: In glycolysis, the enzyme phosphofructokinase-1 (PFK-1) is allosterically inhibited by high concentrations of ATP and citrate, making it a key regulatory point for both glycolysis and the TCA cycle.
Which of the statements given above are correct?
In the Z-scheme of photosynthesis, which of the following electron flow combinations are NOT correct?
(i) P680 → Pheo → PQA → PQB → Cyt b6f → PC → P700
(ii) P700 → A0 → A1 → FeSx → FeSA → FeSB → Fd
(iii) P680 → Pheo → PQA → PQB → Cyt b6f → PC → P700
(iv) P700 → FA → A0 → FeSA → FeSB → FeSx → Fd
With reference to glucose metabolism and cellular respiration, consider the following statements:
Statement 1: The conversion of succinate to fumarate in the TCA cycle is unique because it is the only step catalyzed by an enzyme embedded in the inner mitochondrial membrane and directly links the TCA cycle to the electron transport chain.
Statement 2: Oxidative phosphorylation is the only stage of cellular respiration where oxygen is directly consumed, and all ATP generated in this stage is produced by substrate-level phosphorylation.
Statement 3: In glycolysis, the enzyme phosphofructokinase-1 (PFK-1) is allosterically inhibited by high concentrations of ATP and citrate, making it a key regulatory point for both glycolysis and the TCA cycle.
Which of the statements given above are correct?
In the Z-scheme of photosynthesis, which of the following electron flow combinations are NOT correct?
(i) P680 → Pheo → PQA → PQB → Cyt b6f → PC → P700
(ii) P700 → A0 → A1 → FeSx → FeSA → FeSB → Fd
(iii) P680 → Pheo → PQA → PQB → Cyt b6f → PC → P700
(iv) P700 → FA → A0 → FeSA → FeSB → FeSx → Fd
Suggested Test Series
Suggested Test Series
With reference to glucose metabolism and cellular respiration, consider the following statements:
Statement 1: The conversion of succinate to fumarate in the TCA cycle is unique because it is the only step catalyzed by an enzyme embedded in the inner mitochondrial membrane and directly links the TCA cycle to the electron transport chain.
Statement 2: Oxidative phosphorylation is the only stage of cellular respiration where oxygen is directly consumed, and all ATP generated in this stage is produced by substrate-level phosphorylation.
Statement 3: In glycolysis, the enzyme phosphofructokinase-1 (PFK-1) is allosterically inhibited by high concentrations of ATP and citrate, making it a key regulatory point for both glycolysis and the TCA cycle.
Which of the statements given above are correct?
In the Z-scheme of photosynthesis, which of the following electron flow combinations are NOT correct?
(i) P680 → Pheo → PQA → PQB → Cyt b6f → PC → P700
(ii) P700 → A0 → A1 → FeSx → FeSA → FeSB → Fd
(iii) P680 → Pheo → PQA → PQB → Cyt b6f → PC → P700
(iv) P700 → FA → A0 → FeSA → FeSB → FeSx → Fd
With reference to glucose metabolism and cellular respiration, consider the following statements:
Statement 1: The conversion of succinate to fumarate in the TCA cycle is unique because it is the only step catalyzed by an enzyme embedded in the inner mitochondrial membrane and directly links the TCA cycle to the electron transport chain.
Statement 2: Oxidative phosphorylation is the only stage of cellular respiration where oxygen is directly consumed, and all ATP generated in this stage is produced by substrate-level phosphorylation.
Statement 3: In glycolysis, the enzyme phosphofructokinase-1 (PFK-1) is allosterically inhibited by high concentrations of ATP and citrate, making it a key regulatory point for both glycolysis and the TCA cycle.
Which of the statements given above are correct?
In the Z-scheme of photosynthesis, which of the following electron flow combinations are NOT correct?
(i) P680 → Pheo → PQA → PQB → Cyt b6f → PC → P700
(ii) P700 → A0 → A1 → FeSx → FeSA → FeSB → Fd
(iii) P680 → Pheo → PQA → PQB → Cyt b6f → PC → P700
(iv) P700 → FA → A0 → FeSA → FeSB → FeSx → Fd
