Respiration in Plants - Online Test
Q1. Two Synonyms are
Answer : Option C
Explaination / Solution:
Tricarboxylic acid cycle and citric acid cycle are two synonyms as both represent same cycle occurring during respiration process.
Q2. Net gain of ATP molecules per hexose during aerobic respiration is
Answer : Option D
Explaination / Solution:
Each glucose (hexose) during complete oxidation or aerobic respiration produce net 36 ATP molecules, which is produced in form of NADPH and FADH. Each NADPH produce 3 ATP and FADH two ATP molecules.
Q3. Krebs cycle is both catabolic and anabolic because it provides
Answer : Option B
Explaination / Solution:
Kreb’s cycle is both catabolic and anabolic because it provides a number of intermediates which are product of catabolism as well as anabolism.
Q4. Lactic acid produced in muscle is sent to --------------------- to regenerate glucose.
Answer : Option A
Explaination / Solution:
Lactic acid is produced in muscle during insufficient oxygen in muscle cells. Lactic acid produced in muscle is sent to regenerate glucose during rest in presence of sufficient oxygen.
Q5. During anaerobic respiration less energy is produced than aerobic respiration because
Answer : Option A
Explaination / Solution:
During anaerobic respiration, incomplete oxidation of glucose takes place but during aerobic respiration complete oxidation of glucose occurs in which less energy is produced.
Q6. Dough kept overnight in warm place becomes soft and spongy due to
Answer : Option C
Explaination / Solution:
Fermentation is a kind of anaerobic respiration in absence of oxygen to produce ethanol and carbon dioxide gas. Dough kept overnight in warm place becomes soft and spongy due to carbon dioxide gas released during fermentation.
Q7. When and where anaerobic respiration does occurs in man and yeast?
Answer : Option C
Explaination / Solution:
Anaerobic respiration in man occurs in muscle cells during sudden activity in cells to form lactic acid. In yeast anaerobic respiration occurs in absence of oxygen to form ethanol.
Q8. Acetyl CoA combine with oxalo-acetate in presence of condensing enzyme citrate synthetase to form 6-C compound called
Answer : Option C
Explaination / Solution:
Acetyl CoA combine with oxalo-acetate in presence of enzyme citrate synthetase to form 6-C compound called citric acid during Kreb’s cycle.
Q9. The correct sequential order of pathway is
Answer : Option A
Explaination / Solution:
There is a sequential, orderly pathway functioning, with one substrate forming the next and with glycolysis, TCA cycle and ETS pathway following one after another.
Q10. Oxidative phosphorylation is
Answer : Option C
Explaination / Solution:
Oxidative phosphorylation is process in which ATP is produced by chemiosmosis in inner wall of mitochondria called cristae.
