Which enzyme in the Krebs cycle catalyzes a reaction that directly produces a high-energy phosphate compound without involving an oxidation/reduction reaction?
Succinyl-CoA synthetase
Isocitrate dehydrogenase
α-ketoglutarate dehydrogenase
Malate dehydrogenase
Related Questions
In aerobic respiration complete oxidation of pyruvate by the stepwise removal of all the hydrogen atom makes …….. molecule of
2
3
4
5
Which of these steps in Krebs’ cycle indicates substrate level phosphorylation?
Conversion of succinyl acid to ∝-ketoglutaric acid
Conversion of succinic acid to malic acid
Conversion of succinyl Co-A to succinic acid
Conversion of malic acid to oxalo acetic acid
Which of these statements is incorrect ?
Oxidative phosphorylation takes place in outer mitochondrial membrane.
Enzymes of TCA cycle are present in mitochondrial matrix.
Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
Glycolysis occurs in cytosoal
How does the role of in cellular respiration relate to energy production?
It directly phosphorylates ADP to ATP.
It acts as the final electron acceptor in the electron transport chain.
It transports electrons to the electron transport chain, contributing to ATP synthesis.
It provides the energy for substrate-level phosphorylation.
How many ATP are formed during the citric acid cycle?
1 ATP
2 ATP
10 ATP
38 ATP
Four respiratory enzymes are given below. Arrange them in increasing order of the carbon number of the substrates on which they act.
I. Enolase
II. Aconitase
III. Fumarase
IV. Alcohol Dehydrogenase
II, IV, III, I
IV, I, II, III
I, IV, III, II
IV, I, III, II
How many NADH + molecule is released in Kreb’s cycle?
3
6
12
14
Select the wrong statement.
Heat flows from a body at higher temperature to a body at lower temperature.
Temperature is a form of energy.
Specific heat is the amount of heat required to raise the temperature of a unit mass of a substance by a unit degree of temperature.
Two systems are in thermal equilibrium if they have the same temperature.
Read the statements and choose the correct option.
Statement-A: is formed during the Krebs cycle.
Statement-B: Two GTP molecules per Krebs cycle are produced.
Both statements are correct
Both statements are incorrect
Only A is incorrect
Only B is incorrect
In Krebs’ cycle,
ADP is converted into ATP
Pyruvic acid is converted into and
Glucose is converted into
Pyruvic acid is converted into ATP
