In the context of aerobic respiration, uncoupling agents like 2,4-dinitrophenol (DNP) disrupt ATP synthesis by:
Inhibiting the electron transport chain
Dissipating the proton gradient across the inner mitochondrial membrane
Blocking the binding of NADH to Complex I
Inhibiting the activity of ATP synthase directly
Related Questions
The metabolic pathway through which the electron passes from one carrier to another is called
Electron transport system
Electron procedure system
Electron moving procedure
None of the above
An ATP molecule is structurally most similar to a molecule of
RNA nucleotide
DNA nucleotide
Amino acid
Fatty acid
Citric acid cycle was discovered by
Hans Krebsโ; 1937
Jon Mathai; 1937
Parna; 1936
Embeden; 1936
During cellular respiration, is converted to . What is the significance of this conversion?
It represents the acceptance and transport of high-energy electrons.
It signals the completion of glycolysis.
It initiates the Krebs cycle.
It catalyzes the breakdown of glucose.
Co-Factor required for formation of acetyl Co-A is
TPP
Lipoic acid
, Co-A
All of these
The main purpose of electron transport chain is to
Cycle NADH + H and back to NAD
Use the intermediate from TCA cycle
Breakdown pyruvic acid
All of the above
Which enzyme is directly responsible for substrate-level phosphorylation in the citric acid cycle?
Succinyl-CoA synthetase
Citrate synthase
Isocitrate dehydrogenase
ฮฑ-Ketoglutarate dehydrogenase
What is the role of in cellular respiration ?
It is the final electron acceptor for anaerobic respiration.
It functions as an enzyme.
It is a nucleotide source for ATP synthesis.
It functions as an electron carrier.
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
Before entering the Krebs cycle, fats, carbohydrates, and proteins are broken down into which common metabolite?
Oxaloacetate
Citrate
Acetyl CoA
Succinate
