WorksheetsDP14 Quiz
Total questions: 19
Worksheet time: 10mins
What is a coenzyme?
A type of protein that speeds up chemical reactions
A non-protein compound that is necessary for the functioning of an enzyme
A molecule that stores genetic information
A type of lipid that forms cell membranes
Which of the following is an example of a coenzyme?
Glucose
ATP
NAD+
DNA
How are coenzymes typically involved in reactions?
They are permanently bound to enzymes
They are consumed in the reaction
They are temporarily bound and can be reused
They are not involved in reactions
What does it mean for coenzymes to be cyclic?
They are used once and then discarded
They are continuously regenerated and reused in metabolic pathways
They form a permanent part of the enzyme structure
They are only used in photosynthesis
Which of the following reactions is catabolic in nature?
Synthesis of proteins from amino acids
Breakdown of glucose during glycolysis
Formation of DNA from nucleotides
Photosynthesis
Which of the following reactions is anabolic in nature?
Glycolysis
Krebs cycle
Photosynthesis
Fermentation
Which coenzyme is primarily involved in photosynthesis?
NADH
FADH2
NADP+
Coenzyme A
Which coenzyme is primarily involved in cellular respiration?
NADP+
NAD+
Coenzyme Q
ATP
What role do coenzymes play in catabolic reactions?
They provide energy for the reaction
They act as electron carriers
They form the main substrate of the reaction
They inhibit the reaction
What role do coenzymes play in anabolic reactions?
They break down complex molecules
They provide the energy required for synthesis
They act as inhibitors
They are not involved in anabolic reactions
Which of the following is NOT a characteristic of coenzymes?
They are proteins
They are organic molecules
They assist enzymes in catalysis
They can be vitamins or derived from vitamins
Which vitamin is a precursor to the coenzyme NAD+?
Vitamin C
Vitamin B3 (Niacin)
Vitamin D
Vitamin A
Which coenzyme is involved in the transfer of acyl groups?
NAD+
FAD
Coenzyme A
ATP
In which process is FADH2 primarily used?
Photosynthesis
Glycolysis
Electron transport chain
DNA replication
Which coenzyme is involved in the Calvin cycle of photosynthesis?
NADPH
FAD
Coenzyme Q
ATP
Which coenzyme is involved in the synthesis of fatty acids?
NAD+
FAD
Coenzyme A
NADPH
Which of the following is a characteristic of anabolic reactions?
They release energy
They break down molecules
They require energy input
They occur spontaneously
Which coenzyme is involved in the Krebs cycle?
NADP+
FAD
Coenzyme A
ATP
Which of the following is a common feature of both NAD+ and FAD?
They are both involved in photosynthesis
They both carry electrons
They are both derived from Vitamin C
They both act as structural proteins
