Biochemistry Questions and Answers with Verified Solutions
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Course
Biochemistry
Institution
Biochemistry
Biochemistry Questions and Answers
with Verified Solutions
How do cofactors assist enzymes in catalysis?
Cofactors are non-protein molecules that bind to the enzyme and assist in catalyzing
reactions, often by stabilizing the transition state.
What is the function of the electron transport ch...
Biochemistry Questions and Answers
with Verified Solutions
How do cofactors assist enzymes in catalysis?
✔✔ Cofactors are non-protein molecules that bind to the enzyme and assist in catalyzing
reactions, often by stabilizing the transition state.
What is the function of the electron transport chain in cellular respiration?
✔✔ The electron transport chain transfers electrons through a series of protein complexes,
creating a proton gradient that drives the synthesis of ATP.
What are the building blocks of nucleic acids?
✔✔ The building blocks of nucleic acids are nucleotides, which consist of a sugar, a phosphate
group, and a nitrogenous base.
What is the significance of feedback inhibition in metabolic pathways?
✔✔ Feedback inhibition occurs when the end product of a metabolic pathway inhibits an earlier
step, preventing the overproduction of that product.
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, How do allosteric enzymes regulate metabolic activity?
✔✔ Allosteric enzymes have sites where molecules can bind to either inhibit or activate their
activity, allowing fine-tuned control of metabolic pathways.
What are the two stages of photosynthesis, and what occurs in each?
✔✔ The two stages of photosynthesis are the light reactions, where sunlight is captured and used
to produce ATP and NADPH, and the Calvin cycle, where carbon dioxide is fixed into sugars.
What is the role of the rough endoplasmic reticulum in protein synthesis?
✔✔ The rough endoplasmic reticulum is studded with ribosomes that synthesize proteins for
export or insertion into cellular membranes.
How does the pH level affect enzyme activity?
✔✔ The pH level affects the shape and charge of the enzyme and substrate, influencing the rate
of the reaction, with each enzyme having an optimal pH for activity.
What is the role of enzymes in biochemical reactions?
✔✔ Enzymes act as catalysts, speeding up biochemical reactions without being consumed in the
process.
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