Biochemistry Quiz Latest Update
Already Passed
What is the primary role of phospholipids in cellular structures?
Phospholipids form the bilayer of cell membranes, creating a barrier that separates the
interior of the cell from the external environment.
How do enzymes lower activation en...
Biochemistry Quiz Latest Update
Already Passed
What is the primary role of phospholipids in cellular structures?
✔✔ Phospholipids form the bilayer of cell membranes, creating a barrier that separates the
interior of the cell from the external environment.
How do enzymes lower activation energy in biochemical reactions?
✔✔ Enzymes stabilize the transition state and provide an alternative reaction pathway, lowering
the energy required for the reaction to proceed.
What is a cofactor, and how does it assist enzymes?
✔✔ A cofactor is a non-protein molecule that helps enzymes catalyze reactions, often by
stabilizing the enzyme-substrate complex.
What is the significance of the heme group in hemoglobin?
✔✔ The heme group binds oxygen, allowing hemoglobin to transport oxygen from the lungs to
tissues in the body.
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, What is the function of chaperone proteins in cellular processes?
✔✔ Chaperone proteins assist in the proper folding of other proteins, preventing misfolding and
aggregation.
How do glycolipids contribute to cell recognition?
✔✔ Glycolipids are involved in cell-cell recognition and communication, often functioning as
receptors on the cell surface.
What is the purpose of the electron transport chain in cellular respiration?
✔✔ The electron transport chain generates ATP through oxidative phosphorylation by
transferring electrons and pumping protons across a membrane.
How do restriction enzymes function in DNA manipulation?
✔✔ Restriction enzymes cut DNA at specific sequences, allowing for genetic engineering and
cloning techniques.
What role does the ribosome play in translation?
✔✔ Ribosomes facilitate the assembly of amino acids into polypeptide chains, translating the
mRNA sequence into a functional protein.
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