Question

What does horseradish peroxidase do in endocytosis?

a) Breaks down lipids
b) Facilitates membrane fusion
c) Catalyzes a color-changing reaction
d) Conjugates with LDL cholesterol; an enzymatic assay for HRP will have LDL attached and reports cholesterol

Answer 1

Horseradish peroxidase (HRP) catalyzes the detoxification of peroxides in peroxisomes, which are organelles involved in lipid biosynthesis. HRP helps transfer hydrogen atoms to oxygen to produce hydrogen peroxide and neutralize poisons like alcohol.

Step-by-step explanation:

Horseradish peroxidase (HRP) is an enzyme that catalyzes the detoxification of peroxides in peroxisomes, which are membrane-bound organelles in eukaryotic cells. Peroxisomes play a role in lipid biosynthesis and carry out oxidation reactions to break down fatty acids and amino acids. HRP helps transfer hydrogen atoms from various molecules to oxygen, producing hydrogen peroxide, and neutralizes poisons like alcohol. It does not break down lipids, facilitate membrane fusion, or conjugate with LDL cholesterol.