Question

question 1 (1 point) ✓ saved

1. denaturation is a process by which the weak bonds that collectively maintain

the native shape of the apoenzyme are broken.

a) true b) false
question 2 (1 point) ✓ saved
intermittent sterilization is also called tyndallization
a) true b) false
question 3 (1 point) ✓ saved
autoclaving is effective for most materials except for
a) proteins
b) enzymes
c) amino acids
d) oils
question 4 (1 point) ✓ saved

Explanation:

• Question 1: Denaturation disrupts the non - covalent (weak) bonds (like hydrogen bonds, van der Waals forces) that maintain the native (natural) three - dimensional shape of proteins (apoenzyme is a protein part of an enzyme). So the statement is correct.
• Question 2: Intermittent sterilization is indeed also known as tyndallization. It involves a series of heating and incubation steps to kill spores and vegetative cells.
• Question 3: Autoclaving uses high - pressure steam. Oils are not effectively sterilized by autoclaving because they do not allow steam penetration easily. Proteins, enzymes (which are proteins), and amino acids can be affected by autoclaving in terms of denaturation, but autoclaving is not ineffective for them in the sense of not being able to sterilize (if the goal is just sterilization, not maintaining their native structure). Oils are a common exception as they are heat - stable but not permeable to steam for proper sterilization.

Answer:

1. a) True
2. a) True
3. d) oils