1. What happens if a toxic substance interferes with monomers in the tertiary or quaternary structures?
a.The molecular reaction is delayed or inhibited due to denaturation of the enzyme. ***
b. the reaction will speed up
c.the reaction will slow down and the product will evaporate
d. nothing happens.
2. What molecule is ultimately responsible for putting together a particular enzyme?
a. lipids
b. ribosomes ***
c. mitochondria
d. nucelolus
3. If a gene’s instruction set (in DNA) were changed by a mutation ( a mistake in the DNA code), then what do you think would happen to the enzyme it creates?
a. the enzyme would be defective ***
b. the enzyme would change into another enzyme
c. the enzyme would work better
d. the enzyme would work better and have enhanced superpowers, like the ability to fly and shoot laser beams out of its eyes; it might even become a superhero enzyme
d. the enzyme would not be affected
To answer these questions, we'll break down the options and explanations for each question:
1. What happens if a toxic substance interferes with monomers in the tertiary or quaternary structures?
The correct answer is a. The molecular reaction is delayed or inhibited due to denaturation of the enzyme.
Explanation: Toxic substances can disrupt the structure of enzymes, leading to denaturation. Denaturation refers to the loss of the enzyme's three-dimensional structure, which is crucial for its function. Consequently, if the monomers in the tertiary or quaternary structures are interfered with, the enzyme's ability to facilitate the molecular reaction will be delayed or inhibited.
2. What molecule is ultimately responsible for putting together a particular enzyme?
The correct answer is b. Ribosomes.
Explanation: Ribosomes are responsible for protein synthesis, including the assembly of enzymes. Ribosomes read the instructions in mRNA (messenger RNA) molecules and use this information to link together amino acids, forming proteins such as enzymes.
3. If a gene's instruction set (in DNA) were changed by a mutation, then what do you think would happen to the enzyme it creates?
The correct answer is a. The enzyme would be defective.
Explanation: Genes contain the instructions for building proteins, including enzymes. Mutations, which are changes in the DNA code, can alter these instructions. If a gene's instruction set is changed by a mutation, it can lead to a defective enzyme. The protein produced from the mutated gene may have an altered structure or function, rendering the enzyme dysfunctional or less efficient.