A suggested explanation that might be true and is subject to testing by further observations is a(n):
A. scientific principle.
B. hypothesis.
C. theory.
D. experiment.
E. generality.
Answer: B
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Explain why regulation of enzyme synthesis is more time consuming than regulation of enzymatic activity
What will be an ideal response?
p53 is often referred to as the “guardian of the genome” by cancer research scientists. According to the diagram, which action by p53 explains its reputation?
a. Mutated p53 results in cancer.
b. p53 can trigger apoptosis.
c. p53 arrests the cell cycle if there is DNA damage.
d. p53 monitors the supply of oxygen in the environment.
Which of the following is NOT an example of
sensory adaptation? a. a loss of the sense of pressure of clothes against the skin b. adjustment to repeated jumping into a body of cold water c. response to lack of oxygen at high altitudes d. eventual loss of awareness of a constant noise e. the loss of the ability to smell a person’s perfume after being in that person’s presence for some time
Which one of the following enzymes catalyzes the attachment of nucleotides to a growing complementary strand?
A) restriction enzyme B) DNA polymerase C) plasmid D) DNA ligases E) transgenic