The famous “bell-shaped curve” that usually results
when test scores are plotted against number of
students is an example of what type of selection?
a. disruptive
b. stabilizing
c. divergent
d. variable
e. directional
Answer: b
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How does the cell overcome inhibition from irreversible inhibitors?
a. by binding a second inhibitor, which forces the enzyme's conformation to dislodge the first inhibitor b. by phosphorylating the enzyme, altering the enzyme's conformation to dislodge the inhibitor c. by altering the cellular pH, which will decrease the bonding between the enzyme and the inhibitor d. by degrading the enzyme-inhibitor complex and generating new enzyme e. by upregulating the expression of other enzymes with similar catalytic functions
Atoms with different numbers of which component are considered to be distinct elements?
a. electrons b. neutrons c. protons d. orbitals
The bones of the pectoral girdle are arranged ____
a. for weight bearing b. to minimize structural damage during movements c. to maximize movements d. to maximize stability e. to maximize organ protection
Which of the following best describes substances that enter a plant through the root system?
A) They are dissolved in water. B) They are obtained from the air. C) They are organic molecules. D) They are brought in through stomata.