According to the animation, what does oxygen get reduced to at the end of the electron transport chain?
a. ATP
b. NADH
c. Water
d. Electrons
e. Protons
Ans: c. Water
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Which of the following statements best describes Figure 18.7 graph (b), which depicts Galton's data showing distribution of offspring height from the shortest parents he studied?
A. The parental mean for the shortest parents is larger than the mean height of their offspring. B. The parental mean for the shortest parents is smaller than the mean height of their offspring. C. Offspring from the shortest parents are taller than most members of the population. D. The average height of the shortest parents is greater than the mean height of the population. E. None of these answer options is correct.
Secondary succession can occur ____
a. after a fire b. on a new sand dune c. on bare rock d. immediately after the formation of an artificial lake e. on a glacier
Staphylococcus aureus, once it grows in a food, produces toxins that are not usually inactivated by heating.
Answer the following statement true (T) or false (F)
Which of the following is a change to the nucleotides in a segment of DNA that codes for a protein?
a. Proto-oncogenes b. Tumor suppressor genes c. Gene mutations d. Negative regulators