Nitrous oxide (N2O) is a
A) product of denitrification.
B) product of nitrification.
C) potent greenhouse gas.
D) potent greenhouse gas that is a product of denitrification.
Answer: D
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Identify the structure of the neuron marked D
a. axon terminal b. cell body c. axon d. glial cell e. dendrites
Which structure in the human body regulates hunger and satiety (a sense of fullness)?
a. hypothalamus b. liver c. pancreas d. small intestine e. stomach
If you found a mutation, involving the loss of two bases, which was present in humans living on all four continents which you could test but was absent in close relatives such as gorillas and chimps, what would this imply?
A. Two bases were actually insertions in the nonhuman primates. B. Deletion arose before the branch between humans and nonhuman primates. C. Deletion arose in multiple nonhuman primates. D. Deletion arose at least six times in different human populations. E. Deletion arose after the branch between humans and nonhuman primates.
A photograph formed using a microscope is called a(n) ____
a. spectrograph b. x-ray c. stereograph d. micrograph e. microphoto