Referring to the above diagram, what structure
is labeled "C"?
a. the appendix
b. the cecum
c. a polyp
d. a portion of the small intestine
e. the colon
A
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The most likely explanation for why toothed whales have a blowhole is
A. they evolved from an animal with gills. B. they evolved from an animal with nostrils. C. blowholes are better for large animals. D. blowholes are better for breathing underwater than gills are.
What would result for global climate from a massive drop in atmospheric carbon dioxide?
A. An increase in ocean temperature B. Increased rock weathering C. A decrease in surface temperature D. Increased nitrogen availability E. A decrease in free oxygen content
Which best describes the role of neurotransmitters in behavior?
A. In specific ecological contexts, neurotransmitters can be important for behavior. For instance, aggression requires the neurotransmitter serotonin. B. Some specific behaviors will require neurotransmitters. For instance, aggression requires the neurotransmitter serotonin. C. Neurotransmitters allow neurons to communicate, and are thus involved in all behaviors. Levels of specific neurotransmitters have been associated with levels of specific behaviors -- such as serotonin and aggression. D. Neurotransmitters have been developed for researchers who want to manipulate animal behaviors. For instance, serotonin can be applied to lobsters to increase aggression.
Which of the following is a common source of antibiotics?
A) Acetobacter B) Bacillus species C) Pseudomonas D) Streptococcus thermophilus E) Streptomyces