Which of the following would be considered a +/- relationship?

a) commensalism
b) predation
c) mutualism
d) dominance


Answer: b) predation

Biology & Microbiology

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Juanita was in an automobile accident and received a bad bump on her head. Although she had been a slender and calm person, after the accident she began to eat a lot and have emotional ups and downs. Her body temperature also fluctuated more dramatically

than in the past. What part of her brain is most likely damaged? A) cerebellum B) fornix C) midbrain D) hypothalamus

Biology & Microbiology

A whole organism clone is a clone of the organism that:

A) provides the egg cell from which the nucleus is removed. B) provides the nuclear (diploid) DNA. C) serves as the surrogate mother and carries the fetus to term. D) provides the (haploid) sperm cell. E) fertilizes the egg cell.

Biology & Microbiology

Which of the following are even smaller than viruses?

A) chlamydias B) prions and viroids C) rickettsias D) cyanobacteria

Biology & Microbiology

In examining water samples preserved in glass jars over the last century, you notice a steadily declining pH. What is the most likely general explanation?

A. gradual eutrophication of water sources B. rising atmospheric carbon dioxide levels leading to gradual acidification C. dumping of acids in waterways D. mislabeling of samples E. None of the answer choices is correct.

Biology & Microbiology