Which of the following plants produce spores on their strobili?
a) horsetails
b) flowers
c) conifers
d) club mosses
e) liverworts
Answer: a) horsetails
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What evidence did Gause and MacArthur find for the competitive exclusion principle?
What will be an ideal response?
You have isolated a prokaryotic cell. The first step in identification is a(n)
A) Gram stain. B) lactose fermentation test. C) endospore stain. D) flagella stain. E) DNA fingerprint.
Which of the following would be an example of environmental resistance?
A) life span that increases with population size B) food supply increasing along with a population C) bacteria populations producing more toxic waste as they grow D) slow gestation periods
Which of the following sequences of events correctly describes the progress of a protein that will be secreted from the cell?
A. E A F C B D B. E F A C B D C. C F A B D E D. The signal sequence is cleaved. E. Protein synthesis begins in the cytosol. F. Translation pauses.