Recall Pasteur's experiment on spontaneous generation. If he had just warmed the nutrient-rich broth, rather than boiled it, what would have been the likely outcome of his experiment? Cells would _____
A) not have appeared in either flask
B) have appeared in both flasks
C) have appeared in the swan-neck, but not the straight-neck flask
D) have appeared in the straight-neck, but not the swan-neck flask
Answer: B
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The majority of a shark's brain is devoted to processing signals of:
a. touch. b. olfaction. c. taste. d. electricity. e. vision.
A single DNA molecule contains two specific target sites separated by an intervening sequence. If site-specific recombination between these sites causes the intervening sequence to be released as a separate circular DNA molecule containing one target site, then the sites were oriented in
A) opposite directions causing excision. B) the same direction causing excision. C) opposite directions causing integration. D) the same direction causing integration. E) the same direction causing inversion.
The famous Greek philosopher Aristotle could be thought of as a taxonomist since he sorted organisms into groups based on a set of shared traits.
Answer the following statement true (T) or false (F)
Which of the following cell types is least likely to be capable of cell division?
a. mesophyll cell in a developing leaf b. parenchyma cell 2 mm from the tip of a root c. parenchyma cell in a dormant axillary bud d. functional tracheid cell in a stem