A researcher exposes a nonvirulent strain of Streptococcus pneumoniae to heat-killed cells of a virulent strain. After
exposure, the bacterial cells will be ____.
a. transduced
b. artificially transformed
c. transformed
d. nonvirulent
e. conjugated
ANSWER: c
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Lyme disease is spread from human to human by mosquito vectors.
Answer the following statement true (T) or false (F)
Which of the following is associated with a prokaryote?
a. Golgi body b. rough ER c. nucleoid d. peroxisomes
Experiments with __________ revealed that
__________ is the main carbohydrate that is transported in phloem. a. bees; sucrose b. aphids; starch c. bees; starch d. ants; sucrose e. aphids; sucrose
Fossil evidence shows that giraffes living 1000 years ago had much shorter necks than the giraffes
seen today. Which of the following statements best explains this observation? a. The two groups of giraffes are not related. b. The two groups of giraffes arose as a result of convergent evolution. c. The giraffes acquired longer necks through the continuing process of natural selection. d. The difference in neck length supports Lamarck's hypothesis. e. The difference in neck length is evidence for homoplastic inheritance