The major reservoir of phosphorus is ____
a. sedimentary rock
b. plant material
c. groundwater
d. the atmosphere
e. ocean water
ANSWER: a
Biology & Microbiology
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In ________, cells are mixed with recombinant DNA and exposed to a brief pulse of high-voltage electricity to cause the membrane to become permeable and allow the uptake of DNA from its environment.
Fill in the blank(s) with the appropriate word(s).
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The genome of retroviruses is made of
A. ssDNA. B. dsDNA. C. ssRNA. D. dsRNA.
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In mitosis,
a. the chromosome number is halved. b. the chromosome number is doubled. c. the chromosome number stays the same. d. the chromosome number may double or be halved depending on the species. e. gametes are formed in bacteria only
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Fecundity increases with body weight
Indicate whether the statement is true or false
Biology & Microbiology