Approximately ____ percent of the sun’s energy is reflected back into space
a. 10
b. 20
c. 30
d. 40
e. 50
c
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Which of the following is the most useful in representing population growth on a graph?
a. logarithmic reproduction of the growth curve b. a semi-logarithmic graph using a log scale on the y-axis c. an arithmetic graph of the lag phase followed by a logarithmic section for the log, stationary, and death phase d. none of the above would best represent a population growth curve
During ________, a ribosome assembles a polypeptide whose amino acid sequence is specified by the nucleotide sequence in a molecule of mRNA.
A. translation B. posttranscriptional modification C. replication D. transcription
How do protists provide evidence for the step-wise evolution of mitosis?
A. Mitosis has not been observed in any protist species. B. Only meiosis occurs in protists. C. Protists use conjugation instead of mitosis. D. In some protists the nuclear membrane fails to breakdown during mitosis.
Membranes of thermophilic bacteria are stabilized by phospholipids with ________.
A. fatty acids that tend to be more saturated B. fatty acids that have more double bonds C. fatty acids that have lower molecular weights D. All of the choices are correct.