What is the ultimate source of energy for almost all living organisms?:
a. heat
b. lipids
c. the sun
d. glucose
e. carbon dioxide
c
Biology & Microbiology
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Which of the following is a step in a PCR?
A. DNA is cooled to a temperature at which the hydrogen bonds holding the strands break. B. The primers anneal to the complementary sequences on the template DNA C. DNA gyrase enzyme relieves the supercoiling ahead of the replication fork. D. The DNase I synthesizes a new strand of DNA that is complementary to the template DNA.
Biology & Microbiology
The human genome contains approximately 40,000 genes
a. True b. False
Biology & Microbiology
Skin cells are fastened into strong sheets by
A) basal bodies. B) anchoring junctions. C) tight junctions. D) gap junctions.
Biology & Microbiology
What reactions is synonymous with catabolism?
Biology & Microbiology