If a single DNA molecule is amplified by PCR, how many DNA molecules will exist after FIVE cycles?
A) 6
B) 8
C) 10
D) 32
E) 64
D) 32
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This protozoa has a trophozoite stage but no cyst stage and reproduces via longitudinal binary fission. The parasite belongs to which category?
a. Amebae b. Flagellates c. Ciliates d. Microsporidia
Auditory information travelling from the cochlea toward the brain passes through several structures. Which order is correct?
a. cochlea to primary auditory cortex to the medulla to the pons b. cochlea to cortex pons to medulla to the primary auditory cortex c. cochlea to medulla to pons to primary auditory d. cochlea to medulla to primary auditory cortex to the pons
All of the following promote the unloading of oxygen to needy tissues EXCEPT
a. high metabolism. b. abundant oxygen supply. c. higher temperatures. d. lower pH. e. small diameter blood vessels.
Hershey and Chase experimented with radioactively labeled phosphorus and sulfur to determine that DNA and not protein is the genetic material. Which of the following would NOT be an essential part of this experiment?
a. Sulfur is present in amino acids in the protein coat of bacteria. b. Phosphorus is present in high amounts in DNA. c. Sulfur is not present in DNA. d. Phosphorus is not present in amino acids in the protein coat of bacteria. e. DNA contains nitrogen.