Which of the following is the typical mode of transmission for hepatitis C?
A. Bite from body louse
B. Contaminated blood and blood products
C. Inhalation of droplets
D. Contaminated shellfish
Answer: B
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ws+; ws+; ws+; ws+; ws; ws; ws; ws
In Neurospora, the white-spore allele (ws) results in white spores rather than the wild-type black spores. Diploid ws / ws+ cells undergo meiosis followed by one round of mitosis to form ordered tetrads. Indicate if the pattern of spores seen in the tetrads are consistent with first-division or second-division segregation. A) first-division segregation pattern B) second-division segregation pattern
Astrocytes
a. are a type of neuroglial cell found in the brain. b. make nerve growth factor. c. play a role in immune defenses. d. make lactate to fuel active neurons. e. include all of these descriptions.
The most abundant gas in the atmosphere is oxygen
____________________ Indicate whether the statement is true or false.
During DNA replication, each new strand begins with a short
A. RNA primer. B. lipid primer. C. amino acid primer. D. DNA primer. E. hydrophilic primer.