Mary Mallon, aka Typhoid Mary, was which type of carrier?
A) asymptomatic
B) passive
C) transient
D) zoonotic
Answer: A) asymptomatic
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The figure above depicts the result of an experiment to determine how DNA replication occurs. Based on these results, it
appears that after replication, each new DNA molecule contains ____.
a. either entirely old DNA strands or entirely new DNA strands b. one old DNA strand and one new DNA strand c. entirely new DNA d. some DNA helix regions from old DNA alternating with some DNA regions from new DNA e. two strands that are each a mix of old and new DNA
Mitotic Cdk-cyclin is active when it is
A) singly phosphorylated. B) acetylated. C) doubly phosphorylated. D) doubly methylated. E) cleaved by proteases.
Fluorescence microscopy is form of light microscopy
a. true b. false
What most likely explains the recovery of live S strain cells from a mouse injected with heat-killed S strain mixed with live R strain cells?
a. The S strain was revived by the presence of the host's immune system. b. The R strain picked up the S strain DNA, enabling it to produce a capsule. c. The R strain cells picked up the capsules from the S strain cells. d. The S strain fused with the R strain, making it resistant.