The sirtuin, resveratrol, is a natural component of
A) turtle soup.
B) owl meat.
C) cigarette smoke.
D) red wine.
D) red wine.
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Most synapses found so far in the mammalian central nervous system (CNS) are classified as _____
A) chemical rather than electrical B) electrical rather than chemical C) magnetic rather than chemical D) magnetic rather than electrical
What is the role of the vir genes on a Ti plasmid?
A) to cause crow gall disease (virulence) B) to confer resistance to viral infection C) replication of the plasmid D) T-DNA transfer
Interbreeding between Neanderthals and modern H. sapiens likely took place in ____ around _____ years ago, before H. sapiens spread around the world
A. the Middle East; 60,000 B. Africa; 60,000 C. the Middle East; 200,000 D. Africa; 200,000 E. the Middle East; 1.4 million
The technique that allowed Hershey and Chase to show that the bacteriophage injects a specific molecule, was to
A. apply heat to the polysaccharide of the bacterium, and then determine if protein or DNA was responsible for infection. B. tag both DNA and protein with radioactive markers, to identify which was injected into a bacterium. C. tag DNA in the virus with radioactive phosphorus, to identify if it as injected into a bacterium. D. tag protein with radioactive sulfur, to identify if it was injected into a bacterium. E. apply X-ray diffraction to detect whether protein or DNA was injected into a bacterium.