Which assay would MOST likely be used to determine whether a high antibody titer is due to Staphylococcus aureus infection?
a. agglutination
b. ELISA
c. qPCR
d. Western blot
Answer: D
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Why do flatworms move away from light sources?
A. to avoid skin cancer B. to avoid the mutagenic effects of direct sunlight C. to hide from predators D. their prey are always found in dark environments
According to the latest research, what statement best describes the first eukaryote?
a. It lacked a nucleus, a mitochondrion, or a chloroplast. b. It lacked a nucleus, but contained a mitochondrion and a chloroplast. c. It contained a nucleus and a chloroplast, but not a mitochondrion. d. It contained a nucleus and a mitochondrion, but not a chloroplast. e. It contained a nucleus, a mitochondrion, and a chloroplast.
Photosynthesis uses sunlight to convert water and carbon dioxide into
a) oxygen. b) high-energy sugars and starches. c) ATP and oxygen. d) oxygen and high-energy sugars and starches.
Which of the following are the three phases of translation?
A. initiation, elongation, and completion B. initiation, elongation, and termination C. activation, chain growth, and completion D. addition of cap and tail, removal of exons, and RNA splicing