Continuous cell lines differ from primary cell lines in that
A) viruses can be grown in continuous cell lines.
B) continuous cell lines always have to be re-isolated from animal tissues.
C) continuous cell lines are derived from primary cell lines.
D) continuous cell lines can be maintained through an indefinite number of generations.
E) continuous cell lines are from human embryos.
D
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CAM plants keep stomata closed in the daytime, thus reducing loss of water. They can do this because they _____
A) fix CO2 into organic acids during the night B) fix CO2 into sugars in the bundle-sheath cells C) fix CO2 into pyruvate in the mesophyll cells D) use the enzyme phosphofructokinase, which outcompetes rubisco for CO2 E) use photosystem I and photosystem II at night
Which of the following most correctly describes the whole-genome shotgun technique for sequencing a genome?
A) genetic mapping followed immediately by sequencing B) physical mapping followed immediately by sequencing C) cloning large genome fragments into very large vectors such as YACs, followed by sequencing D) cloning fragments from many copies of an entire chromosome, sequencing the fragments, and then ordering the sequences E) cloning the whole genome directly, from one end to the other
Using the correct base pairing rules for DNA replication, what would be the complementary strand for the strand TACCGATGC?
TACCGATGC? ATGGCTACG TACCGATGC GCTAGTCGA TTCCGTTCG none of the answer choices are correct
Which of the following is a trace mineral?
A) iodine B) sodium C) phosphorus D) sulfur