For the polymerase chain reaction to occur, ____.
A. the reaction temperature must be cycled from low to high
B. all DNA fragments must be identical
C. the DNA must remain double stranded
D. a sticky end must be available for the ligase enzyme to function
E. a large sample of DNA is needed
Answer: A
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Each molecule of hemoglobin can bind to six molecules of oxygen
Indicate whether the statement is true or false.
Why does a genomic library need more clones than what would be estimated by calculations to be complete?
A) There is a significant probability that some sequences would not be represented in a library if it was only the calculated size. B) The restriction enzyme that is used to prepare the DNA for cloning will not digest certain sequences within the DNA. C) The restriction enzyme used to prepare the DNA for cloning sometimes leaves a different sticky end. D) Restriction enzymes cleave DNA preferentially at the ends of open reading frames so coding regions are preferentially cloned.
Beginning with a newly formed daughter cell, what is the order of the other stages of the eukaryotic cell cycle?
A) G1, S, G2, mitosis B) Mitosis, G1, G2, S C) G1, G2, mitosis, S D) Mitosis, S, G1, G2
An adult male produces sperm continuously by meiotic division of cells lining what structure?
A. Vas deferens tubules B. Seminiferous tubules C. Malpighian tubules D. Epididymis tubules E. Fallopian tubules