_______ are characterized by having different types of teeth to feed on different types of food.
a) fishes
b) birds
c) amphibians
d) reptiles
e) mammals
Ans: e) mammals
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Which of the following is a restriction placed on DNA polymerase?
A. DNA polymerase can attach new nucleotides only in the 5' to 3' direction. B. DNA polymerases must begin synthesis using an RNA primer. C. DNA polymerases must have a template strand to copy from. D. All of these are restrictions of DNA polymerase
Transcription begins near a site in the DNA called the ______.
A. promoter B. enhancer C. response element D. transcription unit E. regulatory sequence
Which bacterial groups typically colonize the newborn within the first 12 hours of birth?
What will be an ideal response?
Injecting DNA into cells can be accomplished using
A. nitrocellulose membranes. B. silicon chips and nucleic acids. C. compressed air and gold beads. D. micropipettes. E. micropipettes, or compressed air and gold beads.