Why is Taq polymerase used in a polymerase chain reaction (PCR)?
A. Taq polymerase has proofreading activity and thus makes fewer errors than other DNA polymerases.
B. Unlike other DNA polymerases, Taq polymerase is heat stable and survives the 94 degree denaturation step in PCR.
C. Unlike other DNA polymerases, Taq polymerase is not inhibited by dideoxy nucleotides.
D. Taq polymerase can produce DNA from an RNA template, unlike other DNA polymerases.
E. Taq polymerase is more efficient than other DNA polymerases.
B. Unlike other DNA polymerases, Taq polymerase is heat stable and survives the 94 degree denaturation step in PCR.
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What is the first step in producing a transgenic animal?
A. inject the desired gene(s) into a donor egg B. transgenic organism produces offspring that have the desired gene which can then produce more transgenic offspring C. implantation of a donor egg into the host mother D. transgenic eggs are harvested from the surrogate mother
Surface of the skin, lining of the mouth, throat, rectum, anus, vagina
A. Pseudostratified columnar B. Simple columnar C. Simple cuboidal D. Simple squamous E. Stratified squamous F. Transitional
The eggs of many reptiles contain ________, which serves as a food source for the embryo
Fill in the blank(s) with correct word
Single-celled eukaryotes lacking a cell wall are
A) protozoa. B) fungi. C) algae. D) insects. E) water molds.