The reason for using Taq polymerase for PCR is that _____
A) it is heat stable and can withstand the heating step of PCR
B) only minute amounts are needed for each cycle of PCR
C) it binds more readily than other polymerases to the primers
D) it has regions that are complementary to the primers
A
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Which two means of birth control are most similar in the way they prevent pregnancy?
a. tubal ligation and IUDS b. oral contraceptives and spermicides c. tubal ligation and condums d. oral contraceptives and hormone patch
Which of the follow situations is an example of gene flow?
a. An acorn is carried by a bird to the other side of the valley b. Two birds instead of one born with blue feathers. c. The fastest rabbit escapes the foxes and survives long enough to reproduce. d. Male deer fighting for territory every fall. e. A new trait appearing in an offspring.
In the avian and mammalian eye, the lens remains stationary but changes shape in order to focus on objects at various distances. This is called "accommodation" and is accomplished through adjusting muscle control of the lens in order to
A. control the amount of light admitted to the eye through the pupil. B. alter the sensitivity of the eye to varying light levels. C. convert light energy into electrical signals by the retina. D. bend light rays to varying degrees according to the angle at which light enters the eye. E. regulate the vitreous humor volume.
The most probable number (MPN) technique is an approach that can be used to quantify the presence of a particular microbe whether or not that microbe is culturable.
Answer the following statement true (T) or false (F)