The equation A-PO4 + B ? A + B-PO4 would be catalyzed by which of the following classes of enzymes?
A) transferases
B) oxidoreductases
C) hydrolases
D) ligases
E) isomerases
A) transferases
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Which term describes the vital statistics of a population?
a. ecostatistics b. population ecology c. demographics
d. biostatistics e. community ecology
The polymerase chain reaction (PCR) uses ________ and a heat-resistant DNA polymerase to rapidly
increase the number of molecules of a DNA fragment. Fill in the blank(s) with the appropriate word(s).
Of the main types of cytoskeletal elements, which type is involved with helping stabilize the position of organelles within the cell and attaching a cell to adjacent cells?
a) microfilaments b) actin filaments c) myosin filaments d) microtubules e) intermediate filaments
Why is there free oxygen in the air?
A. Evaporation of the oceans liberated oxygen. B. It is a by-product of photosynthesis. C. Organisms need oxygen to manufacture ATP. D. Free oxygen has seeped from cracks in the earth's crust. E. Free oxygen has been present since the formation of the earth's atmosphere.