Which of the following statements concerning cyclin-dependent kinases (CDKs) is NOT true?
A. CDKs are enzymes that attach phosphate
groups to other proteins.
B. CDKs are active, or "turned on," when
complexed with cyclins.
C. CDKs are present throughout the cell
cycle.
D. CDKs are inactive, or "turned off," in the
presence of cyclins.
D
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Plant hormones produce their effects by _____
I) altering the expression of genes II) modifying the permeability of the plasma membrane III) modifying the structure of the nuclear envelope membrane A) only I B) only II C) only III D) only I and II E) I, II, and III
The organism with the highest fitness is:
A. An animal that lives 2 years and produces 10 offspring per year. B. An animal that lives 100 years and produces 10 offspring total. C. An animal that lives one year and produces 10 offspring total. D. An animal that lives 10 years and produces 2 offspring per year. E. An animal that lives 10 years and produces 10 offspring per year.
Escherichia coli is a good indicator of fecal contamination of water supplies.
Answer the following statement true (T) or false (F)
In indirect fluorescent testing, fluorescent _____ are used to react with the Fc region of another, specific, serum antibody.
Fill in the blank(s) with the appropriate word(s).