Biochemist Erwin Chargaff found that in DNA there was a special relationship between individual bases that we now refer to as Chargaff's rule. His observation was that
A. A + T = C + G.
B. C = T and A = G.
C. A = T and G = C.
D. G = T and C = A.
Answer: C
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The portion of the nervous system that is associated with the control of involuntary activities is the
A) central nervous system. B) peripheral nervous system. C) autonomic nervous system. D) somatic nervous system. E) automatic nervous system.
The pollen grains of pine each consists of three cells
____________________ Indicate whether the statement is true or false.
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What will be an ideal response?