Unstable isotopes can be useful
A. catalysts.
B. in medical diagnosis.
C. in vitamins.
D. in the formation of hydrogen bonds.
E. as buffers.
Answer: B
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. A network of protein filaments called ____ lines and reinforces the inner surface of the nuclear
envelope in animal cells.
a. actins b. chromatins c. lamins d. tubulins e. lamellae
The electron micrograph above shows chromatin organized like "beads on a string." At this level of
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The stage of the Plasmodium parasite that is transmitted to humans by the bite of a mosquito is the ________
a. merozoite b. gametocyte c. sporozoite d. zygote