Protists are NOT monophyletic. This means:
A. that all protists are of the same lineage
B. that all protists are more closely related to each other than they are to any other kind of organisms
C. that all protists are not more closely related to each other than they are to some other kinds of organisms
D. that all protists are not in the same phylum
E. that all protists are in the same phylum
C. that all protists are not more closely related to each other than they are to some other kinds of organisms
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A woman with normal blood clotting mates with a man who has hemophilia. Their first child is a boy who has
hemophilia. Tests show that the father and son both have the same form of hemophilia, that it is X-linked, and that the boy has normal genetic inheritance. You can predict that if the couple has more children together, it is likely that ____.
a. all of the children will have hemophilia b. half of the boys and none of the girls will have hemophilia c. none of the other children should have hemophilia d. all of the boys and half of the girls will have hemophilia e. half of the boys and half of the girls will have hemophilia
The brain knows how strong a stimulus is
because the brain interprets
a. action potentials of certain nerves in certain ways. b. variations in the rate of action potentials. c. the size variation in the action potential being propagated. d. all of these. e. all of these except size variation in the action potential being propagated
Actin filaments are stabilized by
a. cofilin. b. gelsolin. c. thymosin. d. tropomyosin. e. fimbrin.
Where is this molecule normally found in a eukaryotic cell?
A) cytosol
B) Golgi apparatus
C) nucleus
D) rough endoplasmic reticulum