Because steroid hormones are lipid soluble, they
A) dissolve easily in water.
B) must bind to receptor proteins on the surface of the plasma membrane.
C) only affect muscle cells with high lipid content.
D) are repelled by the plasma membrane.
E) can pass through the plasma membrane.
E
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You are performing a karyotype for the first time and you forget to add the colchicine. How do you predict this will affect your karyotype?
A. No affect - your karyotype will look normal. B. You will be unable to see any chromosomes under the microscope. C. You will only be able to see one of each chromosome. D. The chromosomes in some cells will look normal (highly compacted) but in other cells distinct chromosomes will be hard to identify
Destruction of the ozone due to pollutants is limited to layers located only above the South American continent
Indicate whether the statement is true or false
An unprotected area of naturally occurring plant and animal assemblages that is surrounded by unsuitable territory due
to development or habitat destruction is referred to by biologists as: a. an island. b. ex situ conservation. c. a reserve. d. a park. e. a refuge.
Archaeal cell walls have the same chemical composition as bacterial cell walls.
a. true b. false