Spy hopping is a term given to whales when they:
a. jump out of the water.
b. partially get their body out of the water.
c. capture their food.
d. mate.
e. play in groups.
B
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Epithelial tissues covers ________.
A. the outer lining of blood vessels B. the outer lining of intestines C. the outer layer of skin D. All of the above are covered by epithelial tissues
A DNA library is
A. a collection of recombinant vectors containing DNA fragments of a given organism. B. a collection of books about clones. C. a line of bacteria that contains a DNA fragment of interest. D. a series of restriction enzymes that can be used to produce a variety of sizes of DNA fragments. E. a collection of recombinant plasmids containing a particular gene from many different organisms.
The class of organic molecules characterized by their insolubility in water is the
a. carbohydrates. b. lipids. c. proteins. d. ions. e. nucleic acids.
Infection by all influenza strains can be prevented with vaccines
Indicate whether the statement is true or false