Cerebrospinal fluid functions to _____ the brain

cushion
nourish
support
all of the above


D. all of the above

Biology & Microbiology

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The root apical meristem is surrounded and protected by a structure called the

a. endodermis. b. root cap. c. quiescent center. d. pericycle. e. root hairs.

Biology & Microbiology

The proteins of the cell membrane are

a. enzymes. b. channels through the membrane. c. transporters that move substances across the membrane. d. receptors. e. all of these.

Biology & Microbiology

When considered as a root cause for cancer, which of the following is linked to at least 17 types of human cancer?

A) eating a high-fat diet B) not exercising regularly C) eating a low-fat diet D) smoking

Biology & Microbiology

________ breaks frozen specimens along lines of greatest weakness, often down the middle of lipid bilayer membranes so that they may be observed by transmission electron microscopy.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology