When studying fluid and electrolyte loss during exercise, Robert Cade found that human sweat has sodium and chloride concentrations that are
A. higher than those found in the blood.
B. lower than those found in the blood.
C. equal to those found in the blood.
D. extremely variable from person to person relative to those found in the blood.
B. lower than those found in the blood.
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Which receptors allow you to respond to changes in muscle load?
a. muscle spindles b. cupula c. vestibular apparatus d. semicircular canals e. otoliths
Which of the following are classified as pyrimidines?
A) adenine and thymine B) guanine and cytosine C) adenine and guanine D) thymine and cytosine E) adenine and uracil
The four nucleotides that make up DNA contain a sugar component called ________
Fill in the blank(s) with correct word
Most bacterial cells can keep from bursting in a hypotonic environment because of:
a. a stiff capsule. b. a rigid cell wall. c. a tough cell membrane. d. an efficient water pump. e. pumping large quantities of salts into the cell.