Compared to the extracellular fluid, cytosol contains
A) a higher concentration of potassium ions.
B) a lower concentration of dissolved proteins.
C) almost no glycogen.
D) a higher concentration of amino acids.
E) almost no lipids.
A
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A lymph nodule contains a germinal center surrounded by a region containing T-lymphocytes, dendritic cells, and macrophages; this outer region is known as a ________ zone.
Fill in the blank(s) with the appropriate word(s).
The medullary cavity of a long bone is lined with a thin cellular layer called
______. Fill in the blank(s) with correct word
The part of the hair that extends beyond the skin surface is called the
A. bulb. B. papilla. C. alopecia. D. root. E. shaft.
The erythrocyte (red blood cell) count increases after a while when an individual goes from a low to a high altitude because the ________
A) basal metabolic rate is higher at high altitudes B) concentration of oxygen and/or total atmospheric pressure is lower at high altitudes C) concentration of oxygen and/or total atmospheric pressure is higher at higher altitudes D) temperature is lower at higher altitudes