The primary function of lymph nodes in the circulatory system is in _________
a. regulation of blood pressure
b. production of red blood cells
c. production of platelets
d. immunity
e. gas exchange
Answer: d. immunity
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Under what circumstances does membrane transport require energy?
A) wherever large molecules are moved within a cell B) whenever a solute is moved against its electrochemical gradient C) whenever an ion moves through a phospholipid bilayer membrane D) whenever oxygen moves through a phospholipid bilayer membrane
Heritability is the amount of genetic variation in a particular population and a particular environment
Indicate whether the statement is true or false
Fungi generally digest large organic molecules
a. in special compartments called arbuscules. b. within feeding hyphae. c. in visible mushrooms. d. in special compartments called haustoria. e. outside of their cells.
In a neuron at rest, there is a(n) higher concentration of sodium ions outside the cell than inside
____________________ Indicate whether the statement is true or false.