Thyroxine is an amino acid-derived hormone that binds to plasma membrane receptors on the surface of target cells
Indicate whether the statement is true or false
FALSE
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A graded, subthreshold change in the postsynaptic membrane potential that moves it toward threshold is called a(n)
____.
a. IPSP b. hyperpolarization c. EPSP d. depolarization e. repolarization
Toxic elements such as mercury are found in
the human body because a. of contamination from the environment. b. trace amounts of these elements have vital biological functions. c. they are needed to kill bacteria. d. they may be ingested with food but inactivated by cells. e. in small amounts they are biologically inactive and tolerated by cells.
An archegoniophore is found in certain liverworts
____________________ Indicate whether the statement is true or false.
What could be rejected using scientific observations?
What will be an ideal response?