One function of integral membrane proteins in the plasma membrane of cells is to form channels to allow passage of nonpolar solutes into the cell.
Answer the following statement true (T) or false (F)
False
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A supramaximal stimulus produces which of the following?
A) the maximum frequency of action potentials that is possible B) an action potential that is slower than one produced by a maximal stimulus C) a greater frequency of action potentials than a maximal stimulus D) none of the above
The placenta begins to form after week 8
Indicate whether the statement is true or false
Following a stroke, Harriet has impaired sense of taste on one side of the tip of her tongue, indicating the part of her brain that was affected must communicate with the ________ nerve.
A. abducens B. vagus C. facial D. glossopharyngeal E. trigeminal
Which is correct about the contraction sequence of the heart?
A. Contraction begins in the order: right atrium, then right ventricle, then left atrium, then left ventricle. B. The atria and ventricles begin their contractions at the exact same time, but the atrial contraction only lasts half as long as the ventricle contraction. C. The contraction and relaxation of all four chambers happen at the same time. D. The two atria contract at the same time, and as they are relaxing, the two ventricles contract together. E. The right atrium and ventricle contract at the same time, and as they are relaxing, the left atrium and left ventricle begin to contract.