20.which of the following is true regarding residual air in thealceoli? seect all that appy
a. mixes with newly-inspired air,reducing exugen pressure inthe alveoli and reducing oxygen uptake efficinecy in mammallings
b. prevents the alveoli from collapsing during life
c. is a primary source of nitrogen gas absorbed in thelungs
d. can be forcefully exhaled in certain circumstances such asintense strenuous activity
35. A neurotransmitter which binds a G protein-linked receptorwould likely exhibit a _______ response relative to aneurotransmitter which binds a ligand gated ion channel.
A. slower to develop, and a smaller scale response localizesto a single region of the cell
B faster to develop, but longer and more cell-wideresponde
C. slower to develop, but larger scale and more cell-woderesponse
37. The half-life of a hormone allows one to determine....select all that apply
a. the rate at which hormones are eliminated from thebody
b. the identity of a hormone
c. the rate of action of a hormone
d. the rate of travel through the blood to a target
