____ is a passive transport plasma membrane protein that forms a pore through which water (but not solutes) can flow freely across the membrane.
A. ADH
B. A sodium ion
C. Ketone bodies
D. Aquaporin
E. Angiotensinogen
Answer: D
You might also like to view...
Transcriptional control-proteins increase the rate of transcription by binding to
A. mRNA sequences within the DNA. B. tRNA sequences within the DNA. C. operator sequences within the DNA. D. promoter sequences within the DNA. E. enhancer sequences within the DNA.
Gonorrhea, a sexually transmitted disease, is an acute infection of the mucous membranes of the ________.
A. conjunctiva B. rectum C. genitourinary tract D. All of the choices are correct.
Beggiatoa are ________.
A. obligate aerobes B. microaerophiles C. obligate anaerobes D. facultative anaerobes
Formation of a lipid bilayer is energetically favorable. How does this arrangement result in higher entropy for the system, and thus make bilayer formation energetically favorable?
(a) Polar head groups form a hydrogen-bonding network at the interface with water. (b) Water molecules form cagelike structures around hydrophobic molecules. (c) Hydrogen bonds form between neighboring polar head groups in the bilayer. (d) Fatty acid tails are highly saturated and flexible.