Bulk transport by endocytosis
a. removes existing portions of the plasma (cell) membrane.
b. adds new portions of the plasma (cell) membrane.
c. has no effect on existing plasma (cell) membrane.
d. results in materials leaving the cell.
The molecule cholesterol plays an important role in
a. keeping membranes liquid at low temperature.
b. keeping membranes solid at high temperature.
c. both a and b.
d. neither a nor b.
The emergent properties of water (cohesion, high heat capacity, good solvent) come from the fact that water is ______ and ______ hydrogen bond.
a. polar, can
b. polar, cannot
c. non-polar, can
d. non-polar, cannot
The molecule below is considered a monomer of
d. nucleic acid.
The molecule below is the currency of energy used in cells. Its energy is located in the bonds connecting the
a. two rings of the nitrogen base.
b. nitrogen base and sugar.
c. sugar and phosphate.
d. two terminal (end) phosphates.