Multiple Choice
The relative impermeability of membranes to water-soluble molecules is a result of the
A) nonpolar nature of water molecules.
B) presence of large integral membrane proteins.
C) presence of inorganic salt crystals scattered through some membranes.
D) presence of cutin and lignin in the membranes.
E) presence of phospholipids in the lipid bilayer.
Correct Answer:
Verified
Correct Answer:
Verified
Q30: Movement of a molecule against a concentration
Q30: During receptor-mediated endocytosis<br>A) plasma membrane receptors bind
Q40: Which of the following statements is NOT
Q41: Unsaturated tails of lipids<br>A)are hydrophilic.<br>B)are unstable and
Q43: The carrier molecules used in active transport
Q44: Which of the following affects the rate
Q45: The sodium-potassium pump is an example of<br>A)simple
Q47: A mutated form of the CFTR gene
Q49: Movement of matter or energy in nature
Q50: If a plasma membrane were compared to