The role of the cholesterol molecules (pink) in the phospholipid bilayer can best be described by what statement?
A) Cholesterol molecules allow ions to pass freely through the membrane.
B) Cholesterol molecules maintain the fluidity and integrity of the membrane.
C) Cholesterol molecules allow water to pass freely through the membrane.
D) Cholesterol molecules allow proteins to be actively transported through the membrane.

Explain why the plants cortex would serve as the best food source for animals

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

This question is only for applicants to scholars for medicine or scholars for dental medicine: what aspects about medicine (or dental medicine) intrigue you? describe how these aspects influence your life. (100-650 words)