Which phrase best describes homeostasis?
(a) the cell keeps more molecules inside the membrane.
(b) the cell keeps molecules balanced inside and out.
(c) the cell does not allow molecules to cross the membrane.
(d) the cell keeps most molecules outside the membrane.

The term equestrian relates to which animal? bulls cows horses pigs

Solutions to environmental problems in europe must

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer