All life forms on Earth exist either as single cells or as collections of cells that have a plasmamembrane at their periphery (though some cells have cell walls outside their plasmamembrane). Why do you think the plasmamembrane exists in all living things? Why aren't there living things that don't have a membrane at their per
The integrity of the plasmamembrane is essential for cellular survival.
a. Could the immune system utilize this fact to destroy foreign cells that have invaded the body?
b. How might cells of the immune system disrupt membranes of foreign cells?
Whats the difference between transport vesicles, secretory vesicles, and endocytotic vesicles?
I know that Transport vesicles move molecules between locations inside the cell. For example they move proteins from the ER to the Golgi, from there to the outer membrane, where they are secreted
a. is engulfment of large particles by the cell
b. occurs in protozoans and algae but not in more complex organisms
c. involves the specific binding of molecules to receptors on the cell surface
d. is the non specific uptake of fluids by pinching inward of the plasmamembrane
e. is movement of molecules
I need help this this problem. Please explain what happen in each case.
9) A bacterium is suddenly expelled from a warm human intestine into the cold world outside. Predict what kind of adjustments the bacterium might make to maintain the same level of membrane fluidity?
A. decrease the amount of glycolipids in the membrane
1. The structure of the plasmamembrane is best described as
a. a single layer of phospholipids, in which the phosphate groups face the interior of the cell
b. a single layer of phospholipids, in which the phosphate groups face the extracellular space
c. lipid bilayer, in which the phosphate groups on the phos