Question

question 10
what is the combination of an electrical gradient and a concentration gradient called?
potential gradient
electrical potential
concentration potential
electrochemical gradient
passive gradient
question 11
what happens to the membrane of a vesicle after exocytosis?
it leaves the cell.
it is disassembled by the cell.
it fuses with and becomes part of the plasma membrane.
it is used again in another exocytosis event.
none of these answer choices are correct.
question 12
which transport mechanism can bring whole cells into a cell?
pinocytosis
phagocytosis
facilitated transport
primary active transport
secondary active transport

Explanation:

• For Question 10: An electrochemical gradient is the combination of an electrical gradient and a concentration gradient. It drives the movement of ions across membranes.
• For Question 11: During exocytosis, the vesicle membrane fuses with the plasma membrane and becomes part of it, allowing the vesicle's contents to be released outside the cell.
• For Question 12: Phagocytosis is the process by which a cell engulfs whole cells or large particles. Pinocytosis is for taking in fluids and small - solutes, facilitated transport is for specific molecules with the help of transporters, and primary/secondary active transport are for moving substances against their concentration gradient using energy.

Answer:

Question 10: electrochemical gradient
Question 11: It fuses with and becomes part of the plasma membrane.
Question 12: phagocytosis