Question

question 9
bacteria and other foreign particles that enter the body can be made harmless by
a. pinocytosis, which dissolves the foreign material.
b. phagocytosis by white blood cells.
c. exocytosis through vesicles that fuse with the cell membrane.
d. active transport of the foreign particles by a membrane pump.

question 10
in cell junctions, ____ seal intercellular spaces, __ reinforce attachments, and ____ allow for communication between cells.
a. junction proteins; adhesion molecules; connexins
b. keratins; desmosomes; connexins
c. tight junctions; desmosomes; gap junctions
d. desmosomes; gap junctions; tight junctions

Explanation:

For Question 9: Phagocytosis is the process by which white - blood cells engulf and digest bacteria and other foreign particles, making them harmless. Pinocytosis is the uptake of fluids and dissolved substances, exocytosis is the release of substances from the cell, and active transport is for moving substances across the membrane, not for neutralizing foreign particles.
For Question 10: Tight junctions seal intercellular spaces, desmosomes reinforce cell - to - cell attachments, and gap junctions allow for communication between cells by forming channels for the passage of small molecules.

Answer:

Question 9: B. phagocytosis by white blood cells.
Question 10: C. tight junctions; desmosomes; gap junctions