Answer:
b. The surfaces of the membrane are nonpermeable.
Explanation:
This helps the cell membrane to protect the cell.
The lymph nodes are the lymphoid organs that serve in immune surveillance and in filtering lymph. They <span>are found in the neck, armpits, and groin areas. If a lymph node is swollen it means that there is an infection or injury.If you notice swollen lymph node you should see your doctor.</span>
Answer:
Antony Van Leeuwenhoek
Explanation:
Discovering bacteria and creating more than 500 simple microscopes
Answer:
Theodor Schwann and Matthias Jakob Schleiden
Explanation:
