What is the primary factor that determines if endocytosis or exocytosis would be needed to move a substance across the cell membrane as opposed to diffusion or osmosis?
1. the chemical properties of the molecules being moved
2. the size of the molecules being moved
3. the differences in concentration of the substance inside and outside the cell
4. whether water is being moved across the membrane
In endocytosis, a transport vesicle is derived from _____.
1. plasma membrane
2. ribosomes
3. Golgi complex
4. Lysosomes
Low density lipoproteins (LDL’s or bad cholesterol) are taken up “in-bulk” into the cytoplasm of a cell. This process is an example of
1. Endocytosis
2. Exocytosis
3. Molecular transport
4. Oosmosis
5. Diffusion
How the phagocytosis takes place in the immune system of cells?
Describe the uptake of cholesterol by the mammalian cells using receptor-mediated endocytosis.
What is protein trafficking? Explain with an example.
What is transcytosis? Explain with an example.
What are the two types of exocytosis? Explain with a schematic diagram.