Question

question 1 (1 point)
which active transport process takes place to transport certain substances out of the cell through the fusion of a vesicle with the cell membrane?
o a carrier protein
o b channel protein
o c endocytosis
o d exocytosis
question 2 (1 point)
how would sugar entering a cell that already contains a high concentration of sugar get through a cell membrane and into a cell?
o a osmosis
o b active transport
o c passive transport
o d sugar does not move from an area of low concentration to an area of high concentration

Explanation:

• Question 1: Exocytosis is the process where a vesicle fuses with the cell membrane to transport substances out of the cell. Carrier and channel proteins are involved in facilitated diffusion or active transport across the membrane (not vesicle - membrane fusion). Endocytosis is the process of bringing substances into the cell.
• Question 2: Active transport is used when a substance (like sugar in this case) needs to move against its concentration gradient (from an area of low concentration to an area of high concentration). Osmosis is the movement of water. Passive transport (like simple diffusion or facilitated diffusion) occurs along the concentration gradient.

Answer:

Question 1: d. exocytosis
Question 2: b. active transport