1 The controlled release of cellular material stored in memb

1. The controlled release of cellular material stored in membrane-bound vesicles to the outside of the cell is an example of:

Select one:

a. exocytosis

b. endocytosis

c. transcytosis

d. phagocytosis

2.Which of the following eukaryotic cell structures plays a role in protein trafficking and sorting?

a. mitochondria

b. lysosomes

c. the Golgi apparatus

d. vacuoles

3. Which eukaryotic organelle is associated with the breakdown of macromolecules?

a. endoplasmic reticulum

b. the Golgi apparatus

c. mitochondria

d. lysosome

4. A proton pump is needed in the lysosomal membrane because:

a. the interior of the lysosome needs to be acidic.

b. protons are being moved from low to high concentration.

c. protons cannot move across a membrane on their own.

d. All of these choices are correct.

Answer:

1). a. exocytosis

Exo=outside

2). c. the Golgi apparatus

Endomembrane systems involve in the protein sorting and trafficking

3). d. Lysosomes

Lysosomes to help break down food particles that have been engulfed by the cells

4). d. All of these choices are correct.