Quiz

QUIZ

1. What type of tissue mainly has tight junctions or zonula occludens?

a. Epithelial tissue b. Connective tissue c. Nervous tissue d. Muscle tissue

2. Which intercellular junction is most associated with impermeability?

a. Gap junctions b. Desmosomes c. Tight junctions d. Hemidesmosomes

3. Where in the human body are tight junctions between epithelial cells relatively permeable to certain ions but not to others?

a. Kidneys b. Brain c. Retina d. Bladder

4. Where can you least find desmosomes between epithelial cells?

a. Cardiac muscle b. GI tract c. Brain d. Bladder

5. Which cell connector makes use of integrin proteins in order to connect the cell to the basement membrane of an epithelial tissue?

a. Gap junctions b. Adherens junctions c. Hemidesmosomes d. Desmosomes

6. Which type of collagen is most associated with the formation of the basement membrane?

a. Type I b. Type II c. Type III d. Type VII

7. What is the main structure of collagen when seen with an electron microscope?

a. Globular b. Linear sheets c. Single helix d. Triple helix

8. What is the main function of collagen in connective tissue?

a. To provide elasticity b. For tensile strength c. For molecular transport d. For immune support

9. Which animal cell connection system is most similar to plasmodesmata seen in plant cells?

a. Adherens junctions b. Gap junctions c. Desmosomes d. Tight junctions

10. How to molecules get from cell to cell through the plasmodesmata between neighboring plant cells?

a. Simple diffusion b. Facilitated diffusion c. Active transport d. Exocytosis