Ch 20 - Cell Connectors: Tissues, Stem Cells, and Cancer - Quiz

Question 1

Fibroblasts are a type of animal cell primarily responsible for which of the following functions?
Secretion of matrix
forming tight boundaries
providing quick communication between cells
forming rigid support

Answer 1

Secretion of matrix

Question 2

True or False: Cellulose fibers are secreted extracellularly by animal cells.

Answer 2

False

Question 3

True or False: Integrins connect directly to the extracellular matrix.

Answer 3

False

Question 4

How would you classify the tissue shown in this image?

Answer 4

Simple columnar;

classify based off top tissue.

Question 5

Which cytoskeletal element plays a major role in the development on the neural tube?

Answer 5

Actin/myosin

Question 6

which of the following most accurately describes desmosomes?
Utilizes cadherins and intermediate filaments
Utilizes cadherins and actin filaments
Utilizes integrins and intermediate filaments
Utilizes integrins and actin filaments

Answer 6

utilizes cadherins and intermediate filaments

Question 7

which type of junction would you expect to find on the inferior surface of an epithelial layer?

Answer 7

hemidesmosomes

Question 8

keratin filaments would be most likely associated with which of the following junction types?
Hemidesmosomes
Gap Junctions 
Tight Junctions
Adherens Junctions

Answer 8

Hemidesmosomes

Question 9

What is the order of collagen formation?

Answer 9

1. procollagen
2. collagen molecule
3. fibril formation
4. collagen fiber