Exam (Ch10)

Question 1

Cytoskeleton

Answer 1

internal protein scaffold that helps cells maintain shape

Question 2

Cell Junctions

Answer 2

complex of proteins in plasma membrane where a cell makes contact with another cell

Question 3

Extracellular Matrix

Answer 3

meshwork of proteins & polysaccharides outside the cell

Question 4

Composition of epidermis

Answer 4

keratinocytes & melanocytes

Question 5

Keratinocytes

Answer 5

Protect tissue; connected by basal lamina through cell junctions

Question 6

Microtubules & its motor protein(s)

Answer 6

Hollow, tubelike polymer of tubulin dimers that make up cytoskeleton; kinesin and dynein

Question 7

Microfilaments & its motor protein(s)

Answer 7

Double helix of actin monomers; myosin

Question 8

Intermediate filaments

Answer 8

Animal cells; strong fiber; polymers of proteins vary according to cell type

Question 9

Kinesin

Answer 9

transports cargo toward the plus end of microtubules

Question 10

Dynein

Answer 10

carries cargo away from the plasma membrane toward the minus ends of microtubules

Question 11

Myosin

Answer 11

carries cargo to the plus ends of microfilaments; used by both striated and smooth muscles to contract and generate force

Question 12

Adherens Junction

Answer 12

Component: Cadherins
Cytoskeleton: Microfilaments
Primary Function: cell-cell adhesion

Question 13

Desmosomes

Answer 13

Component: Cadherins
Cytoskeleton: Intermediate Filaments
Primary Function: cell-cell adhesion

Question 14

Hemidesmosome

Answer 14

Component: Integrins
Cytoskeleton: Intermediate Filaments
Primary Function: cell-extracellular matrix adhesion

Question 15

Tight Junction

Answer 15

Component: Claudins, occludins
Primary Function: Barrier; Epithelial boundary

Question 16

Gap Junction

Answer 16

Component: Connexins
Primary Function: Communication between animal cells

Question 17

Plasmodesma

Answer 17

Component: Cell membrane
Primary Function: Communication between plant cells