C20 Tissues and Cancer

Question 1

Tissues are composed of ? plus ?

Answer 1

cells plus extracellular matrix

Question 2

plant cells surround selves with ECM of ? made of ?

Answer 2

cell wall, cellulose

Question 3

controls orientation of plant growth

Answer 3

deposition of cellulose

Question 4

fibroblasts

Answer 4

type of cell that synthesizes the extracellular matrix and collagen, the structural framework (stroma) for animal tissues, and plays a critical role in wound healing

Question 5

animals ECM tensile strength provided by ?

Answer 5

collagen

Question 6

link extracellular matrix proteins to intracellular cytoskeleton

Answer 6

integrins

Question 7

act as space fillers and resist compression

Answer 7

proteoglycans

Question 8

proteoglycans formed from ? linked to proteins

Answer 8

GAGs (glycosaminoglycans)

Question 9

line all internal and external surfaces of animal body

Answer 9

epithelial sheets

Question 10

? proteins span epithelial cell membranes and attach to similar ones in other epithelial cells

Answer 10

cadherins

Question 11

adherins junction

Answer 11

cadherins linked intracellularly to actin filaments

Question 12

desmosome junction

Answer 12

cadherins linked to keratin filaments

Question 13

tight junctions

Answer 13

seals neighboring cells together to prevent leakage

Question 14

hemidesmosome junction

Answer 14

anchors intermediate filaments to basal lamina

Question 15

gap junction

Answer 15

create small pores that connect cells

Question 16

? in plant cells are similar to gap junctions

Answer 16

plasmodesmata

Question 17

G-protein in mitogen activated signaling

Answer 17

Ras

Question 18

chronic myeloid leukemia is often the result of a specific chromosome translocation that increases activity of ?

Answer 18

abl

Question 19

sonic hedgehog

Answer 19

provides positional information