L5 - Cytoskeleton And Extracellular Matrix

Question 1

Components of cytoskeleton

Answer 1

Microtubules, microfilament, intermediate filaments

Question 2

Mirctobulues

Answer 2

Made of tubular dimmers

Question 3

Mircofilaments

Answer 3

Made of actin subunits, twisted in rope like structure

Question 4

Intermediate filaments

Answer 4

Made of keratin proteins or a fibrous subunit. Tightly twisted together

Question 5

Microtubules resist…

Answer 5

Compression

Question 6

Microtubules come from…

Answer 6

The centrosome, allows for organisation of Microtubules

Question 7

Microtubules make…

Answer 7

Flagella or cilia

Question 8

Flagella

Answer 8

Snake like motion

Question 9

Cilia

Answer 9

Rowing like motion

Question 10

Microtubules are involved in…

Answer 10

Organelle motility, ATP powered motor proteins walk along microtubules

Question 11

The ‘cell highway’

Answer 11

Microtubules

Question 12

Microfilaments are…

Answer 12

Linear strands, 3D networks using branching proteins

Question 13

Microfilaments resist…

Answer 13

Tension

Question 14

Microfilaments are in…

Answer 14

The cortical network, under the plasma membrane to give cell structure.

Question 15

Microfilaments work in…

Answer 15

Actin-myosin interactions to allow muscle cell contractions

Question 16

Non animal examples of microfilaments

Answer 16

Ameboid movement, cytoplasmic streaming

Question 17

Intermediate filaments are…

Answer 17

Made from various proteins depending on the cell function

Question 18

Intermediate filaments are…

Answer 18

Supercoiled into cables, more long lasting and less dynamic

Question 19

Intermediate filaments are for…

Answer 19

More permanent structure

Question 20

Intermediate filaments help…

Answer 20

Maintain cell shape, anchor organelles

Question 21

Intermediate filaments remain

Answer 21

After cell death the filaments remain and allow for protection in skin

Question 22

Tight junctions

Answer 22

Hold neighbouring cells pressed tightly together prevents movement of fluid across cells

Question 23

Desmosomes

Answer 23

Anchoring junction, act as rivets

Question 24

Desmosomes made of

Answer 24

Very strong preoriens

Question 25

Desmosomes are connected to

Answer 25

Intermediate filaments

Question 26

Tight junctions connected too

Answer 26

Microfilaments

Question 27

Gap junctions

Answer 27

Contact between cytoplasm of two cells

Question 28

Gap junction purpose

Answer 28

Allow rapid cell to cell communication and small molecules pass from cell to cell

Question 29

Gap junction strength

Answer 29

Weak

Question 30

Tight junctions

Answer 30

Prayer hand

Question 31

Desmosomes

Answer 31

Linked hands

Question 32

Gap junctions

Answer 32

Tube hands

Question 33

Extra Cellular Matrix are…

Answer 33

Dependant on the tissues, made by cells

Question 34

ECM

Answer 34

Extra Cellular Matrix

Question 35

ECM example

Answer 35

Bone tissue, cartilage, connective tissue

Question 36

ECM

Answer 36

Is made of secreted materials from constitutive exocytosis

Question 37

ECM proteins

Answer 37

Glycoproteins, proteins with added carbohydrates

Question 38

Abundant glycoprotein

Answer 38

Collagen

Question 39

Glycoproteins

Answer 39

Protein with added carbohydrates

Question 40

Collagen fibers are held in

Answer 40

Proteoglycan complex matrix

Question 41

Proteoglycans

Answer 41

Proteins with added sugar

Question 42

Proteoglycan purpose

Answer 42

Trap water within the ECM

Question 43

Fibroneftins

Answer 43

Attach cells to ECM

Question 44

integrins

Answer 44

Connect ECM to cytoskeleton

Question 45

Connection purpose

Answer 45

Provide a communication link from ECM to the cells interior