5. Other Structural Elements of the Cell Part 2

Question 1

What is amoeboid movement?

Answer 1

changes in cytoplasmic structure which cause the cytoplasm and the rest of the cell to flow in one direction

Question 2

What are intermediate filaments?

Answer 2

heterogenous, composed of a wide range of polypeptides

Question 3

What is the purpose of intermediate filaments?

Answer 3

provide strong cell structure and resist mechanical stress

Question 4

What are the three cell junctions?

Answer 4

tight junctions
desmosomes
gap junctions

Question 5

What are tight junctions also known as?

Answer 5

occluding junctions

Question 6

What are tight junctions?

Answer 6

seal between the membranes of adjacent cells that blocks the flow of molecules across the entire cell layer

Question 7

What are desmosomes?

Answer 7

spots along the cell that hold the cells together

Question 8

What are desmosomes composed of?

Answer 8

fibers that span the plasma membrane of two cells

Question 9

What is keratin?

Answer 9

protein that will form a plaque that anchors desmosomes to the plasma membranes

Question 10

What are gap junctions?

Answer 10

pore-like connections between adjacent cells that allow cytoplasms to mix

Question 11

What can fit through gap junctions?

Answer 11

ions, amino acids, and carbohydrates

Question 12

What cannot fit through gap junctions?

Answer 12

polypeptides and organelles