4.5 The Cytoskeleton

Question 1

cytoskeleton

Answer 1

Maintains cell’s shape, secures organelles in specific
positions, allows cytoplasm and vesicles to move within cell,
and enables unicellular organisms to move independently

Question 2

microfilaments

Answer 2

the narrowest protein fiber

function in cellular movement

Question 3

Intermediate filaments

Answer 3

purely structural

Question 4

microtubules

Answer 4

small hollow tubes
help the cell resist compression, provide a track along which vesicles move through the cell, and pull
replicated chromosomes to opposite ends of a dividing cell

Question 5

flagella

Answer 5

long, hair-like structures that extend from the plasma membrane and enable an entire cell
to move

Question 6

cilia

Answer 6

short, hair-like structures that move entire cells