3.3.1 The Cytoskeleton: Basic Components Flashcards


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1

Which of the following are components of a eukaryotic cell’s cytoskeleton?

1. actin filaments

2. microtubules

3. intermediate filaments

4. all of the above

4. all of the above

2

Microtubules play an integral role in __________, while the microfilaments are involved in __________.

the movement of chromosomes, cell division

3

A major difference between microtubules and microfilaments are

Microtubules are hollow cylindrical molecules, whereas microfilaments are not.

4

The cytoskeleton of a cell functions to allow ____________ to move, ___________ organelles, provide structure and support.

to allow organelles to move, anchor organelles

5

True or False?

The movement of muscle fibers is a function of microtubules.

False

Explanation:
Microfilaments, not microtubules, play an important role in muscle contraction.

6

The cytoskeleton consists of a series of fibers and filaments that are responsible

for maintaining the cell’s shape

7

The three main types of protein fibers are ________ __________, medium-sized ____________ filaments, and large _____________.

thin microfilaments, medium-sized intermediate filaments, and large microtubules.