The Cytoskeleton And Cell Shape

Front 1

The cytoskeleton is made up of a network of three types of fibers:________, ________, and _________.

Back 1

Actin, myosin, intermediate filaments

Front 2

Actin molecules exist in either globular monomer form called _______, or in long filament form called _______.

Back 2

G-actin, F-actin

Front 3

Actin regulates complex movements such as _________ and pseudopod __________.

Back 3

Phagocytosis, extension

Front 4

As actin microfilaments grow, they trap _____ within their structure and then _______ it to disassemble.

Back 4

ATP, hydrolyze

Front 5

________ are motor proteins that enable actin and other filaments to pull along one another in a ________ motion.

Back 5

Myosins, shearing or contractile

Front 6

Microtubules can rapidly shrink and grow from the centrosome to transport _______, ________, and __________

Back 6

Vesicles, organelles, and chromosomes

Front 7

_________ are made of the protein tubulin, organized into a series of ______.

Back 7

Microtubules, rings

Front 8

As tubulin dimers fall off the ends of microtubules, _____ is hydrolyzed.

Back 8

GTP

Front 9

The 9+2 structure (nine pairs surrounding two central microtubules) is the arrangement for _________ and ________.

Back 9

Cilia, flagella

Front 10

Both cilia and flagella are anchored in the cell membrane by arrangement of microtubule triplets called _________.

Back 10

Basal bodies

Front 11

________ have the same structure as basal bodies.

Back 11

Centrioles

Front 12

What is the function of the centrioles?

Back 12

To anchor microtubules to the chromosomes, so that sister chromatids are pulled apart from one another

Front 13

Intermediate filaments are thicker than _______ but thinner than _______.

Back 13

actin filaments, myosin filaments

Front 14

Where are intermediate filaments found?

Back 14

Beneath the nuclear membrane and throughout the cytoplasm

Front 15

Keratins, laminins and vimentin are examples of ___________ filaments.

Back 15

Intermediate