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Use the Following to Answer the Following Questions -If an Individual Has Abnormal Microtubules, Due to a Hereditary

question 24

Multiple Choice

Use the following to answer the following questions. All three are involved in maintenance of cell shape.
$\begin{array}{c}\begin{array}{|l}\hline\\ \text {Property}\\\hline\\\\ \text {Structure}\\\hline\\ \text {Diameter}\\\hline \text {Main}\\\text {functions}\\\hline \end{array}\begin{array}{|l|}\hline \text { Microtubules (tubulin}\\\text { polymers) }\\\hline \text {Hollow tubes; wall}\\ \text {consists of 13 columns}\\ \text {of tubulin molecules}\\\hline \text {$ 25 \mathrm{~nm} $ with 15-nm}\\ \text {lumen}\\\hline\\ \text {Cell motility}\\\hline \end{array}\begin{array}{l|}\hline \text { Microfilaments (actin}\\ \text { filaments) }\\\hline \text { Two intertwined strands}\\ \text { of actin, each a polymer }\\ \text { of actin subunits}\\\hline\\ \text { $ 7 \mathrm{~nm} $ }\\\hline\\ \text { Cell motility}\\\hline \end{array}\begin{array}{l|}\hline \text {Intermediate}\\ \text {filaments}\\\hline \text {Fibrous proteins }\\ \text {supercoiled into}\\ \text { thicker cables}\\\hline\\ \text {8-12nm}\\\hline\\ \text {Anchorage}\\\hline\end{array}\end{array}$

-If an individual has abnormal microtubules, due to a hereditary condition, in which organs or tissues would you expect dysfunction?

Definitions:

Neuroglia

are supportive cells in the nervous system, providing structure, protection, and nutrition to neurons.

Nerve Cells

Specialized cells that transmit electrical signals throughout the body, also known as neurons.

Dendrites

Branch-like extensions of neurons that receive signals from other neurons or sensory stimuli.

Axon

A long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.