Use the Following to Answer the Following Questions -Microfilaments Are Well Known for Their Role in Which of Are

question 57

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}$

-Microfilaments are well known for their role in which of the following?

• A)ameboid movement
• B)formation of cleavage furrows
• C)contracting of muscle cells
• D)A and B only
• E)A, B, and C

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Definitions:

Motivated Forgetting

A theoretical process in which individuals may unconsciously block memories of traumatizing or negative experiences.

Misinformation Effect

The phenomenon that occurs when a person's recall of episodic memories becomes less accurate because of post-event information.

Spacing Effect

The phenomenon that information is better retained when study sessions are spaced out over time rather than crammed in a short period.

Source Amnesia

A memory disorder where an individual can remember certain information but is unable to recall how, when, or where they learned it.