Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:**Question:**
Which image best represents what overexpression of Formin would do to a cell?
**Images:**
- **Image A:** Shows a round cell with a well-defined outline and visible structures inside, resembling a relatively normal morphology.
- **Image B:** Displays a cell with a slightly irregular shape and denser structures, possibly indicating enhanced cytoskeletal elements.
- **Image C:** Features a more irregular and spread-out cell shape, suggesting increased protrusion and extension.
- **Image D:** Contains a cell with highly prominent and abundant filamentous structures extending across the cell, indicating extensive cytoskeletal formation.
**Options:**
- ○ D
- ○ C
- ○ B
- ○ A
**Analysis:**
The images show different cell morphologies potentially caused by varying levels of cytoskeletal activity. The overexpression of Formin, a protein involved in the polymerization of actin filaments, typically leads to increased actin filament production and elongation. Therefore, the image that best represents the effects of Formin overexpression is likely to depict extensive actin filaments.
**Correct Answer:** ○ D
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