Cell Signaling

Animation

Video

Video Player is loading.

Current Time 0:00

Duration 0:00

Loaded: 0%

Stream Type LIVE

Remaining Time -0:00

Chapters

descriptions off, selected

captions settings, opens captions settings dialog
captions off, selected
English Captions

This is a modal window.

Beginning of dialog window. Escape will cancel and close the window.

TextColorTransparency

BackgroundColorTransparency

WindowColorTransparency

Font Size

Text Edge Style

Font Family

End of dialog window.

This is a modal window. This modal can be closed by pressing the Escape key or activating the close button.

This is a modal window.

Animation Assessment

Question 1 of 5

Fill in the blank: When cells communicate by the signaling process, one cell produces a BLANK that must be received by the BLANK on or in the responding cell.

Question 1 choicesChoice A., signaling particle; signal enzymeChoice B., signaling molecule; signal receptorChoice C., hydrophilic signal; hydrophilic receptorChoice D., cell division signal; plasma membraneChoice E., nonpolar signal; nonpolar receptor

Correct.

Incorrect.

Question 2 of 5

Fill in the blank: Signal molecules that are BLANK usually have their corresponding receptor BLANK of the cell.

Question 2 choicesChoice A., nonpolar; on the surfaceChoice B., polar; in the cytoplasmChoice C., polar; on the surface

Correct.

Incorrect.

Question 3 of 5

Fill in the blank: A receptor that is inside the cell would require a BLANK signal molecule that can BLANK the plasma membrane.

Question 3 choicesChoice A., polar; pass throughChoice B., polar; bind toChoice C., nonpolar; pass throughChoice D., nonpolar; bind to

Correct.

Incorrect.

Question 4 of 5

Fill in the blank: A BLANK expresses a gene or genes that direct production of the signaling molecule, and the BLANK expresses a gene or genes that direct production of the BLANK.

Question 4 choicesChoice A., signaling cell; responding cell; receptor proteinChoice B., responding cell; signaling cell; receptor proteinChoice C., signaling molecule; responding cell; signaling cellChoice D., responding cell; receptor protein; signal protein

Correct.

Incorrect.

Question 5 of 5

One example of a cellular response to a signal is the triggering of cell division. If a mutation occurred in the gene for the signal receptor in this pathway that caused the receptor to reject binding of the signal, what response can be predicted?

Question 5 choicesChoice A., The cell does not divide.Choice B., The cell divides repeatedly without the signal.Choice C., The signal is not produced.

Correct.

Incorrect.

Assessment Summary

Activity results are being submitted...