AP Bio Unit 4 Quiz

Phosphorylation cascades are often used for

• reception

• responses

• amplification

• termination

What happens during reception in cell-signaling

• During reception in cell signaling, a signaling molecule (ligand) binds to a specific receptor on the surface of a target cell or inside the cell

• During reception, the signaling molecule is internalized into the cell

• During reception, the receptor activates an unrelated signaling pathway

If ATP were unavailable, what would be the effect on this pathway?

• Protein kinase A would not be produced

• GDP would not bind to the transmembrane protein

• The hormone would not bind to the transmembrane protein

• The secondary messenger would not be produced

Classify the image by their type of communication.

• Direct Contact (Animal Cell)

• Direct Contact (Plant Cell)

• Long Distance / Endocrine Signaling

• Local Signaling / Paracrine

• Local Signaling / Synaptic Signaling

What is direct contact communication in animal cells called?

• Gap Junctions

• Plasmodesmata

• Endosymbiosis

• Spongebob / Patrick Junction

What is the stage of signal transduction labeled A?

• Transduction

• Response

• Reception

• Endocrine

What is direct contact communication in plant cells called?

• Gap Junctions

• Plasmodesmata

• Endosymbiosis

• Spongebob / Patrick Junctions

Three basic steps of cell signaling

• reception

• transduction

• response

• integration

• translation

Cell Receptors can be found

• embedded in the plasma membrane of the cell

• in the cytoplasm or nucleus of the cell.

• floating freely in the extracellular fluid

• embedded in the mitochondrial membrane

What is the first step of signal transduction?

• Reception

• Response

• Transduction