AP Bio Cell Signaling

A signal molecule that binds to a plasma-membrane protein is a

• ligand

• second messenger

• protein kinase

• receptor protein

What type of transmembrane receptor is being shown?

• G-protein receptor
• tyrosine kinase receptor
• gated ion channel

What type of transmembrane receptor is being shown?

• gated ion channel
• G-protein receptor
• tyrosine kinase receptor

What determines whether a cell is a target cell for a particular signal molecule?

• phosphorylation cascade
• cAMP
• signal receptors
• phosphatase

Type of cell signaling where the ligand is produced at a location distant from its target cell(s)

• autocrine signaling

• juxtracrine signaling

• paracrine signaling

• endocrine signaling

What is being depicted in the image?

• Amplification of the signal molecule

• Enzymatic proteins inhibiting process of the signal transduction pathway

• Kinase groups adding dimer groups to other enzymes

• Diffusion of molecules within the cell due to the signaling molecule

Tags

NGSS.HS-LS2-3

Testosterone does not affect all cells of the body because __________.

• testosterone cannot cross the plasma membrane

• not all cells have cytoplasmic receptors for testosterone

• not all cells in the body have membrane receptors for testosterone

• it is a local regulator

• it affects only cells that have ion-channel receptors

Which of the following is a chemical message that usually travels through the bloodstream to target cells?

• hormone
• local regulator
• endocrine cell

The 3 steps of signal transduction in order are

• reception, transduction, response
• response, transduction, reception
• reception, response, transduction
• transduction, reception, response

This is an example of

• paracrine signaling

• endocrine signaling

• autocrine signaling

• juxtacrine signaling