Cell Communication Basics

An example of LOCAL cell communication is:

• White blood cells bumping into each other sharing antigen info

• Neurons communicating across a synapse

• Hormones traveling through the blood stream to target tissues

An example of DIRECT cell communication is:

• White blood cells bumping into each other sharing antigen info

• Neurons communicating across a synapse

• Hormones traveling through the blood stream to target tissues

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

• ligand
• second messenger
• protein kinase
• receptor protein

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

• phosphorylation cascade
• cAMP
• signal receptors
• phosphatase

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

• hormone

• local regulator

• endocrine cell

• plasmodesmata

What does a protein kinase do?

• removes phosphates
• transfers phosphates from ATP to proteins
• activates an enzyme

Cells can communicate with one another via:

• chemical messengers

• hormones

• gap junctions

• all of these

Choose the correct order of communication.

• reception, response, transduction

• transduction, reception, response

• response, transduction, reception

• reception, transduction, response

All signals and receptors are the same in all cells.

• True

• False

Tags

NGSS.HS-LS1-2

Long distance signals involving hormones are ________ signals.

• paracrine

• synaptic

• endocrine