Topic 4.1 - Cell Communication

To respond to a signal, a cell must have a(n) _______ molecule that can detect the signal.

• paracrine

• receptor

• autocrine

• responder

Chemical signals reaching a cell deep inside a multicellular organism may come from

• the brain.

• the lymphatic system.

• glands.

• other cell types.

A molecule that binds to the particular three-dimensional structure of a receptor site is known as a(n)

• regulator

• ligand

• receptor

• ion channel

A signal made by an animal cell that affects that same cell is a(n) _______ and a signal that is made by an animal cell and that diffuses to and affects a nearby cell is a(n) _______.

• paracrine signal; autocrine signal

• hormone; autocrine signal

• autocrine signal; paracrine signal

• paracrine signal; hormone

Paracrine signals

• act on the cells that made them.

• move through the blood and act on cells far from their source.

• act on cells that are near to those that secrete them.

• do not act through receptors.

What do you call it when two neurons communicate through neurotransmitters?

• Hormones
• Synapse
• Cholesterol
• Monty

What is an organic compound that is made by glands in the body (pituitary, thyroid, etc) that is used in long distance communication between cells?

• Hormones
• Neurotransmitters
• Synapse
• Carbohydrates

This biomolecule is used to make energy for our cells. The simplest is glucose, a monosaccharide.

• Carbohydrates
• Lipids
• Nucleic Acids
• Proteins

Tags

NGSS.HS-LS1-6

NGSS.HS-LS1-7

Which of the following can activate a protein by transferring a phosphate group to it?

• cAMP
• G Protein
• protein kinase
• protein phosphatase

Hormones are used in ____ signaling.

• endocrine
• juxtacrine
• autocrine
• paracrine