Module 21 Signal Transduction Quiz

Which type of signaling molecule dissolves in water easily?

• Polar

• Hydrophobic

• Hydrophilic

• Nonpolar

Where are the receptor proteins located for hydrophilic signaling molecules?

• In the cytoplasm

• In the nucleus

• On the surface of the cell

• Inside the cell

What type of receptor protein uses kinase to transfer phosphate to a protein, resulting in a cell response?

• G protein-coupled receptors

• Receptor protein kinase

• Ligand-Gated Ion Channels

• Intracellular receptors

Which type of signaling utilizes intracellular receptors and leads to changes in gene expression?

• Receptor protein kinase signaling

• Hydrophobic signaling

• Hydrophilic signaling

• G protein-coupled signaling

What is the function of a ligand-Gated Ion Channel?

• Transfers phosphate group from ATP to proteins

• Opens and closes in response to a ligand

• Passes the message onto its neighbor

• Changes shape of the protein resulting in cell response

Which type of signaling molecule does not dissolve in water?

• Polar

• Nonpolar

• Hydrophobic

• Hydrophilic

What is the main characteristic of hydrophobic signaling?

• Receptor proteins on the surface of the cell

• Quick action

• Utilizes intracellular receptors

• Dissolves in water easily

What type of signaling molecule has a slow response but longer effect?

• Hydrophilic

• Polar

• Hydrophobic

• Dissolves in water easily

What is the function of a G protein-coupled receptor?

• Opens and closes in response to a ligand

• Changes shape of the protein resulting in cell response

• Passes the message onto its neighbor

• Uses kinase to transfer phosphate to a protein

Which type of signaling molecule leads to changes in gene expression by interacting with the cell nucleus?

• Hydrophilic

• Polar

• Hydrophobic

• Dissolves in water easily