Quiz about AP - Unit 2: Cell Communication

Question 1

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

Accepted Answer

kinase

Answer

phosphatase

Question 2

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

Accepted Answer

ligand

Answer

second messenger

Answer

protein kinase

Answer

receptor protein

Question 3

What do second messengers do?

Accepted Answer

relay message from the inside of the mebrane throughout the cytoplasm

Answer

transport a signal through the lipid bilayer

Answer

relay a signal from the outside to the inside of the cell

Answer

dampen the message

Question 4

Signal amplification is most often achieved by

Accepted Answer

an enzyme cascade

Answer

binding of multiple signals

Answer

branching pathways

Answer

action of adenylyl cyclase

Question 5

The 3 steps of signal transduction in order are

Accepted Answer

reception, transduction, response

Answer

response, transduction, reception

Answer

reception, response, transduction

Answer

transduction, reception, response

Question 6

Protein kinases activate other relay proteins by adding a(n) ____ to them.

Accepted Answer

phosphate group

Answer

ATP molecule

Answer

cAMP

Answer

GTP

Question 7

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

Accepted Answer

signal receptors

Answer

phosphorylation cascade

Answer

cAMP

Answer

phosphatase

Question 8

This is an example of

Accepted Answer

short distance

Answer

cell to cell

Answer

long-distance signaling

Answer

autocrine

Question 9

This is an example of

Accepted Answer

cell to cell

Answer

short distance

Answer

long-distance signaling

Answer

autocrine

Question 10

This is an example of

Accepted Answer

long-distance signaling

Answer

short distance

Answer

cell to cell

Answer

autocrine

Question 11

This is an example of

Accepted Answer

autocrine

Answer

short distance

Answer

cell to cell

Answer

long-distance signaling

Question 12

Which type of membrane protein would help intake a message from outside of the cell to inside of the cell?

Accepted Answer

Receptor Protein

Answer

Enzymatic Protein

Answer

Channel Protein

Answer

Junction Protein

Question 13

After a ligand binds, the intracellular domain of a receptor protein changes _____, initiating transduction of the signal.

Accepted Answer

shape

Answer

color

Answer

size

Answer

temperature

Question 14

Phosphorylation __________.

Accepted Answer

can either activate or inactivate a protein

Answer

always inactivates a protein

Answer

always activates a protein

Question 15

What determines whether a signal molecule binds on the surface or enters the cell?

Accepted Answer

all of these are correct

Answer

size

Answer

polarity

Answer

ability to cross the membrane

Question 16

When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.

Accepted Answer

Positive Feedback Response

Answer

Negative Feedback Loop

Question 17

As you get dehydrated, your blood becomes thicker and harder to pump. Your kidneys will respond by stopping urine production, sending the water from urine into your bloodstream to thin your blood back to normal level.

Accepted Answer

Negative Feedback Loop

Answer

Positive Feedback Response

Question 18

What does the process of phosphorylation do?

Accepted Answer

Addition of a phosphate group to a molecule.

Answer

Removal of a phosphate group to a molecule.

Answer

Addition of Non-polar elements to a phosphate group.

Answer

Removal of Hydrogen Ions from a protein.

Question 19

What is the name of the signaling molecule in cell communication?

Accepted Answer

ligand

Answer

receptor

Answer

operon

Answer

inhibitor

Question 20

Which is not a cell-surface transmembrane receptor?

Accepted Answer

intercellular receptor

Answer

tyrosine kinase

Answer

GPCR

Answer

Ion channel receptor

Question 21

Which kind of receptors are seen here?

Accepted Answer

Gated ion channels

Answer

G-coupled protein receptor

Answer

Receptor tyrosine kinase

Question 22

What type of transmembrane receptor is being shown?

Accepted Answer

G-protein receptor

Answer

Receptor tyrosine kinase

Answer

gated ion channel

Question 23

What type of transmembrane receptor is being shown?

Accepted Answer

Receptor tyrosine kinase

Answer

G-protein receptor

Answer

gated ion channel

Question 24

After a cellular response is achieved, how is it terminated?

Accepted Answer

the ligand and receptor separate

Answer

block the transduction pathway

Answer

the cell will keep responding

Answer

send out a different signal

Question 25

Phosphorylation cascades are often used for

Accepted Answer

amplification

Answer

reception

Answer

responses

Answer

termination

Question 26

What type of feedback loop is the diagram illustrating?

Accepted Answer

Positive Feedback Loop

Answer

Negative Feedback Loop

Question 27

What type of feedback loop is the diagram illustrating?

Accepted Answer

Negative Feedback Loop

Answer

Positive Feedback Loop

Question 28

What does the diagram represent?

Accepted Answer

Specificity in Cell Response

Answer

Amplification

Answer

Apoptosis

Answer

Intracellular Receptors

Question 29

What is being depicted in the image?

Accepted Answer

Amplification of the signal molecule

Answer

Phosphatase removing phosphate groups from proteins

Answer

Kinase groups adding dimer groups to other enzymes

Answer

Diffusion of molecules within the cell due to the signaling molecule

Question 30

Which type of reception usually changes the production of DNA?

Accepted Answer

Intracellular Receptors

Answer

Ligand Gated Channels

Answer

Receptor Tyrosine Kinases

Answer

G-Coupled Proteins