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Q 1/5
Score 0
There are several types of receptors that allow cells to communicate.
Which of the following is true regarding these cell receptors?
30
G protein-coupled receptors (GPCRs) are activated by autophosphorylation.
Ligand-gated ion receptors are receptors for a group of signaling molecules called growth factors.
Binding of a ligand to receptor tyrosine kinases causes a direct change in ion distribution across a membrane.
Intracellular receptors can be found in the cytoplasm or nucleus.
Q 2/5
Score 0
Ligands are signaling molecules that bind to receptors.
Which of the following statements is true of ligands?
30
All ligands are proteins.
Each ligand is only able to bind to one specific receptor.
Ligands can bind to cell-surface receptors, but they cannot enter the cell.
The binding of a ligand to a receptor molecule causes the receptor to change shape.
5 questions
Q.
There are several types of receptors that allow cells to communicate.
Which of the following is true regarding these cell receptors?
1
30 sec
Q.
Ligands are signaling molecules that bind to receptors.
Which of the following statements is true of ligands?
2
30 sec
Q.
Cells can communicate over short and long distances. An example of long distance signalling is...
3
30 sec
Q.
An error in the cell cycle causes S phase to end early. The most likely outcome of this event would be
4
30 sec
Q.
A cell releases chemical signals into its surrounding space in order to communicate with neighboring cells.
Which of the following must occur for the communication to be successful?