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What activates a G protein
Related Topics
Wize University Biology Textbook > Cell Communication
Types of Cell Receptors [Internal Receptors, GPCRs, RTKs, Ion Channels]
7 Activities
What activates a G protein
When an enzyme catalyzes ATP into cAMP
When Ras turns on
When GDP is exchanged with GTP
When GDP is phosphorylated to GTP
I don't know
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More Types of Cell Receptors [Internal Receptors, GPCRs, RTKs, Ion Channels] Questions:
Order the G protein coupled receptor signalling mechanism in order of events:
Order the G protein coupled receptor signalling mechanism in order of events:
Order the G protein coupled receptor signalling mechanism in order of events:
Practice: Signal
Think about the GPCR pathway that was discussed in class. It went Signal molecule -> GPCR -> G protein -> adneylyl cyclase -> cAMP -> downstream effects. Which of the following was the secondary messenger?
what is true about cell membrane receptors?
Practice: G-Protein Coupled Receptors
Match the G-protein coupled receptor pathway component to the general signal transduction role.
What is one of the most common changes in the cell after receiving a ligand that activates the adenylyl cyclase pathway or the tyrosine kinase pathway?
Order the G protein coupled receptor signalling mechanism in order of events:
Practice: Signal
Think about the GPCR pathway that was discussed in class. It went Signal molecule -> GPCR -> G protein -> adneylyl cyclase -> cAMP -> downstream effects. Which of the following was the secondary messenger?
A certain ligand is known to be able to bind to multiple cell surface receptors. However, once it binds to any one of its receptors, it requires a lot of energy to dissociate the ligand from the receptor. What can you say about this ligand?
Practice: G-Protein Coupled Receptors
Match the G-protein coupled receptor pathway component to the general signal transduction role.
For the following odour signalling scenario, describe the signal relay pathway by answer the following questions:
1. What type of receptor is this?
2. What is the ligand?
Order the G protein coupled receptor signalling mechanism in order of events:
What type of molecules are membrane transporters (eg. pumps, channels, carriers)?
Which of the following would result in a permanently active response?
Consider the following scenario for this 4 part question:
Which of the following process(es) require phosphorylation as a chemical modification to activate a protein? Select all that apply.
Consider the following scenario for this 3 part question:
Receptor tyrosine kinases (RTKs) are abundant class of protein receptors in human cells. Which of the following would be true when comparing different RTKs from a single human sample?
They would contain only synonymous mutations
They would have the same amino acid sequence
There are multiple different types of G-protein coupled receptors (GPCRs) in the human body. Which of the following statements are correct regarding these proteins?
A high global alignment of amino acid sequences
Binding of the same ligand
Insulin is a hormone that acts as a signal to tell the cell to take up glucose from the blood. There is a protein associated with the cell membrane that sends a signal to the cell once it binds to insulin. What kind of membrane protein is this?