Why Does Rhodopsin Have an Unusually Stable Structure for a GPCR

question 6

Multiple Choice

Why does rhodopsin have an unusually stable structure for a GPCR?

• A)Its ligand is permanently bound to the protein.
• B)A retinal group is permanently bound to the protein.
• C)The protein molecule can only exist in a single conformation in the absence of a stimulus.
• D)The protein molecule can only exist in a single conformation in the dark.
• E)All of these are correct.

Explain the process of osmosis and its importance in cellular function.

Understand the purpose and method of polymerase chain reaction (PCR) in replicating DNA sequences.

Identify the role of ribosomes in protein synthesis within the cell.

Explain the concept of genetic constancy across different levels of biological organization.

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Definitions:

Endorphins

Natural, pain-relieving chemicals produced by the body that also contribute to feelings of pleasure and well-being.

Dopamine

A neurotransmitter involved in the regulation of movement, attention, learning, mood, and motivation.

Monoamines

A group of neurotransmitters, including dopamine, norepinephrine, and serotonin, that play key roles in regulating mood, arousal, and sleep.

Acetylcholine

A neurotransmitter in both the peripheral and central nervous systems that plays a crucial role in muscle contraction and cognitive functions.