The statements 'histamine binds extracellularly to the H1 receptor', 'when histamine binds to the H1 receptor, the receptor undergoes a conformation change and binds the inactive G protein', 'once the G protein is active, it binds to the enzyme phospholipase C, activating it', and 'histamine is likely hydrophilic' are TRUE.
Histamine is a molecule released during inflammatory and allergic responses.
This molecule (histamine) binds to the G-protein coupled histamine (H1) receptor. This binding triggers a conformational change in the three-dimensional (3D) shape of the G-protein coupled H1 receptor.
Subsequently, the heterodimeric G protein is activated by GTP binding. The G-protein–GTP complex then dissociates from the G-protein coupled H1 receptor and interacts with phospholipase C, thereby activating a transduction signaling pathway.
Finally, the G protein accelerates the hydrolysis of GTP to GDP and thus terminates the transduced signal.
In conclusion, the statements 'histamine binds extracellularly to the H1 receptor', 'when histamine binds to the H1 receptor, the receptor undergoes a conformation change and binds the inactive G protein', 'once the G protein is active, it binds to the enzyme phospholipase C, activating it', and 'histamine is likely hydrophilic' are TRUE.
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Answer:
-Histamine binds extracellularly to the H1 receptor.
-When histamine binds to the H1 receptor. the receptor undergoes a conformation change and binds the inactive G protein.
-Once the G protein is active, it binds to the enzyme phospholipase C, activating it.
-Histamine is likely hydrophilic.
When histamine encounters a target cell, it binds extracellularly to the H1 receptor, causing a change in the shape of the receptor. This change in shape allows the G protein to bind to the H1 receptor, causing a GTP molecule to displace a GDP molecule and activating the G protein. The active G protein dissociates from the H1 receptor and binds to the enzyme phospholipase C, activating it. The active phospholipase C triggers a cellular response. The G protein then functions as a GTPase and hydrolyzes the GTP to GDP. The G protein dissociates from the enzyme and is inactive again and ready for reuse.
Explanation:
B) active transport using ATP and carrier proteins
C) passive transport by osmosis through the proteins
D) active transport using a process called phagocytosis
The correct option is passive transport by diffusion through proteins.
A type of cellular transport known as passive transport involves the movement of molecules and ions along concentration gradients. It indicates that a drug has a propensity to migrate from a region of higher concentration to a region of lower concentration.
Contrary to active transport, another type of cellular transport, which fundamentally requires ATP to move substances against their concentration gradient, the process does not require metabolic energy (e.g. ATP) because the chemicals are moved downhill or along their concentration gradient.
The four main methods of passive transport are osmosis, filtration, simple diffusion, and assisted diffusion.
Therefore, The correct option is passive transport by diffusion through proteins.
To learn more about active transport, refer to the link:
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Answer:
Bull and cow not have udders
Explanation:
Thats
No, there is no breed of male cows that have udders. Udders are mammary glands found in female cows, and their purpose is to produce milk. The udders of female cows are an important reproductive feature that allows them to nourish their young with milk after giving birth.
No, there is no breed of male cows that have udders.
Udders are mammary glands found in female cows, and their purpose is to produce milk. Male cows, also known as bulls, do not have udders because they do not produce milk.
The udders of female cows are an important reproductive feature that allows them to nourish their young with milk after giving birth.
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Triglycerides
Glucose
Enzymes
RNA
b. involuntary
c. emergency
d. repeated
Answer:
A higher frequency causes a shorter wavelength and higher energy.
A shorter frequency causes a greater wavelength and low energy.
Explanation:
Frequency is the number of waves that move at a period of time. It is measured by counting the number of crest point.
Wavelength is the distance between waves. A wave with higher frequency have crest that a very close and therefore the distance between them or wavelength is short compare to a wave with low frequency that the distance are farther apart and they have long wavelength. Therefore to generate high frequency of wave , more energy is required to do this .
Answer:TRIBUTARY-one of many channels that connect to form a river
RILL-a small groove in soil created by runnoff STREAM-a series of connected channels that fills with water GULLY-a channel of created by runoff
Explanation:
I got it correct