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Dvinal [7]
3 years ago
11

Which of the following are examples of ligand-gated ion channels? Choose all of the correct answers.

Biology
1 answer:
Juliette [100K]3 years ago
7 0

Answer: B) nicotinic Acetylcholine (ACh) receptor

C) muscarinic ACh receptor

Explanation: Ligand-gated ion channels are receptor channels that produce or respond to signals through the binding of some extracellular intracellular small molecule that causes the opening or closing of the channel. In Ligand-gated ion channels, the binding of the mushroom alkaloid muscarine (in the case of a muscarinic acetylcholine receptor) or the binding of nicotine ( in the case of nicotinic Ach receptors) to its receptor on the plasma membrane causes a conformational change in the receptor, causing the ion channel intrinsic to the receptor to open. The opening of the channel results in inward movement of positive charges such as sodium, calcium and potassium ions into the cell.

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Briefly explain what properties of the atoms in water (H2O) give water the ability to form hydrogen bonds. Your answer should in
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8 0
3 years ago
Red rose color is produced by either of two genes, R/r and I/i. The dominant alleles of both these genes produce red pigment, an
WARRIOR [948]

Answer:

3:1

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<u>  ║R ║ r</u>

<u>I ║RI║Ir</u>

<u>i ║Ri║ir</u>

The genotype ratio would be 3 because the dominant traits are present three times (RI, Ir, and Ri) and 1 for the recessive trait since it only appears once in the Punnet Square (ir). In conclusion, the phenotypic ratio form the roses are 3:1

5 0
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5 0
2 years ago
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