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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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Why does limestone react to acid rain, but sandstone does not?
motikmotik

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Sandstone does not react with Hydrochloric acid. The acid soaks into the rock because the rock is porous, filled with tiny holes. It is made up of tiny grains of sand cemented together by intense pressure.

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All of the following are examples of organic matter in soil except
kiruha [24]

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water

Explanation:

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A plant has the genotype AAbbCcDDEeff, where each letter represents a different gene. This plant is crossed with another whose g
scoundrel [369]

Answer:

The fraction of the offspring that will show the phenotype produced by the recessive c allele is 1024/4096 = 0.25 A-BbccDdE-Ff = 25%

Explanation:

You can calculate the fraction of the offspring that will show the phenotype produced by the recessive c allele by making the punnet square for each gene and then multipling the phenotypic proportions, like this:

Cross) AAbbCcDDEeff     x      AaBBCcddEEFF

Cross For each gene by separately:

  • Parental )        AA    x    Aa

       Gametes)  A    A         A    a

        F1)             2/4 AA  

                          2/4 Aa

  • Parental )        bb    x    BB

         Gametes)  b    b         B   b

          F1)                   4/4 Bb

  • Parental )        Cc    x    Cc

        Gametes)  C    c         C    c

         F1)             1/4 CC

                           2/4 Cc

                            1/4 cc

  • Parental )        DD    x    dd

       Gametes)  D    D          d    d

        F1)             4/4 Dd

  • Parental )        Ee    x    EE

        Gametes)     E     e      E     E

         F1)             2/4 Ee

                           2/4 EE

  • Parental )        ff    x    FF

         Gametes)     f     f      F     F

          F1)             4/4 Ff

So, fraction of the offspring that will show the phenotype produced by the recessive c allele is:

4/4 A-  x  4/4 Bb   x   1/4 cc   x   4/4 Dd   x  4/4 E-   x   4/4 Ff =  

1024/4096 = 0.25 A-BbccDdE-Ff =25%  

6 0
3 years ago
Read 2 more answers
Which of these practices does the most to keep the water table from dropping near a farm?
taurus [48]

Hey there!

Option D would be correct.

Hope this helps, tell me if I am wrong!

4 0
3 years ago
Read 2 more answers
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