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maxonik [38]
3 years ago
12

43. Which of the following statements concerning the action of G proteins on adenylate cyclase is true? I. G proteins always ser

ve to activate adenylate cyclase. II. G proteins always serve to inhibit adenylate cyclase. III. Some G proteins activate adenylate cyclase, while others inhibit it. IV. G proteins do not act on adenylate cyclase at all. 9
Chemistry
1 answer:
ExtremeBDS [4]3 years ago
8 0

Answer:

Some G proteins activate adenylate cyclase, while others inhibit it.

Explanation:

G proteins helps in the signal transduction process that transfer message in the body. GPCRs (G-protein-coupled receptors) are located on the surface membrane of the cell.

The G protein can activates the protein or might deactivate the proteins that helps in the adenylate cyclase. The particular phosphorylation and dephosphorylation process at different sites by the G proteins can result in activation and inactivation of adenylate cyclase.

Thus, the correct answer is option (C).

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An unknown compound does not dissolve in water, is a nonelectrolyte and has a low melting point. Would it be an ionic compound?
Leviafan [203]
No, it's not an ionic compound.
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3 years ago
**98 POINTS**
Andrei [34K]

OP already did it - CONGRATS!!

here are the steps 2 get the same ans:

(NH4)2 CO3 has 2x N, 8x H, 1x C and 3x O per molecule

so its molecular mass = 2x14 + 8x1 + 1x12 + 3x16

=28+8+12+48

=96g

of that 96g, 8x1=8g is due to Hydrogen

so by ratio n proportion, 1.00g will have 1x8/96 = 1/12g = 0.083g of H

3 0
3 years ago
There are several ways to model a compound. One type of model is shown.
yawa3891 [41]

Answer: The chemical formula for the formula given in the image is C_4H_9O_2.

Explanation: There are many ways in which a model can be represented:

  1. Molecular Formula
  2. Ball and Stick formula
  3. Expanded Formula
  4. Condensed Formula
  5. Skeletal Formula

This molecule is represented by the Expanded Structural Formula and by seeing in the image we can count the number of each element present.

Number of Carbon atoms present = 4

Number of Hydrogen atom present = 9

Number of Oxygen atom present = 2

Correct representation for this will be C_4H_9O_2.

8 0
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This is a Magnesium ion. There are 12 protons from the magnesium atom. There are 10 electrons because 12-2=10. There are 12 neutrons because 24-12=12

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