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masha68 [24]
3 years ago
7

The hyperalgesia that is common in phantom limb pain could potentially be blocked if a new drug was developed that could prevent

(without triggering any side-effects) the ______.
a) binding of enkephalins to NMDA receptors
b) diffusion of calcium ions through NMDA receptors
c) release of enkephalins diffusion of enkephalins
d) across synaptic clefts
Biology
1 answer:
gregori [183]3 years ago
8 0

Answer: The answer is B- Diffusion of calcium ions through NMDA receptors.

Explanation:

Phantom limb pain (PLP) is a painful sensation experienced after the loss or amputation of a limb. The limb is no longer there but the individual can still feel real and severe pains in the limb. This occurs soon after surgery.

NMDA is a receptor for Glutamate which is an excitatory neurotransmitter. The activation of NMDA receptors are associated with hyperalgesia which is an abnormally heightened sensitivity to pain.

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ehidna [41]
<h2>The correct answer is explained below:</h2>

Explanation:

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  • However, a cell can maintain proper homeostsis and undergo metabolism only when it is able to exchange different hydrophilic and polar organic and inorganic chemical components present inside the cell with those present outside the cell.
  • This necessitates the development of a "path" that could connect the cell interior to the cell exterior.
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  • These integral membrane proteins are of two types: Channel proteins and Carrier proteins.
  • The Channel proteins:
  1. Form a direct and continuous opening across the plasma membrane. They can either remain always open or can be gated, that is, they open only on associating with specific signalling molecules.
  2. They transport solutes from a region of high electrical charge or concentration to a region of low electrical charge or concentration, that is, down the electrochemical or concentration gradient.
  3. They usually allow the easy and quick transport of water molecules and small ions across the membrane.
  • The Carrier proteins:
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  2. When they open on one side of the membrane they are closed on the other side. They cannot remain, simultaneously, open on both sides of the membrane.
  3. They are required mainly for the translocation of small polar organic molecules across the plasma membrane down the electrochemical or concentration gradient.
  • For channels only:
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iVinArrow [24]

Answer:

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Explanation:

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Biotechnology covers many disciplines such as genetic engineering, biochemistry, molecular biology, medicine, agriculture etc. In medicine, biotechnology has been applied in the development of medicines and therapies, etc. In agriculture, biotechnology is applied in the development of genetically modified plants, biofuels, biological treatment as well as to solve other agriculture-related issues. In the industries, through genetic engineering, simple cells and proteins has been engineered to produce useful chemicals such as drugs, hormones, etc.

Since George's studies involves cell culturing and genetics of plants in order to develop technology that will improve plant production and solve other agriculture-related problems, he is studying Biotechnology.

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Answer:

A

Explanation:

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