HUMAN NUTRITION

NUTRITION

LIPIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
As temperature increases
A
Permeability increases.
B
Permeability decreases.
C
Remains the same.
D
All of the above.
Explanation: 

Detailed explanation-1: -An increase in the temperature increases membrane permeability. At a freezing 0 degrees temperature, the phospholipids in the membrane are tightly packed and become rigid, and this decreases the permeability.

Detailed explanation-2: -The molecules within the membrane are constantly moving and their movement is greatly affected by temperature. Heating the membrane can cause gaps to form between the phospholipid molecules and the membrane will become more permeable. The protein in the membrane can be denatured by heat.

Detailed explanation-3: -If capillary permeability is increased, as in inflammation, proteins and large molecules are lost into the interstitial fluid. This decreases the oncotic pressure gradient and so the hydrostatic pressure in the capillaries forces out more water, increasing the production of the tissue fluid.

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