Biology, 20.02.2020 03:37 jarednash015

What does not describe a biological membrane?

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Answer from: Taiyou

A biological membrane is not a static lipid bilayer.

Explanation:

A biological membrane also called the plasma membrane is not just a lipid bilayer.It is specifically called a Phospholipid Bilayer.It is composed of :A glycerol moiety which is attached by three ester bonds with,One Phosphate moiety.Two chains made up of Fatty acids (both saturated and unsaturated).The fatty acid chains being hydrophobic in nature face towards the interior of the bilayer and the phosphate groups being hydrophilic in nature face towards the outer side.The phospholipid bilayer is also interspersed by integral membrane proteins, carrier proteins and membrane associated proteins and also cholesterol molecules.The bilayer is not static, it is fluid in nature. This means that the lipid molecules and proteins can laterally displace and move from their place in the membrane.The fluidity of the membrane is accounted by the unsaturated fatty acids that have bends or kinks in the chain ( saturated fatty acid has straight linear chains). These bends promote movement in the chains, thereby making the membrane fluid in nature.

Answer from: Quest

Nerves are problay the number 1 thing in the body

Answer from: Quest

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.

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