Answer:
The cuticle is the hair's protective layer, the cortex forms the pigment of the hair, the health of the cortex depends on the cuticle protecting it while the medulla is the innermost of the hair.
Explanation:
The cuticle is the hair outermost layer, the cortex is the middle structure for strength while medulla is the inner most.
Answer:
The cell membrane of a living plant cell selectively regulates the passage of substances into and out of the cell (option A).
Explanation:
The plasma membrane in a living plant cell is composed of a double lipid layer that gives it hydrophobic character and acts as a semi-permeable barrier. The partial permeability of the substances allows regulating the passage of substances from and to the interior of the cell.
At the level of the plasma membrane there are several mechanisms and transport to allow the entry of substances needed for the cell or the output of synthesized products or metabolic waste, thus regulating the passage of substance in a selective way.
Regarding the other options:
<em> B. Plasma membranes are composed of lipids, not just carbohydrates and proteins.
</em>
<em> C. Permeability is not for all substances, but is selective.
</em>
<em> D. Plasma membrane is a lipid bilayer, not a double layer of proteins.</em>
Answer:
The answer is D
Explanation:
Weathering is the breaking down of any natural material. Erosion is the movement of those broken down pieces from one place to another. Hope I helped you!
In meiosis, one haploid divides in.to two diploid cells
