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KonstantinChe [14]
3 years ago
14

Explain why hydrophobic molecules can easily cross the plasma membrane, while hydrophilic molecules cannot.

Biology
1 answer:
ziro4ka [17]3 years ago
4 0
<h2>Explanation:</h2>

Membranes are semipermeable lipid bilayers. Permeability refers to the ease with which molecules cross biological membranes. Because of the chemical and structural nature of the phospholipid bilayer (hydrophobic core), only lipid-soluble molecules are able to freely pass through the lipid bilayer because it attracts these non polar molecules.

Water soluble or hydrophilic molecules cannot pass through these lipid membranes because hydrophobic bilayer repels hydrophilic molecules. Ions and large polar molecules cannot pass through the lipid bilayer.  

But more specifically, whether a molecule can pass through the membrane depends on its size and its electrical nature.


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The part of the eye that prevent light from reflecting internally and is heavily vascularized to deliver blood to the retina: choroid.

<h3>What is choroid?</h3>

The choroid is highly vascularized to provide blood to the retina and contains dark pigmentation to stop light from reflecting inside. Anteriorly, the choroid, ciliary body, and iris are all joined.. The ciliary body muscles regulate the lens's thickness. The iris acts as a diaphragm, changing the pupil's aperture at its center. This regulates how much light is allowed to enter the retina. In strong light, the iris' muscle fibers constrict the pupil to accommodate close vision; in low light, they enlarge it to accommodate far vision. Each individual's iris is a different color.

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brainly.com/question/799280

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1 year ago
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Explanation:

it produce fat as it is base and starch is acidic

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