Phospholipids. Phospholipids, arranged in a bilayer, make up the basic fabric of the plasma membrane. They are well-suited for this role because they are amphipathic, meaning that they have both hydrophilic and hydrophobic regions. Chemical structure of a phospholipid, showing the hydrophilic head and hydrophobic tails ..
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The optic nerve carries impulses to the thalamus and ultimately to the visual cortex of occipital lobes.
The optic nerve is a paired nerve, and part of the central nervous system that transfer visual messages from the retina to the vision areas of the brain through electrical impulses. The optic nerve is situated behind the eye and it is made up of retinal ganglion cell axons, glial cells and over one million nerve fibers.
Organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere
There are inner part of the stem and outer part of the stem; in a plant the inner part supports the movement of the water and nutrients. You stop the flow of the vital elements of plant growth when you snap the stem and this is the reason why the plant die due to starvation of the nutrients.