Chromosomes are a DNA molecule, that cannot be seen underneath a microscope. However, the DNA in chromosomes become pushed together during cell division, which then allows scientists to see its material under a microscope.
If a researcher electrically stimulates the reticular formation in an animal, the animal will immediately wake up and be alert. Its purpose is to have some control of sensory signals and thus has the ability to alert the body when it is tired or needs to be awake.
Hi!
The two types of endoplasmic reticulum are:
Rough Endoplasmic Reticulum RER
Smooth Endoplasmic Reticulum SER
The major difference between the two is the presence of ribosomes. The membrane of rough endoplasmic reticulum is bound by ribosomes, whereas the smooth endoplasmic reticulum is not bound by ribosomes.
Another difference lies in their function. RER is a storage house for proteins and is where the proteins are manufactured whereas SER is known for storing lipids and proteins both.
<h3>Hope this helps</h3>
Possibly to add more surface area......................
