Onion cells, like most plant cells, have rigid cell walls which give them a regular shape. They are stacked tightly in columns and rows. Cheek cells have and irregularly shaped cell membrane. and are squished together in layers.
The cell membrane
The outer edge of a cell's cytoplasm is called the cell membrane or plasma membrane. It acts as a boundary that controls the movement of substances in and out of the cell. The cell membrane is composed of a phospholipid bilayer embedded with proteins that help maintain the cell's shape and allow for communication with other cells.
The plasma membrane of an Elodea cell is located just beneath the cell wall. It acts as a barrier, regulating the movement of substances in and out of the cell.
It is not always in the center of the cell. No more than if the endoplasmic reticulum is found there. In some cell types it is found toward the edge. It may be due to what is actually in the cell.
The nucleus is typically located near the edge of the cell to facilitate efficient communication between the nucleus and other cell structures. This positioning allows for quicker transport of genetic information to the cytoplasm for protein synthesis and other cellular processes. Additionally, it may offer protection to the nucleus by keeping it away from potential mechanical stress in the cell's interior.
Cheek cells are only found in animals, whereas onion cells are found in platns, particularly onion cells. Cheek cells, being animal cells, do not contain a cell wall as onion cells do becasue cell walls are found only in plant cells for structure and rigidness. Onion cells, unlike most plant cells, do not have chlorplasts becasue it does not need sunlight for photosynthesis as other plants do. Being grown underground, it receives nutrients directly from the soil, so chloraplasts are not evident. This is also why onions are never green, since chloroplasts contain chlorpohyll, a pigment which gives plants its green color. Basically, cheek cells are found in animals, and onion cells are found in plants.
cell surface membrane cell surface membrane
because Onion is a plant. Plant cells have a large vacuole in the centre of the cell which push the surrounding organelles and the nucleus towards the periphery. On the contrary, if you observe an animal cell you will find that the nucleus is situated right at the center because the vacuole is small comparatively and does not occupy a large space at the center.
*With a Microscope 400x Magnified*Nucleus-looks like a small dotCell Membrane-from outer layerCytoplasm-in the cell (filling cell's inside)
on the edge of the cell
It is on the edge of the cell. Thx for asking!:))
The cell membrane
Jaw line- The lower edge of the side of the face (below the cheek); defined by the jawbone.
the cell wall is located on the outer edge of the cell
around the edge
The outside layer of the animal cell is the cell membrane.
I think that the minced onions fry quicker around the outer circumference than in the middle because - in addition to the heat from the bottom of the pan the sides of the pan radiate additional heat as well. Therefore the onion around the edge fries quicker.