Question

Rohit observed two slides under light microscope and identified them as onion peel and cheek cells . How did he reached to his conclusion ?

Answer 1

An onion cell is a plant cell, and a cheek cell an animal cell. The main differences between plant and animal cells are that plant cells have: Cellulose cell wall Large vacuole Chloroplasts (if the plant is green) Cellulose cell wall Large vacuole Chloroplasts (if the plant is green) from the inner lining of the mouth. The lining is a mucous membrane similar to those found all throughout our digestive tract. When you view a "cheek cell" scraping through a microscope on high power, you will see many cells that have been overlapped or rolled up. When you find one or a group of cells, each cell will have an irregular edge and a distinct nucleus in its center. The cells have will have an irregular edge and a distinct nucleus in its center. The cells have described as looking like a fried egg, sunny side up (but transparent). Onion skin cells seen through the microscope are also transparent. However, they are generally rectangular in shape, with a distinct cell wall. Like all cells, there is also a plasma membrane surrounding the cell contents, but it clings closely to the cell wall and is hard to see with a light microscope. Inside the onion cell one can see a nucleus and tiny grainy objects in the cytoplasm.