Table of Contents
What is the arrangement of cells in onion?
The onion cell is a plant cell that can be obtained by peeling off an onion. Onion cellsexhibit a brick-like shape under the microscope. It has a cell wall, cell membrane, cytoplasm, nucleus, and a large vacuole. At the periphery of the cytoplasm, the nucleus is present.
How are the cells arranged in an onion peel?
The cells that form the peel are rectangular in shape, compactly arranged and without any intercellular spaces. Each cell has a distinct cell wall, a prominent nucleus and a vacuole.
How do cells of the onion appear under the microscope?
The main onion cell structures are quite easy to observe under medium magnification levels when using a light microscope. The cells look elongated, similar in appearance- color, size, and shape- have thick cell walls, and a nucleus that is large and circular in shape.
How is an onion made of cells?
Requirements, Preparation and Observation. The bulb of an onion is formed from modified leaves. Unlike animal cells (such as cheek cells) the cell wall of an onion and other plants are made up of cellulose, which protects the cell and maintains its shape. …
What is the layer responsible for the organized arrangement of cells?
the cell wall
A major role of the cell wall is to form a framework for the cell to prevent over expansion. Cellulose fibers, structural proteins, and other polysaccharides help to maintain the shape and form of the cell. Additional functions of the cell wall include: Support: The cell wall provides mechanical strength and support.
Why are onion cells rectangular?
The shape of an onion cell is generally rectangle or square because it is easier to build a “brick wall” (cell wall) out of rectangular bricks. Any structure that minimises interstitial space will hence allow more “life”, thus possibly making it stronger.
What structures can we identify in the onion cell?
An onion is a multicellular (consisting of many cells) plant organism. As in all plant cells, the cell of an onion peel consists of a cell wall, cell membrane, cytoplasm, nucleus and a large vacuole. The nucleus is present at the periphery of the cytoplasm. The vacuole is prominent and present at the centre of the cell.
What structure were able to see in onion cell?
Onion cells are arranged in a more regular pattern. What structures were you able to see in both types of cells? Both the nucleus and cell membrane were visible in both types of cells. The cell wall was ONLY visible in the onion cell.
What cell structures are visible in an onion?
The main onion cell structures are quite easy to observe under medium magnification levels when using a light microscope. The cells look elongated, similar in appearance- color, size, and shape- have thick cell walls , and a nucleus that is large and circular in shape . Onions are composed of several layers separated by thin membranes.
What organelles are present in an onion cell?
To answer your question, onion cells (you usually use epithelial cells for this experiment) are ‘normal’ cells with all of the ‘normal’ organelles: nucleus, cytoplasm, cell wall and membrane, mitochondria, ribosomes, rough and smooth endoplasmic reticulum, centrioles, Golgi body and vacuoles .