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Cells & More
Wednesday, September 24, 2014
Cells - The Real Thing
A cell is the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic. (Resource: www.dictionary.com)
Every human being has about 100,000,000,000,000 cells in their body. There are actually more than one type of cell. There are blood cells (red,white,etc.), skin cells, and a cell for every part of your body. There are two types of cells. The plant cell or an animal cell. The plant cell is surrounded by a thick and rigid membrane; the animal cell can take forms, it is without a cell wall. Plants, as you probably know, need to make thier own food. That's why plants use chloroplast to transfer sunlight in to energy. Every living organism on earth has a cell. A cell has many jobs, including digesting, traveling, and reproducing. When old cells die, new one should form.
Cell Wall - Plant Cells
The cell wall is a thick and rigid membrane that protects the cell and cell membrane of the plant cell. The substance groups with other materials to create a thick structure.
Chloroplasts - Plant Cell
Chloroplasts, only located in a plant cell, takes sunlight from plants and produce energy for the plant cell with it. This is called photosynthesis. You can easily relate to the real world, because solar power, and solar panels, resemble chloroplast - taking sunlight and turning in to energy.
Vacuole
The vacuole is a bubble-shaped organelle that stores water, digesting material, and wastes. A plant cell has one big vacuole, an animal cell has multiple.
Endoplasmic Reticulum
Also called 'ER' for short, the Endoplasmic Reticulum is a vast series of interconnected, convulted tubes that carry materials through and within the cell.
Ribosomes
The ribosomes are the site of protein synthesis (protein production/delivery) for the cell. The ribosome produces proteins.
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