A cell is the smallest basic part of a living thing and is fully alive. Most cells have a diameter of between 0.01mm and 0.1mm. The human body is made up of 50 million cells and a drop of blood contains over 1 million red blood cells. Different cells exist in various shapes and sizes but all cells consist of cell membrane, cytoplasm, vacuoles and nucleus containing chromosomes.
Animal cells don’t have cell walls and chloroplasts which makes them different from plant cells. As there is no presence of cell wall, animal cells can be of any sort of shape or size as they are surrounded by a plasma membrane.
Animal cells have centrioles which is absent in plant cells. When the cell experiences the process of mitosis and gets divided, centrioles are essential for DNA segregation. Vacuoles are present in both plant and animal cells, but in plants the vacuoles are large in size. There are a few types of animal cells like muscle cells, nerve cells, etc.
Science tuition class in Miracle Learning Centre is fun and enriching. You will learn about the different aspects of Science and how to learn study skills too. If you do not like or understand Science, you must definitely attend the Science tuition class at Miracle Learning Centre to arouse and reignite your interest. Let us learn about Cells in this Science tuition lesson.
A cell is the smallest basic part of a living thing and is fully alive. Most cells have a diameter of between 0.01mm and 0.1mm. The human body is made up of 50 million million cells and a drop of blood contains over 1 million red blood cells. Different cells exist in various shapes and sizes but all cells consist of cell membrane, cytoplasm, vacuoles and nucleus containing chromosomes.
The cell membrane is a thin layer around the cell and is semi-permeable allowing certain substances to move in and out of the cell. Cytoplasm is a jelly-like substance containing many chemicals and fills the cell. Many chemical reactions take place in it. The vacuoles on the other hand are spaces containing air, liquid or food particles and the nucleus controls all the chemical reactions of the cell and contains chromosomes.
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