Both onion and cheek cells have cell membranes, cytoplasm and a nucleus. Onion cells have a cell wall and are rectangular, while cheek cells lack a cell wall and appear rounded or irregular. Class 8 NCERT Science Curiosity Chapter 2 The ...
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Like plants, the body of an animal is also made of cells. These cells form tissues organs and systems that carry out various functions like movement, digestion, breathing and reproduction. Class 8 NCERT Science Curiosity Chapter 2 The Invisible Living World: ...
A cell is the basic structural and functional unit of all living organisms. It carries out essential life processes such as respiration, growth and reproduction. All plants and animals are made of cells. Class 8 Science Grade 8 Chapter 2 The ...
Antonie van Leeuwenhoek is known as the Father of Microbiology. He was the first to observe and describe microorganisms like bacteria using a microscope, opening the hidden world of microbes to scientific study. Class 8 Science Grade 8 Chapter 2 The ...
The invention of the microscope helped humans see microorganisms for the first time. It made the invisible world of bacteria, cells and tiny life forms visible, transforming science and medicine forever. Class 8 Science Grade 8 Chapter 2 The Invisible Living ...