THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Some cells emerge spontaneously
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Cells arise from pre-existing cells.
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All living organisms are composed of one or more cells.
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The cell is the basic unit of structure and organization in organisms.
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Detailed explanation-1: -He made use of a microscope containing improved lenses that could magnify objects almost 30ox. Under these microscopes, Leeuwenhoek found moving objects that he named “animalcules, ” which included protozoa and other unicellular organisms, like bacteria. He was also able to observe red blood cells and sperm cells.
Detailed explanation-2: -It was he who discovered bacteria, free-living and parasitic microscopic protists, sperm cells, blood cells, microscopic nematodes and rotifers, and much more. His researches, which were widely circulated, opened up an entire world of microscopic life to the awareness of scientists.
Detailed explanation-3: -Leeuwenhoek is universally acknowledged as the father of microbiology. He discovered both protists and bacteria [1]. More than being the first to see this unimagined world of ‘animalcules’, he was the first even to think of looking-certainly, the first with the power to see.
Detailed explanation-4: -Antonie van Leeuwenhoek used single-lens microscopes, which he made, to make the first observations of bacteria and protozoa.