What is the Respiratory System? The respiratory system is the breathing mechanism of the human body.…
Category:
O Level Biology Revision Notes
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HUMANS The Heart The heart is a muscular organ of the size of a fist, located…
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ASEXUAL REPRODUCTION Asexual reproduction is a reproductive form that does not require gametes fusion or changes…
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What are Nutrients? The nutrition inputs containing raw goods and tissue repair energy, absorbing and assimilating…
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What are Organisms? Too small to be observed by the naked eye, but visible through a…
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What are Hormones? The hormones are generated by the endocrine gland system and are transport to…
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What is Homeostasis? Homeostasis is a persistent internal state. Homeostasis in biology is a state where…
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What Are Enzymes? Enzymes are the chemical catalysts in protein. Chemical reactions accelerate from catalysts. The…
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What are Drugs? A drug is any substance that affects the biology or personality of an…
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What is a Cell? A cell is a living thing’s littlest organ. A living being is…
