How do oysters make pearls?
Pearls are formed in the body of a sea oyster as a response to an irritant that enters its shell. The irritant can be a…
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Category
Biology
Mutation
Mutation is a change in the DNA sequence of an organism’s genetic material. DNA, or deoxyribonucleic acid, is the molecule that carries the genetic instructions…
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Chromosome
A chromosome is a structure found in cells that is made up of a long strand of DNA, which is the genetic material that contains…
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Defences Against Diseases
The body has three main lines of defence against disease. These involve mechanical barriers, chemical barriers and cells. Mechanical barriers Although many bacteria live on…
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How do plants know when to flower?
Phytochrome, a blue-green pigment, is part of a switching mechanism for phototropic responses to light of red and far-red wavelengths. Its active form, Pfr might…
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Sir Alexander Fleming
(August 6 , 1881 – March 11, 1955) Early life and Education Sir Alexander Fleming was a Scottish physician, microbiologist, and pharmacologist, who was born…
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Q & A on Components of Cytoplasm
Which organelle divides and compartmentalizes the cell? The endomembrane system, which fills the cell and divides it into compartments, and is visible only through electron microscopy.…
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Phylum Hemichordata
Hemichordates are vermiform, solitary or colonial enterocoelous coelomate animals having intra-epidermal nervous system and a pre-oral gut with or without gillslits and without typical nephridia.…
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Types of Classification System
Biological classification is the scientific procedure of arranging organisms into groups on the basis of their similarities and dissimilarities and placing the groups in a hierarchy of categories like species, genus, family, etc
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Type of Classification System Quiz
Welcome to our “Type of Classification System Quiz!” Are you ready to explore the diverse methods used to categorize everything from living organisms to data…
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