Edexcel A level Biology Frequently Most
Tested Questions and Verified Accurate
Answers
Molecular phylogeny
✓ It compares the structure of a particular molecule from different organisms to discover
their degree of evolutionary relation.
Somatic cell
✓ A cell in an organism which isn't a gamete.
DNA
✓ Deoxyribose nucleic acid. Carries the genetic information for cells and some viruses.
mRNA
✓ Messenger ribose nucleic acid (single stranded). The product of transcription.
Speciation
✓ The process through which a species is created
Sympatric
✓ Due to reproductive isolation.
Allopatric
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✓ Due to geographical isolation
Niche
✓ The role an an organism in an ecosystem.
Habitat
✓ The natural environment in which a species lives.
Biodiversity
✓ The diversity of plant and animal life in a particular habitat
Ecosystem
✓ Organisms and their interactions with biotic and abiotic factors.
Carpentered world hypothesis
✓ People who live in a world with many straight lines and right angles tend to interpret
obtuse and acute angles as right angles.
Muller-Lyer Illusion
✓ An illusion where a man could be pointing at two different objects, but depth cues let us
know it is the object in the foreground he is pointing to.
Inhibitory synapse
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