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Bacteria (prokaryotes) 1-5 micrometers, contain RNA and DNA, can synthesise and metabolise protein, generally free livingMajority are harmless, but a certain small list can cause infectious diseasesOne of...
The ancestral species is split into two populations by a geographic barrier, which prevents gene flow. Mutations arise which causes genetic variation between the populations. There are different environme...
The solute potential of the blood plasma would be less negative or higher. Higher solute potential = higher water potential.
Water moves via osmosis from areas of high water potential to low water...
A mutation in the DNA sequence may lead to a different amino acid sequence may lead to a different amino acid being produced in the primary protein structure of the enzyme during translation. This may cau...
The increased pressure caused by the stimulus opens pressure gated sodium ion channels allowing Na+ ions to diffuse (down a concentration gradient) into the axon. This sudden influx of Na+ ions causes a l...
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