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The route of respiration for aquatic animals is via the gills. Oxygen absorption takes place as water, drawn in through the mouth is pushed out through the gill slits so flow is unidirectional (unlike mam...

Domain-> Kingdom-> Phylum-> Class-> Order-> Family-> Genus-> Species

Bacteria- No membrane-bound organelles

Archaea- A cell wall lacking peptidoglycans

Eukarya- C...

Firstly, it is important to understand what a synaptic junction is and its purpose. A synaptic junction is a type of gap junction between the pre-synaptic and post-synaptic membran...

For organisms to grow and repair cells are constantly replicating, and therefore the DNA within cells is also constantly replicating. The process begins with the enzyme DNA helicase break...

1. Sensory neurone detects a stimuli via sensory receptors e.g. a hot pan

2. This sends an impulse up the sensory neuron to the brain or spinal column (together known as the central ...