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In platyhelminthes digestion is both intracellular and extracellular whereas in annelida and chordata digestion is completely extracellular.
Plants have both xylem and phloem.The xylem is a tube which runs from the very ends of the roots to all other parts of the plant. Xylem transport water and minerals around ...
As an action potential arrives at A (the presynaptic terminal), pre-formed vesicles containing a chemical neurotransmitter fuse with the presynaptic membrane, releasing the chemical neurotransmitter into ...
Glycolysis is the first of four steps in cellular respiration, and involves the breakdown of one glucose molecule into two molecules of pyruvate. A 6C glucose molecule is first phosphorylated, using the p...
The ileum is lined with simple cuboidal epithelium. This means there is a short diffusion pathway from the lumen of the gut to the surrounding blood vessels. The lining epithelia also has villi and the ep...
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