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Can be used in adaptive or innate immune response.Can be used to link the two responses, i.e. forming APC which forms MHC complex 2 (endogenous pathway) and presents to complementary CD4+T helper cells. L...

A gene is a length of DNA that codes for a particular trait. ( Think of- jeans - they are long items (length) of clothing, what they're made out of determines what they are. This is a key concept of g...

So Bacteria and other pathogens are too large to enter a cell via diffusion across the cells membrane so instead white blood cells will engulf them. This is essentially what phagocytosis is and cells that...

A motor neuron stimulates the sarcoplasmic reticulum, causing it to release Calcium ions. The calcium ions binds to the toponin that is blocking the myosin binding site on the acting filament, the binding...

Alleles are different versions of the same gene, which give different characteristics (or phenotypes) when expressed. Each gene has a pair of two alleles, and these pairs can be h...