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The nervous system is made up of two parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is made up of the brain and the spinal cord. The PNS is made up of sensory and...

High cholesterol diets lead to high cholesterol levels in the blood. Low density lipoproteins, known as LDLs or BAD-cholesterol, build up in the artery walls. They form solid plaques which narrow the arte...

The nucleus contains genetic material which controls the activities of a cell

A vaccine contains a dead or inactive (an therefore harmless) form of a pathogen. By injecting this into the body, an immune response is triggered and white blood cells produce antibodies specific to the ...

So when we give an antibiotic (a drug that kills bacteria) it will kill all of the bacteria that are sensitive to it, if it's taken correctly. A few bacteria may have an adaptation allowing them to resist...