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Phospholipids and proteins regulate the movement of substances through the membrane, thereby allowing the membrane to be selectively permeable. This is important since it allows the c...

An organism that causes disease e.g. bacteria, virus

An increased heart rate will cause an increase in blood flow around the body (increased cardiac output). This means that there will be more oxygen and more glucose being supplied to the muscles. Since oxy...

Imagine a cell like a rectangle, of which one side has finger-like projections (this side faces the intestinal lumen) called the villi, and the other side is flat - the base membrane of that cell that is....

pancreas detects low blood glucose, so produces glucagon. glycogen is converted to glucose