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active transport and diffusion. Examples of each would be that glucose is actively transported against its concentration gradient from the gut into the intestinal epithelial cells. Glucose is transported ...
An enzyme is a protein and protein synthesis occurs in the ribosomes of cells, particularly cells that have the role of producing enzymes for the digestion of material in the small intestines. So one adap...
A DNA molecule is double stranded and arranged in a helical structure. The two strands are made up of a sugar phosphate 'backbone' where the sugar is attached to a base and a phosphate group, the sugar is...
In the Loop of Henle. Here a salt gradient is established as the loop of Henle is permeable to both water and salts such as sodium.
Neither diffusion or osmosis require an input of energy and result from molecules moving from an area of high concentration to low concentration. This is movement down the concentration gradient.All gasse...
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