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These 3 terms all describe the 3 possible concentrations of a solution in respect to the water potential surrounding a cell.Isotonic solution (Iso=same and tonic=strength...
A plasma membrane is composed mainly of an unordered phospholipid bilayer (double layer) embedded with membrane proteins which forms a thin flexible sheet. This gives the...
Cigarette smoke contains a number of harmful chemicals such as Tar, Carbon monoxide and Nicotine.
Tar settles on the lining of the airway and alveoli, increasing the diffusion distance for the gase...
What is an Enzyme?Enzymes have an essential role in the reactions in the body from respiration to digestion. Enzymes are globular proteins with a specific tertiary shape.KDAnswered by Katie D. • Biology tutor21799 Views
Excretion is the removal of toxic materials, waste products of metabolism and excess substances from organisms.
Egestion is the passing out of undigested food as faeces, through the anus.
Th...
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