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What is osmosis?

Osmosis is the diffusion of water from a dilute solution to a concentrated solution across a partially permeable membrane. Terms: Diffusion (the net movement of particles from a high to a low concentration.)...
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Answered by Charlotte L. • Biology tutor
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Difference between prokaryote and eukaryote?

Prokaryotes do not have a membrane bound nucleus, eukaryotes do. Prokaryotes have plasmids. Prokaryotes have smalled ribosomes than eukaryotes. Eukaryotes have more organelles than prokaryotes. I.e. eukaryot...
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Answered by Laurence D. • Biology tutor
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Describe blood supply to the liver?

The liver is supplied by the hepatic artery bringing oxygenated blood to it. The liver is also supplied by the hepatic portal vein. This brings the absorbed nutrients from the small and large intestine to th...
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Answered by Laurence D. • Biology tutor
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What is a zymogen giving reference to an example?

A zymogen is the inactive form of an enzyme. For instance the enzyme pepsinogen is produced by chief cells in the gastric pits. Pepsinogen is a zymogen. Hydrochloric acid produced by the parietal cells of th...
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Answered by Laurence D. • Biology tutor
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What are the two main secondary structures of proteins?

Alpha helices and Beta pleated sheets.
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Answered by Umamah Y. • Biology tutor
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