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Biology
A Level

What is eutrophication?

Eutrophication is a result of nitrogen rich compounds leeching from farm land fertilizer/manure or other pollution methods to the river water ecosystem. The all of a sudden nitrogen rich environment in th...

FS
Answered by Festus S. Biology tutor
8203 Views

Explain the concepts of primary, secondary, tertiary and quaternary

A protein's function is determined by its structure. The structure of a protein can be described in four different ways, the most basic of which is the primary structure.

Proteins are made up of po...

ME
Answered by Matt E. Biology tutor
7222 Views

What is a disaccharide

A saccharide composed of two sugars. For example lactose is a disaccharide as it contains glucose ( a monosaccharide) and galactose (another monosaccharide) connected by a glycosidic bond

AP
Answered by Asya P. Biology tutor
4560 Views

What is the difference between a protein and a peptide?

A peptide is usually a short sequence of amino acids. Proteins are much larger structures, also comprised of amino acids, but having different levels of organisation such as forming secondary, tertiary an...

AP
Answered by Asya P. Biology tutor
7453 Views

What is the difference between hydrophillic and hydrophobic molecules?

Charged or polar molecules such as salts, sugars and amino acids dissolve readily in water and so are called hydrophilic ("water loving"). Uncharged or non-polar molecules such as lipids do not ...

AP
Answered by Asya P. Biology tutor
13946 Views

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