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How does the DNA molecule affect the function and structure of an organism?

DNA is made up of a double helix with a sequence of nitrogenous bases attached; Adenine, Guanine, Cytosine and Thymine. These bases are used to code for messenger RNA, a molecule which allows for the replica...
MM
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What are the requirements for bacterial growth?

There are several factors contributing to bacterial growth, of which these can be very specific to different types of bacteria, but in general it is as follows. Nutrients is the most important factor, since ...
AP
Answered by Alex P. • Biology tutor
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Not all mutations lead to changed in amino acid sequence of polypeptides. Explain why.

Amino acids are the building bricks of life. Redundency occured with in their coding however. A single Amino acid may be coded for by more than one codon (a sequence of three nucleic acids) and therfore muta...
JS
Answered by Jonathan S. • Biology tutor
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What are the 2 types of enzyme inhibition and how do they work?

The 2 types are: Competitive and Non-competitive. Competitive inhibitors work by mimicking the shape of the substrate, they are specific to the shape of the active site of the enzyme and will take the place ...
SC
Answered by Soham C. • Biology tutor
3705 Views

Detail the pathway of oxygenated water in the ventilation of a fish. Name and briefly describe the mechanism by which gaseous exchange takes place.

Oxygen rich water enters the mouth due to buccal expansion > water is accelerated across the gill filaments due to simultaneous contraction of the buccal cavity and expansion of the opercula > gaseous ...
OF
Answered by Owen F. • Biology tutor
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