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Describe the structure of DNA and its importance.

DNA stands for deoxyribose nucleic acid, and essentially carries the genetic instructions for functioning, development, and reproduction. It is stored in the nucleus, within chromosomes which are thread-like...
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Answered by Keshana K. • Biology tutor
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What was the process of the Meelson and Stahl experiment in proving the process of DNA replication?

The double helix structure of DNA was already proven by X-Ray diffraction, but the process of replication was still unknown There were 3 possible mechanisms: conservative, semi-conservative and dispersive PR...
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Answered by Aran J. • Biology tutor
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Explain how atherosclerosis develops and how it leads to coronary heart disease (8)

-Atherosclerosis: hardening of blood vessels (specifically those that withstand high blood pressure, ie arteries.) Blood vessels are composed of three layers: the tunica intima, tunica media and tunica adven...
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Answered by Iliana M. • Biology tutor
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In photosynthesis, what are the products of the Light Dependent reaction, and the Light Independent reaction (Calvin Cycle)?

Light dependent: H 2 0 is split to form: 1/2 O 2 , ATP and NADPH Light Indepedent/Calvin Cycle: CO 2 is used, in the presence of RuBP and Rubisco enzyme to make G3P , which is needed to make sugars, i.e. Glu...
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Answered by Fernando C. • Biology tutor
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Explain the control of blood glucose levels in humans (8)

Blood-glucose levels are maintained within narrow limits so that there are sufficient amounts of glucose in the blood (for respiring cells) but also not too high levels that will disturb the osmotic balance....
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Answered by Iliana M. • Biology tutor
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