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Why are antibiotics not used to treat viral infections?

Antibiotics target a variety of sites on bacteria (disruption DNA or cell wall or protein synthesis). These are not found in viruses - viruses lack cell walls, ribosomes or cell membranes.Antibiotics would n...
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Answered by Karl L. Biology tutor
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Give one method of immobilising an enzyme. What are the benefits of using immobilised enzymes?

Methods:encapsulate in sodium alginate beadstrap in the pores of silica geladsorption onto glass or clay or resinwithin a polymer or microspheresby covalent bonding to a support material such as collagen Ben...
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Answered by Karl L. Biology tutor
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Explain the difference between diffusion and active transport with examples.

Diffusion is the passive process by which molecules move across a semi permeable membrane down their concentration gradient from an area of high concentration to low concentration. An example is gaseous exch...
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Answered by Sarah M. Biology tutor
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Describe the physiology of the pancreas

The Pancreas is a special organ found in the abdominal cavity. What is unusual about the pancreas is that it has both an endocrine and an exocrine function. An endocrine function is when the organ produces a...
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Answered by Scott W. Biology tutor
3397 Views

Explain how blood circulates through the heart?

Firstly we need to know the anatomy of the heart. The heart is made up of four chambers, the top two are called Atria and the bottom two are called ventricles, the heart is also split up into a left side and...
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Answered by Scott W. Biology tutor
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