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What are the stages of mitosis?

Mitosis consists of four basic phases. 1. Prophase 2. Metaphase 3. Anaphase 4. Telophase It is a common mistake to believe that interphase is part of mitosis. In fact, interphase is just a preparation stage ...
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Answered by Josh J. • Biology tutor
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What bonds are present in each type of structure of a protein?

PRIMARY PROTEIN STRUCTURE This is the sequence of amino acids in a polypeptide chain. These are bonded together by strong covalent bonds . SECONDARY PROTEIN STRUCTURE The secondary structure is the shape tha...
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Answered by Josh J. • Biology tutor
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Describe the role of lipids.

Lipids are a great energy reserve in both plants and animals . This is due to the greater number of carbon-hydrogen bonds present in comparison to carbohydrates. It also acts as an insulator against heat los...
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Answered by Josh J. • Biology tutor
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What is an allergy?

Allergy is the result of the immune system overreacting to harmless stimuli in the environment. Examples of stimuli or 'allergens' include pollen, dust, eggs and milk. The body recognises these harmless alle...
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Answered by Saadiyah K. • Biology tutor
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What is peristalsis?

Peristalsis is the mechanism by which gut muscles contract. There are two main types of muscle in the gut: -longitudinal -circular Together, these muscles contract to create waves of movement. This allows fo...
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Answered by Saadiyah K. • Biology tutor
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