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Give the key characteristic features of a prokaryotic cell.

Prokaryotic cells are usually 1-10 micrometers in size. Prokaryotic cells have a cell wall, which is usually complexed with a peptidoglycan layer. Prokayotic cells do not have a nucleus. Prokayotic cells do ...
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Answered by Branislav V. • Biology tutor
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As one of the body's homeostatic mechanisms, blood glucose levels are controlled for by the hormone insulin. Explain how the regulation in blood glucose differs in a healthy individual and in somebody with type 1 Diabetes?

After the ingestion of a meal containing carbohydrate, glucose is released into the blood stream from the gut. An increase in blood glucose stimulates the secretion of the hormone, Insulin from the pancreas ...
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Answered by Hannah S. • Biology tutor
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Describe how the structure of ATP is similar to and differs from the structure of a DNA nucleotide.

First of all, one can tell a lot about the structure of these molecules by looking at their full names - Adenosine triphosphate and deoxyribose nucleic acid. There are many structural similarities between AT...
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Answered by Alfie B. • Biology tutor
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Where do the 4 stages involved in Respiration?

There are 3 main stages of aerobic respiration: 1. Glycolysis that takes place in the cytoplasm 2. Link reaction takes place in mitochonrial matrix 3. The citric acid (Krebs) cycle that takes place in the mi...
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Answered by Megan N. • Biology tutor
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what are enzymes?

Enzymes are biological catalysts . They speed up chemical reactions in all living things, and allow them to occur more easily. They occur in plant cells and animal cells. Enzymes are chemical molecules, made...
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Answered by Alex B. • Biology tutor
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