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Compare and contrast the causes of Type 1 (insulin-dependent) and Type 2 (noninsulin-dependent) diabetes mellitus

Type 1 diabetes mellitus occurs when the body's immune system attacks beta cells within the Islets of Langerhans, in the pancreas. The immune system recognises pancreatic self-antigens as foreign and begins ...
JL
Answered by James L. • Biology tutor
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In the process of mitosis, which stages occur? Describe each stage.

Mitosis is a form of cell division that produces genetically identical cells and it includes 4 main stages. Before Mitosis can occur the cell undergoes Interphase, in which DNA and organelles are replicated ...
HC
Answered by Holly C. • Biology tutor
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How is an action potential (AP) transmitted across a synapse?

As an action potential (AP) arrives at the synaptic knob and depolarises the presynaptic membrane, voltage-gated Ca2+ channels open, allowing the entry of Ca2+ ions, This caues vesicles (membrane-bound organ...
YC
Answered by Young C. • Biology tutor
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1) Gluconeogenesis 2) Glycogenesis 3) Glycolysis. Which is stimulated by glucagon production? [A] 1, 2, 3 [B]1 [C] 2, 3 [D] 1,2

B is the answer. Glucagon stimulates an increase in blood sugar/ [glucose] Gluco means glucose is the product Glyco means glycogen (storage of glucose in animals) is the product Neo means substrate is from a...
JM
Answered by James M. • Biology tutor
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Describe the different levels of protein structure during the production of a protein

Primary Structure : Peptide bonds form between the carboxyl and amino groups of adjacent amino acids, forming a long polypeptide chain . Secondary Structure : Reactions and interactions, such as hydrogen bon...
GT
Answered by Grace T. • Biology tutor
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