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Tutor profile: Sagaana S.

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Sagaana S.
Biology Tutor
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Questions

Subject: Basic Math

TutorMe
Question:

Solve the simultaneous equation: y = -x + 2 y = x^2 + 2x - 1

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Sagaana S.
Answer:

x = -3.79, y = 5.79 or x = 0.791, y = 1.21

Subject: Biomedical Science

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Question:

Oxaloacetate is sometimes discussed as a possible therapy for people diagnosed with diabetes. Briefly discuss the logic behind this. Do you think this would work?

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Sagaana S.
Answer:

Oxaloacetate is an immediate of the citric acid cycle which promotes ATP production. It reacts with the acetyl-coA to form citrate. In diabetics it promotes gluconeogenesis. This happens because glucose is filtered from the blood during ultrafiltration causing low blood glucose levels. The lack of insulin means the lack of glycogen stores. This means that glycogen cannot be used as a glucoregulatory method. This means that fats/amino acids are broken down to form glucose, however are converted into into ketone bodies. Too many ketone bodies in the blood can lead to diabetic ketoacidosis. The increase of glucose levels can also be life threatening to diabetics.

Subject: Biochemistry

TutorMe
Question:

Which of the following statements about an action potential is incorrect? a. they trigger the release of calcium ions at the presynaptic terminal. b. hyperpolarization makes it less likely they will be generated c. their magnitude can be affected by presynaptic inhibition d. they are generated when the membrane potential passes a threshold e. their propagation down the axon involves voltage-gated channels.

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Sagaana S.
Answer:

C. The answer is C. This is because the magnitude of an action potential is affect by factors such as temperature and the depolarisation of the axon membrane.

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