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Tutor profile: Matt R.

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Matt R.
Medical Student experienced in natural sciences
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Questions

Subject: Biology

TutorMe
Question:

Explain, in your own words, the difference between Darwin's theory of natural selection and Lamarck's theory of evolution.

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Matt R.
Answer:

While Darwin believed in random variation from which favourable traits were selected and eventually amplified through time, Lamarck believed that traits aquired throughout life were passed on to subsequent generations.

Subject: Medicine

TutorMe
Question:

Describe the pathophysiology and treatments options for heart failure with preserved ejection fraction.

Inactive
Matt R.
Answer:

Heart failure with preserved ejection fraction is caused by either hypertrophic cardiomyopathy or in response to an increased afterload. The myocardium hypertrophies to generate more tension to counteract the high pressure against which it needs to contract. Treatment options for heart failure include beta blockade, digoxin, diuresis and vasodilation.

Subject: Natural Sciences

TutorMe
Question:

What is the difference between an ionic and a covalent bond?

Inactive
Matt R.
Answer:

In an ionic bond, an electron is exchanged from one atom to another whereas in a covalent bond, the electron is shared between two atoms.

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