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Tutor profile: Denys T.

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Denys T.
Biology and Biomedical tutor
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Questions

Subject: Biomedical Science

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Question:

What is a humoral immunity and how it works in the human body?

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Denys T.
Answer:

Humoral immunity is a type of immunity that maintained by antibodies, which are produced by B-cells. Once antigen is encountered in the blood, it becomes bound to the specific antibody and this antibody/antigen complex is capable of initiating an immune response.

Subject: Biology

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Question:

What are the functions of a rough endoplasmic reticulum (RER)?

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Denys T.
Answer:

There are multiple ribosomes located on the surface of the RER, therefore, the main function of RER is protein synthesis. Another functions include protein folding and protein quality control, meaning that the proteins are folded to produce desired biochemical architecture which enables them to become metabolically active. Protein quality control means that the protein are checked whether or not they have correct structure so those incorrectly folded are rejected.

Subject: Anatomy

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Question:

Which of the following is a correct way of blood flow? a) left ventricle - pulmonary valve - lungs b) right atrium - mitral valve - right ventricle - aortic valve - systemic circulation c) pulmonary veins - left atrium - mitral valve - left ventricle - aortic valve d) left ventricle - mitral valve - left atrium - aorta

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Denys T.
Answer:

The correct answer is C. There are four pulmonary veins running from the lungs to the left atrium and they carry oxygenated blood. There is a mitral valve located between left atrium and left ventricle. After the blood comes to the left ventricle, it is pumped out through the aortic valve into the aorta.

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