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Tutor profile: Ryan S.

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Ryan S.
A physician with a fun and engaging teaching style.
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Questions

Subject: MCAT

TutorMe
Question:

The genetic code is considered 'Degenerative' because the 3rd base in a codon can _________, which goes against standard Watson-Crick rules.

Inactive
Ryan S.
Answer:

Wobble. Due to this, multiple codons code for the same ammino acid. Hence, why there are 64 possible codons, but only 20 unique ammino acids (in humans). This is what is meant by 'degenerative' genetic code.

Subject: Health and Medicine

TutorMe
Question:

What is the general purpose of a B-Cell (Lymphocyte)?

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Ryan S.
Answer:

B-Cells are apart of the adaptive immune system, which is responsible for protecting the body from antigens (foreign organisms or molecules). They primarily work by producing antibodies that bind to these foreign antigens. Antibody binding can inactivate the antigen's binding sites directly as well as initiate opsonization by other immune cells. Additionally, the subset of Memory B-Cells "remember" what antibodies they released in response to specific antigens. This helps reduce the response time for antibody release if they encounter the same antigen in the future.

Subject: Biomedical Science

TutorMe
Question:

You are in the lab looking at a biopsy sample of a vessel that that the surgeon was unable to identify at the time of surgery. You notice that this sample has an endothelium, internal & external elastic lamina, and a thick smooth muscle layer. What type of vessel is this most likely to be? a) Artery b) Lymphatic Trunk c) Vein

Inactive
Ryan S.
Answer:

a) Artery They have thick smooth muscles layers to help withstand the higher systolic blood pressures they face.

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