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Tutor profile: Lyuda K.

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Lyuda K.
Ph.D. in Biological Sciences
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Questions

Subject: Biomedical Science

TutorMe
Question:

What is the probability that a man who has hemophilia, an X-linked recessive disorder, will pass it on to his son?

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Lyuda K.
Answer:

The probability is zero. If the man has a son, he will have given him his Y chromosome, not his X chromosome. Given that the allele for the disorder is on his X chromosome, the son is safe.

Subject: Biochemistry

TutorMe
Question:

During dehydration synthesis between two amino acids, where does the water molecule come from?

Inactive
Lyuda K.
Answer:

The water molecule comes from union of the hydroxyl group (-OH) of the carboxylic acid from the first amino acid with a hydrogen ion from the amino group of the second amino acid.

Subject: Biology

TutorMe
Question:

What is the original source of all of the energy that fuels our bodily functions?

Inactive
Lyuda K.
Answer:

The sun. Plants (and other photosynthetic organisms) convert the energy in the sun's rays into high-energy molecules like glucose. When animals eat plants, their bodies absorb these high-energy molecules and break them apart to power their bodily functions and build other energy-containing molecules. When we eat plants or animals, our bodies break apart their molecules to use the energy stored there, energy that originally came from the sun!

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