Tutor profile: Lyuda K.
Subject: Biomedical Science
What is the probability that a man who has hemophilia, an X-linked recessive disorder, will pass it on to his son?
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.
During dehydration synthesis between two amino acids, where does the water molecule come from?
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.
What is the original source of all of the energy that fuels our bodily functions?
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!
needs and Lyuda will reply soon.