Anatomy and chemisty Question 1 Write a response to the questions in the discussion forum: • Why can’t you hold your own breath forever? Yes, it is because you run out of oxygen, but what cellular chemistry changes occur as you hold your breath (blood pH, carbonate/CO2 levels, etc.)? • […]

Question: Suppose a DNA mutation changes the consensus sequence at the -35 location so that sigma factor does not bind there as well. Explain how a mutation could inhibit the binding of sigma factor to DNA. Describe two specific base substitutions you think would inhibit the binding of sigma factor. Explain […]

Discoveries in DNA, cell biology, evolution, biotechnology have been among the major achievements in biology over the past 200 years with accelerated discoveries and insights over the last 50 years. Consider the progress we have made in these areas of human knowledge. Present at least three of the discoveries you […]

Q. Fibrinopeptides (proteins involved in the blood clotting, among other functions) are called to have high amino acid substation rates. Suppose that the average per amino acid site substitution rate in mammalian fibrinogen b (roughly 600 amino acids long) is one substitution every 10 million years. If humans and shrews […]