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Question: Palmitate uniformly labeled with the radioisotope 3H to a specific activity of 2.5 x 108 cpm (counts per minute; i.e., amount of radioactivity) per micromole of palmitate is added to mitochondria, which oxidize it to acetyl-CoA. All acetyl-CoA is isolated and hydrolyzed to acetate and CoA. The specific activity […]

Discussion Part Two (graded) Physical examination Vital Signs: Height: 5 feet 7 inches Weight: 170 pounds Waist Circumference – 32 inches BP 130/84 T 98.0 po P 92 regular R 22, non-labored HEENT: normocephalic, symmetric. Evidence of prior cataract surgery in both eyes. PERRLA, EOMI, cerumen impaction bilateral ears. Several broken […]

Hydrogen peroxide decomposes to water and oxygen. Discuss the molecular mechanisms behind the difference in rates or activation energy of the uncatalyzed reaction, the reaction catalyzed by ferric ions, and the reaction catalyzed by the enzyme catalase. Why is the activation energy barrier essential for life as we know it? […]

Q1. Barbara McClintock, famous for discovering that genes might move within genomes, had her meticulous work ignored for nearly 4 decades, but eventually won the Nobel Prize. Why was her work so distrusted? Q2. Structures as different as human arms, bat wings, and dolphin flippers contain many of same bones, […]