Researchers want to identify the impact of cholesterol on the development of heart disease. They follow individuals who are vegan, vegetarian, and meat-eaters for 10 years and they record if any of them experience a heart attack. What kind of epidemiologic study was this?     A. Cohort   B. […]

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? […]

Question: Gel filtration column (60 mL) was calibrated with blue dextran, its elution volume found to be 17.4 mL. Then, unknown protein and BSA (MW 66 kDa) were ran through the same column and eluted in 43 mL and 36 mL correspondingly. a) what is the void volume for the column? […]

Read the Controversy 8 – Osteoporosis: Can Lifestyle Choices Reduce the Risks? Take this osteoporosis risk survey below. http://www.yourdiseaserisk.wustl.edu/hccpquiz.pl?lang=english&func=home&quiz=osteoporosis What is your risk? At the end of the survey, click on “What Makes Up My Risk.” Tell which factors raised and lowered your risk. Read the section on Sodium and […]