Nutritionists advise reduced intake of trans fats for which of the following reasons? a. They increase levels of low-density lipoproteins (LDL), or "bad" cholesterol b. They increase the risk of heart disease c. They provide more calories than other types of fat. d. A and B

Feedback mechanisms regulate the rate of enzyme activity, effectively "turning off' an enzyme in a reversible way until more product is needed. which of the following would be most effective as a feedback mechanism? a. reduced concentration of product b. increased concentration of substrate c. a change in ph d. temporary binding of a non-substrate molecule in the active site