L-arabinose is a naturally occurring, non-caloric sweetener that is a non-competitive inhibitor of sucrase. if l-arabinose is present, what will happen to the vmax of the reaction and km of the substrate?

a) vmax and km will both increase
b) vmax and km will both decrease
c) vmax will not change, but km will decrease
d) vmax will decrease, but km will not change
e) vmax will decrease, and km will increase

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.