Boiling affects enzyme-controlled reactions by
a. decreasing the energy of activation.
b. increasing the rate of reaction.
c. increasing the energy of activation.
d. denaturing the enzyme.

The population of bacteria in a petri dish doubles every 40 seconds. the population of the bacteria is initially 400 organisms. what unit is most appropriate for the time at which the number of bacteria is 300? hour bacteria per hour second bacteria per second

Aperson travels 35 km in 0.4hrs, followed by 53 km in 0.6 hr. what is the average speed

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent