Cockroaches are exposed to a pesticide. After 3 hours, 95% of the insects are dead.

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

What kinds of molecules can pass through the cell membrane without any problem?

This diagram shows how seed plants are grouped. which is the missing label? bryophytes angiosperms pteridophytes monocots