Please help me find this answer

Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. what could he have done to increase the validity of his data? reduce the number of plants. remove the 1 hour group. add a 0 hours control. measure the oxygen in liters

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes