Which statement best describes an individual enzyme? a. it lowers the activation energy of a reaction and affects many different types of reactions. b. it raises the activation energy of a reaction in the affects many different types of reactions . c. it lowers the activation energy of a reaction in affects only very specific reactions. d. it raises the activation energy of a reaction affects only very specific reactions.

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.

Which factor most likely caused animals and plants in india to differ greatly from species in nearby southeast asia?

10 15 20 time (minutes) using the graph of data from this experiment, at which point was the light source most likely removed? ob