Cellulase is an enzyme some organisms use to digest cellulose, which is present in plant cell walls. Which statement best describes the role of cellulase in this reaction? It increases the time the reaction takes to occur
It changes the pH of cells in which the reaction occurs
It raises the temperature at which the reaction can occur
It reduces the amount of energy needed to start the reaction

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other