Metabolic reactions are necessary for the body to function and maintain homeostasis. which of the following statements describes an enzyme’s role in these reactions? a. enzymes are formed into lipids. b. enzymes are catalysts that lower the activation energy allowing the reaction to occur. c. enzymes are used up as a part of the reaction and cannot be used again. d. enzymes can be any shape to bind to the substrate.

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

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

Support mangrove trees out of the water. a) pneumatophores b) prop roots c) sand dunes d) tide supports