12. A group of elements that has two electrons in its outer energy level is the
a. alkaline earth metals
c. alkali metals
b. halogens
d. actinides

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

Red flowered snapdragons are crossed with white flowered snapdragons, producing all pink snapdragons in the f1 generation. what would you expect if you crossed pink with pink? 3/4, 1/4, 1/2 red, 3/4,/1/2,/1/4 pink,1/2, 3/4, 1/4 white