Which type of biomolecule is used as a catalyst in chemical reactions to lower activation energy

Nucleic Acids

Explanation:

Nucleic Acids, cont. Enzymes are biological catalysts that speed up chemical reactions (to change one set of chemicals to another) by lowering their activation energy.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

the correct answer is b