Help please , google answers aren’t helping

1.) Nucleic acid is an important class of macromolecules found in all cells and viruses.

2.) Two examples of nucleic acids include deoxyribonucleic acid (better known as DNA) and ribonucleic acid (better known as RNA). These molecules are composed of long strands of nucleotides held together by covalent bonds.

3.) Amino acids are the monomers that make up proteins.

4.) Phosphorus, Selenium, Iron, Zinc, Copper, Manganese, and Potassium.

5.)  Protein helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions.

6.)     Actin, tubulin, keratin.

You're welcome. Took a while, but worth it--

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.