9) the tools in the lab are expensive because... they are made with small parts that are not available everywhere.
only one country carries the supplies.
they are made with large parts available for purchase everywhere.
they are different for every lab, hand crafted.
only one store sells em.

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.