Question

macromolecules are large molecules composed of thousands of covalently connected atoms, also called polymers. a polymer is a long molecule consisting of many similar building - blocks; the small building - block molecules are called monomers. all cells have thousands of different macromolecules, that vary among cells of an organism, vary more within a species, and vary even more between species. a huge variety of polymers can be built from a small set of monomers. what statements are true about the biological macromolecules. (choose 3) a all biomolecules could be called carbon - based molecules. b the monomers of dna are nucleotides. c ready cellular energy comes in the form of lipids. d carbohydrates contain nitrogen and therefore differ from the other macromolecules. e cell membranes are made, in part, from phospholipids.

Explanation:

• Biomolecules are carbon - based as carbon is a key element in their structure.
• DNA is a polymer and its monomers are nucleotides.
• Cell membranes have a phospholipid bilayer, so they are made in part from phospholipids. Cellular energy is mainly in the form of ATP, not lipids. Carbohydrates typically do not contain nitrogen.

Answer:

A. All biomolecules could be called carbon - based molecules
B. The monomers of DNA are nucleotides
E. Cell membranes are made, in part, from phospholipids