Chapter 3

Each carbon atom can share pairs of electrons with as many as _____________ other atom(s). a. one b. two c. three d. four

_____________is a simple sugar (a monosaccharide). a. Glucose b. Sucrose c. Ribose d. Chitin e. both a and b f. both a and c

Unlike saturated fats, the fatty acid tails of unsaturated fats incorporate one or more_______________. a. single covalent bonds \(\quad\) b. double covalent bonds

Sterols are among the lipids with no ________________. a. saturation b. fatty acids tails c. hydrogens d. carbons

Which of the following is a class of molecules that encompasses all of the other molecules listed? a. triglycerides b. fatty acids c. waxes d. sterols e. lipids f. phospholipids

___________are to proteins as ________________ are to nucleic acids. a. Sugars; lipids b. Sugars; proteins c. Amino acids; hydrogen bonds d. Amino acids; nucleotides lost its

A denatured protein has lost its _____________. a. hydrogen bonds b. shape c. function d. all of the above

____________consists of nucleotides. a. ATP b. DNA c. RNA d. all are correct

Which of the following nucleotides is not found in DNA? a. adenine b. uracil c. thymine d. guanine

Match each molecule with its most suitable description. ____________long chain of amino acids ____________energy carrier in cells ____________glycerol, fatty acids, phosphate ____________two strands of nucleotides ____________one or more sugar monomers a. carbohydrate b. phospholipid c. polypeptide d. DNA e. ATP