Chapter 3

Organic molecules consist mainly of _____ atoms. a. carbon b. carbon and oxygen c. carbon and hydrogen d. carbon and nitrogen

Each carbon atom can bond with as many as _________ other atom(s).

______ groups are the "acid" part of amino acids and fatty acids. a. Hydroxyl \((-\mathrm{OH})\) b. Carboxyl \((-\mathrm{COOH})\) c. Methyl \(\left(-\mathrm{CH}_{3}\right)\) d. Phosphate \(\left(-\mathrm{PO}_{4}\right)\)

________ is a simple sugar (a monosaccharide). a. Glucose b. Sucrose c. Ribose d. Starch e. both a and \(\vec{c}\) f. \(a, b,\) and \(c\)

Unlike saturated fats, the fatty acid tails of unsaturated fats incorporate one or more _______. a. phosphate groups b. glycerols c. double bonds d. single bonds

Is this statement true or false? Unlike saturated fats, all unsaturated fats are beneficial to health because their fatty acid tails kink and do not pack together.

Steroids are among the lipids with no ________, a. double bonds b. fatty acid tails c. hydrogens d. carbons

Name three kinds of carbohydrates that can be built using only glucose monomers.

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. steroids 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

_________ consist \((\mathrm{s})\) of nucleotides. a. Sugars b. DNA c. RNA d. \(b\) and \(c\)