Chapter 7, Problem 2RQ

Which of the following statements is not true? Metabolic pathways _____. a. occur in a stepwise series of chemical reactions b. are speeded up by enzymes c. may break down or assemble molecules d. always produce energy (such as ATP)

________ are always changed by participating in a reaction. a. Enzymes c. Reactants b. Cofactors d. Coenzymes

Which of the following is not true about enzymes? a. They are consumed by the reactions they catalyze. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.

Which of the following statements is not correct? a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously. d. Energy can be transferred.

Does physical exercise to increase muscle mass involve anabolic and/or catabolic processes? Give evidence for your answer.

Energy is stored long-term in the bonds of _____ and used short-term to perform work from a(n)_____molecule. a. ATP : glucose b. an anabolic molecule : catabolic molecule c. glucose: ATP d. a catabolic molecule : anabolic molecule

Match each type of molecule with its description. _________ chain of amino acids _________ energy carrier _________ glycerol, fatty acids, _________ phosphate _________ chain of nucleotides _________ one or more sugar units a. carbohydrate b. phospholipid c. protein d. DNA e. ATP

An example of a monosaccharide is ________. a. fructose b. glucose c. galactose d. all of the above

The mutual attraction of opposite charges holds atoms together as molecules in a(n) _____ bond. a. ionic b. hydrogen c. polar covalent d. nonpolar covalent