BSC 2010 CHAPTER 2 EXAM QUESTIONS AND
100% CORRECT ANSWERS
Maltose is a disaccharide consisting of glucose monomers. What is the balanced chemical
reaction that expresses the biosynthesis of maltose?
1 glucose + 1 glucose → 1 water + 1 maltose
Which is not an example of potential energy?
Muscle contraction
Cellulose, starch, and glycogen are all polymers of glucose. Animals can hydrolyze starch
and glycogen but can't hydrolyze cellulose because it
contains different glycosidic linkages than starch or glycogen.
Which statement about chemical reactions is true?
Each chemical reaction involves a change in energy as the atoms in reactants rearrange to form
products.
How is water involved in the synthesis of a triglyceride compared to its involvement in the
synthesis of a disaccharide?
Both produce water as a product, but more water is produced per triglyceride molecule than per
disaccharide molecule.
The synthesis of the enzyme lipase would be classified as anabolic because
energy is captured in the bonds linking amino acids that compose lipase.
An atom with a net charge of zero contains a total of 17 electrons. The mass number of this
atom is _______, and it has _______ electrons in its outermost shell.
34; 7
An atom of carbon-12 differs from an atom of carbon-14 in
mass number.
When a chemical reaction occurs, changes in the form of _______ take place. This
represents the capacity of the reaction to _______.
energy; do work
Anabolic and catabolic reactions are often linked to allow one to drive the other. For
example, the breakdown of carbohydrates could be linked to
anabolism of lipids.
100% CORRECT ANSWERS
Maltose is a disaccharide consisting of glucose monomers. What is the balanced chemical
reaction that expresses the biosynthesis of maltose?
1 glucose + 1 glucose → 1 water + 1 maltose
Which is not an example of potential energy?
Muscle contraction
Cellulose, starch, and glycogen are all polymers of glucose. Animals can hydrolyze starch
and glycogen but can't hydrolyze cellulose because it
contains different glycosidic linkages than starch or glycogen.
Which statement about chemical reactions is true?
Each chemical reaction involves a change in energy as the atoms in reactants rearrange to form
products.
How is water involved in the synthesis of a triglyceride compared to its involvement in the
synthesis of a disaccharide?
Both produce water as a product, but more water is produced per triglyceride molecule than per
disaccharide molecule.
The synthesis of the enzyme lipase would be classified as anabolic because
energy is captured in the bonds linking amino acids that compose lipase.
An atom with a net charge of zero contains a total of 17 electrons. The mass number of this
atom is _______, and it has _______ electrons in its outermost shell.
34; 7
An atom of carbon-12 differs from an atom of carbon-14 in
mass number.
When a chemical reaction occurs, changes in the form of _______ take place. This
represents the capacity of the reaction to _______.
energy; do work
Anabolic and catabolic reactions are often linked to allow one to drive the other. For
example, the breakdown of carbohydrates could be linked to
anabolism of lipids.
