Test Bank - Chapter 3 the Chemical
Building Blocks of Life Exam Questions
and Answers
Organic molecules have a carbon backbone and ________ such as -OH and -NH2 that
affect their chemical properties. - Answer-Functional Groups
A polysaccharide that is composed of modified glucose subunits and that is found in the
exoskeletons of insects and crustaceans is known as: - Answer-Chitin
These biological compounds are nonpolar and insoluble in water: - Answer-Lipids
A DNA molecule containing 32% thymine would contain how much cytosine? - Answer-
18 %
The covalent bonds connecting monomer units in sugars can be formed by the removal
of a water molecule. This reaction is referred to as: - Answer-Dehydration Reaction
This atom in its unbound state has four valence electrons. These electrons readily form
single, double, and even triple bonds among themselves to become stable. This atom
is: - Answer-Carbon
Macromolecules are broken down to monomers in ________ - Answer-Hydrolysis
Relatively small organic molecules with a central carbon atom which is bonded to a
carboxyl group, an amino group, a carbon containing group, and a hydrogen atom are
called: - Answer-Amino acids
Macromolecules that are used by all organisms to store hereditary information are
called: - Answer-DNA molecules
DNA and RNA contain functional units known as: - Answer-Nucleotides
Carbohydrates are polymers formed of structural units called: - Answer-
Monosaccharides
Proteins are polymers formed of structural units called: - Answer-Amino acids
Lipids are the only class of macromolecules that contain: - Answer-Fatty acids
A double stranded DNA strand contains 26 pyrimidines. How many purines will the
copied strand contain? - Answer-26
Building Blocks of Life Exam Questions
and Answers
Organic molecules have a carbon backbone and ________ such as -OH and -NH2 that
affect their chemical properties. - Answer-Functional Groups
A polysaccharide that is composed of modified glucose subunits and that is found in the
exoskeletons of insects and crustaceans is known as: - Answer-Chitin
These biological compounds are nonpolar and insoluble in water: - Answer-Lipids
A DNA molecule containing 32% thymine would contain how much cytosine? - Answer-
18 %
The covalent bonds connecting monomer units in sugars can be formed by the removal
of a water molecule. This reaction is referred to as: - Answer-Dehydration Reaction
This atom in its unbound state has four valence electrons. These electrons readily form
single, double, and even triple bonds among themselves to become stable. This atom
is: - Answer-Carbon
Macromolecules are broken down to monomers in ________ - Answer-Hydrolysis
Relatively small organic molecules with a central carbon atom which is bonded to a
carboxyl group, an amino group, a carbon containing group, and a hydrogen atom are
called: - Answer-Amino acids
Macromolecules that are used by all organisms to store hereditary information are
called: - Answer-DNA molecules
DNA and RNA contain functional units known as: - Answer-Nucleotides
Carbohydrates are polymers formed of structural units called: - Answer-
Monosaccharides
Proteins are polymers formed of structural units called: - Answer-Amino acids
Lipids are the only class of macromolecules that contain: - Answer-Fatty acids
A double stranded DNA strand contains 26 pyrimidines. How many purines will the
copied strand contain? - Answer-26
