AP Biology (Mader), 11th Edition

Chapter 3: The Chemistry of Organic Molecules

Post-Test

1
Which of the following is a polymer?
A)Nucleic acid
B)Amino acid
C)Fatty acid
D)Glycerol
2
Which of the following is NOT one of the classes of primary organic molecules?
A)Carbohydrates
B)Proteins
C)Salts
D)Nucleic acids
3
The process by which polymers are broken down into monomer subunits is called__________.
A)dehydration synthesis
B)ionization
C)hydrolysis
D)phagocytosis
4
The genetic material that stores information about the order of amino acids in a protein is _____.
A)ATP
B)Triglyceride
C)DNA
5
The three-dimensional shape of a polypeptide is referred to as its _____.
A)primary structure
B)secondary structure
C)tertiary structure
D)quaternary structure
6
The nucleotide based molecule that supplies energy for transport across a membrane is _______.
A)adenosine triphosphate
B)guanine
C)thymine
D)cytosine
7
The two strands of DNA are held together by _____ between the purine and pyrimidine bases.
A)ionic bonds
B)hydrogen bonds
C)covalent bonds
8
The bond between two amino acids is ______.
A)formed by hydrolysis
B)an ionic bond
C)nonpolar
D)known as a peptide bond
9
Which of the following statements about fats in our diets is NOT true?
A)Fats are an essential part of the diet.
B)Fats have less than half of the caloric density of carbohydrates.
C)Trans fat consumption increases the risk of coronary heart disease.
D)Unsaturated fats are healthier components of a diet than are saturated fats.
10
Hydrolysis of a triglyceride produces _____.
A)many amino acids
B)different types of nucleotides
C)fatty acids and glycerol
D)monosaccharides
11
Choose the association between monomer and polymer that is INCORRECT.
A)monosaccharide - polysaccharide
B)nucleic acid - DNA
C)nucleotide - nucleic acid
D)amino acid - polypeptide
12
In DNA, thymine always pairs with: ________.
A)uracil
B)adenine
C)guanine
D)cytosine
13
A nucleotide consists of all of the following EXCEPT:
A)Sugar
B)Nitrogen-containing base
C)Phosphate group
D)Amine group
14
The action of disrupting the three-dimensional shape of a protein is termed _______.
A)dehydration
B)denaturation
C)deamination
D)hydrolysis
15
Fats which have one or more double bonds within their fatty acid tails are _____ fats.
A)saturated
B)waxy
C)unsaturated
D)greasy
16
Polysaccharides, the complex carbohydrates, break down into reduced/simple sugars during which of the following processes?
A)Hydrolysis
B)Osmosis
C)Dehydration synthesis
D)Electron transport
17
Lipids are used by the body to perform all of the following functions EXCEPT:
A)membrane structural material.
B)enzyme action.
C)insulation.
D)a rich energy source.
18
To which group of organic compounds do both DNA and RNA belong?
A)Amino acids
B)Fatty acids
C)Nucleic acids
D)Proteins
19
Which statement best describes the behavior of carbon?
A)Carbon can share pairs of electrons with a maximum of two other atoms.
B)Carbon can share pairs of electrons with as many as six other atoms.
C)Carbon can lose up to three atoms.
D)Carbon can share pairs of electrons with as many as four other atoms.
20
Complex carbohydrates are stored in animals in the form of:
A)cellulose.
B)glycerol.
C)glycogen.
D)lactose.
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