Question 1

Fats and oils differ in the nature of the acid components in the triglycerides.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following do humans have difficulty digesting?

Accepted Answer

A)  cellulose 
B)  proteins 
C)  vegetable oils 
D)  vegetable starch 
E)  animal fats 
A)  cellulose 
B)  proteins 
C)  vegetable oils 
D)  vegetable starch 
E)  animal fats

Question 3

Which of the following is a pyrimidine?

Accepted Answer

A)  thymine 
B)  adenine 
C)  glycine 
D)  arginine 
E)  pyridine 
A)  thymine 
B)  adenine 
C)  glycine 
D)  arginine 
E)  pyridine

Question 4

Find a mismatch in the following body part - food metabolism pairs:

Accepted Answer

A)  mouth - starch 
B)  small intestine - polysaccharides 
C)  small intestine - fats and oils 
D)  stomach - proteins 
E)  stomach - polypeptides 
A)  mouth - starch 
B)  small intestine - polysaccharides 
C)  small intestine - fats and oils 
D)  stomach - proteins 
E)  stomach - polypeptides

Question 5

Choose the INCORRECT statement.

Accepted Answer

A)  A levorotatory isomer rotates plane polarized light to the left. 
B)  A chiral atom is said to be asymmetric. 
C)  The absolute configuration is the arrangement of atoms as determined by x-ray studies. 
D)  Molecules that are optically active isomers but not mirror images are diastereomers. 
E)  Enantiomer properties differ only in the direction they rotate plane polarized light. 
A)  A levorotatory isomer rotates plane polarized light to the left. 
B)  A chiral atom is said to be asymmetric. 
C)  The absolute configuration is the arrangement of atoms as determined by x-ray studies. 
D)  Molecules that are optically active isomers but not mirror images are diastereomers. 
E)  Enantiomer properties differ only in the direction they rotate plane polarized light.

Question 6

Which of the following combinations make up the nucleic acid, RNA?

Accepted Answer

A)  ribose and the bases A, G, U, C 
B)  ribose and the bases A, G, T, C 
C)  deoxyribose and the bases A, G, T, C 
D)  deoxyribose and the bases A, G, U, C 
A)  ribose and the bases A, G, U, C 
B)  ribose and the bases A, G, T, C 
C)  deoxyribose and the bases A, G, T, C 
D)  deoxyribose and the bases A, G, U, C

Question 7

Choose the INCORRECT statement.

Accepted Answer

A)  Tissues are the fundamental unit of all life. 
B)  Tissues group into organs. 
C)  Organs combine into organisms. 
D)  A nucleus, mitochondria, and chloroplasts are components of cells. 
E)  Living tissue is synthesized from simple precursors: N2, H2O, CO2. 
A)  Tissues are the fundamental unit of all life. 
B)  Tissues group into organs. 
C)  Organs combine into organisms. 
D)  A nucleus, mitochondria, and chloroplasts are components of cells. 
E)  Living tissue is synthesized from simple precursors: N2, H2O, CO2.

Question 8

What is the zwitterion form of the amino acid cysteine?

Accepted Answer

A)  NH3+-CH(CH2SH)CO2- 
B)  NH3+-CH(CH2S-)CO2H 
C)  NH3+-CH(CH2SH)CO2H 
D)  NH2-CH(CH2SH)CO2- 
A)  NH3+-CH(CH2SH)CO2- 
B)  NH3+-CH(CH2S-)CO2H 
C)  NH3+-CH(CH2SH)CO2H 
D)  NH2-CH(CH2SH)CO2-

Question 9

Choose the INCORRECT statement.

Accepted Answer

A)  Glycogen is the main structural material of plants. 
B)  Carbohydrates are produced in plants by the photosynthesis reaction. 
C)  Oligosaccharides contain 2 to 10 saccharide units. 
D)  Polysaccharides contain more than 10 saccharide units. 
E)  Monosaccharides contain one saccharide unit. 
A)  Glycogen is the main structural material of plants. 
B)  Carbohydrates are produced in plants by the photosynthesis reaction. 
C)  Oligosaccharides contain 2 to 10 saccharide units. 
D)  Polysaccharides contain more than 10 saccharide units. 
E)  Monosaccharides contain one saccharide unit.

Question 10

What is the absolute configuration of the following amino acids?

Accepted Answer

A)  1L, 2D, 3D 
B)  1l, 2d, 3d 
C)  1D, 2D, 3D 
D)  1L, 2L, 3L 
E)  1d, 2l, 3l 
A)  1L, 2D, 3D 
B)  1l, 2d, 3d 
C)  1D, 2D, 3D 
D)  1L, 2L, 3L 
E)  1d, 2l, 3l

Question 11

What is the complementary base sequence that corresponds to the following sequence of DNA bases?
TCGAGTTG

Accepted Answer

The answer of What is the complementary base sequence that...

Question 12

Choose the INCORRECT statement about metabolism.

Accepted Answer

A)  Catabolism is when substances are broken down. 
B)  Anabolism is the derivation of energy from substances. 
C)  Metabolites are substances involved in metabolism. 
D)  Endergonic reactions are nonspontaneous. 
E)  Metabolism is the totality of an organism deriving energy from matter and excreting excess. 
A)  Catabolism is when substances are broken down. 
B)  Anabolism is the derivation of energy from substances. 
C)  Metabolites are substances involved in metabolism. 
D)  Endergonic reactions are nonspontaneous. 
E)  Metabolism is the totality of an organism deriving energy from matter and excreting excess.

Question 13

Choose the INCORRECT statement.

Accepted Answer

A)  The simplest carbohydrates are the oligosaccharides. 
B)  Mono- and oligosaccharides are called sugars. 
C)  Polysaccharides contain more than 10 monosaccharide units. 
D)  Starch and cellulose are polysaccharides. 
E)  The general term for all carbohydrates is glycoses. 
A)  The simplest carbohydrates are the oligosaccharides. 
B)  Mono- and oligosaccharides are called sugars. 
C)  Polysaccharides contain more than 10 monosaccharide units. 
D)  Starch and cellulose are polysaccharides. 
E)  The general term for all carbohydrates is glycoses.

Question 14

Guanine always pairs with cytosine.

Accepted Answer

A) True 
 B)False

Question 15

Predict the isoelectric point for tyrosine, 4-OHC6H4CH2CH(NH2)CO2H, given pKa1 = 2.2 and pKa2 = 9.1.

Accepted Answer

A)  5.7 
B)  6.9 
C)  11.3 
D)  7.0 
A)  5.7 
B)  6.9 
C)  11.3 
D)  7.0

Question 16

When the equation for the oxidation of glucose is balanced, the coefficients are: ________. C6H12O6 + O2 → CO2 + H2O

Accepted Answer

A)  2, 6, 12, 12 
B)  1, 3, 6, 6 
C)  1, 6, 6, 6 
D)  1, 9, 6, 12 
E)  4, 2, 4, 2 
A)  2, 6, 12, 12 
B)  1, 3, 6, 6 
C)  1, 6, 6, 6 
D)  1, 9, 6, 12 
E)  4, 2, 4, 2

Question 17

DNA contains the sugar ribose.

Accepted Answer

A) True 
 B)False

Question 18

Choose the INCORRECT statement.

Accepted Answer

A)  The nucleus of the cell contains chromosomes that cause replication from one generation to the next. 
B)  Genes are portions of the chromosome that carry specific traits. 
C)  The usual form for DNA is a double helix. 
D)  Nucleic acids are made up of heterocyclic amines, a 5-carbon sugar and phosphate groups. 
E)  The bases in the two chains of the double helix are randomly paired. 
A)  The nucleus of the cell contains chromosomes that cause replication from one generation to the next. 
B)  Genes are portions of the chromosome that carry specific traits. 
C)  The usual form for DNA is a double helix. 
D)  Nucleic acids are made up of heterocyclic amines, a 5-carbon sugar and phosphate groups. 
E)  The bases in the two chains of the double helix are randomly paired.

Question 19

What is the name of the following tripeptide (the names of each amino acid are given directly below its position in the tripeptide)?

Accepted Answer

A)  lysylserylaspartate 
B)  aspartylserinyllysine 
C)  aspartyllysinylserine 
D)  aspartineserinelysine 
E)  aspartylseryllysine 
A)  lysylserylaspartate 
B)  aspartylserinyllysine 
C)  aspartyllysinylserine 
D)  aspartineserinelysine 
E)  aspartylseryllysine

Question 20

How many peptide bonds are present in a hexapeptide?

Accepted Answer

A)  4 
B)  5 
C)  6 
D)  7 
E)  3 
A)  4 
B)  5 
C)  6 
D)  7 
E)  3

Exam 28: Chemistry of the Living State

Fats and oils differ in the nature of the acid components in the triglycerides.

Which of the following do humans have difficulty digesting?

Which of the following is a pyrimidine?

Find a mismatch in the following body part - food metabolism pairs:

Choose the INCORRECT statement.

Which of the following combinations make up the nucleic acid, RNA?

Choose the INCORRECT statement.

What is the zwitterion form of the amino acid cysteine?

Choose the INCORRECT statement.

What is the absolute configuration of the following amino acids?

What is the complementary base sequence that corresponds to the following sequence of DNA bases? TCGAGTTG

Choose the INCORRECT statement about metabolism.

Choose the INCORRECT statement.

Guanine always pairs with cytosine.

Predict the isoelectric point for tyrosine, 4-OHC6H4CH2CH(NH2)CO2H, given pKa1 = 2.2 and pKa2 = 9.1.

When the equation for the oxidation of glucose is balanced, the coefficients are: ________. C6H12O6 + O2 → CO2 + H2O

DNA contains the sugar ribose.

Choose the INCORRECT statement.

What is the name of the following tripeptide (the names of each amino acid are given directly below its position in the tripeptide)?

How many peptide bonds are present in a hexapeptide?

Matter - Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Additional Aspects

Intermolecular Forces: Liquids and Solids

Solutions and Their Physical Properties

Chemical Kinetics

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Spontaneous Change: Entropy and Free Energy

Electrochemistry

Main Group Elements I: Groups 1, 2, 13, and 14

Main Group Elements II: Groups 18, 17, 16, 15, and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry 1-41

Structures of Organic Compounds

Reactions of Organic Compounds

Filters

Predict the isoelectric point for tyrosine, 4-OHC₆H₄CH₂CH(NH₂)CO₂H, given pKa₁ = 2.2 and pKa₂ = 9.1.

When the equation for the oxidation of glucose is balanced, the coefficients are: ________. C₆H₁₂O₆ + O₂ → CO₂+ H₂O