Question 1

A single atom of carbon may form up to ____ covalent bonds with other atoms.

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
E)  6 
A)  2 
B)  3 
C)  4 
D)  5 
E)  6

Question 2

-____ are long-chain fatty acids attached to long-chain alcohols.

Accepted Answer

A)  Triglycerides 
B)  Phospholipids 
C)  Sterols 
D)  Waxes 
E)  Most neutral fats 
A)  Triglycerides 
B)  Phospholipids 
C)  Sterols 
D)  Waxes 
E)  Most neutral fats

Question 3

Amino acids are linked by what kind of bonds to form the primary structure of a protein?

Accepted Answer

A)  disulfide 
B)  hydrogen 
C)  ionic 
D)  peptide 
E)  none of these 
A)  disulfide 
B)  hydrogen 
C)  ionic 
D)  peptide 
E)  none of these

Question 4

Denaturation of proteins may result in all of the following EXCEPT

Accepted Answer

A)  breakage of hydrogen bonds. 
B)  loss of three-dimensional structure. 
C)  removal of R groups from amino acids. 
D)  alteration of enzyme activity. 
E)  endangerment of a cell's life. 
A)  breakage of hydrogen bonds. 
B)  loss of three-dimensional structure. 
C)  removal of R groups from amino acids. 
D)  alteration of enzyme activity. 
E)  endangerment of a cell's life.

Question 5

How are cellulose and starch similar and how do they differ?

Accepted Answer

Both cellulose and starch are complex ca

Question 6

Typical fat molecules have ____ chain(s).

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 7

-Oligosaccharides include

Accepted Answer

A)  sucrose. 
B)  glucose. 
C)  fructose. 
D)  lactose 
E)  both sucrose and lactose. 
A)  sucrose. 
B)  glucose. 
C)  fructose. 
D)  lactose 
E)  both sucrose and lactose.

Question 8

An -NH2 group is a(n) ____ group.

Accepted Answer

A)  carboxyl 
B)  hydroxyl 
C)  amine 
D)  methyl 
E)  carbonyl 
A)  carboxyl 
B)  hydroxyl 
C)  amine 
D)  methyl 
E)  carbonyl

Question 9

-Monosaccharides may be characterized by all EXCEPT which of the following?

Accepted Answer

A)  a ketone group 
B)  carbon, hydrogen, and oxygen in a 1:2:1 ratio 
C)  a backbone of five to six carbon atoms 
D)  one carbonyl group 
E)  the presence of glycerol and fatty acids 
A)  a ketone group 
B)  carbon, hydrogen, and oxygen in a 1:2:1 ratio 
C)  a backbone of five to six carbon atoms 
D)  one carbonyl group 
E)  the presence of glycerol and fatty acids

Question 10

Nucleotides contain what kind of sugars?

Accepted Answer

A)  three-carbon 
B)  four-carbon 
C)  five-carbon 
D)  six-carbon 
E)  seven-carbon 
A)  three-carbon 
B)  four-carbon 
C)  five-carbon 
D)  six-carbon 
E)  seven-carbon

Question 11

A denatured protein has lost its __________.

Accepted Answer

The answer of A denatured protein has lost its __________....

Question 12

Which molecule is incorrectly matched with its monomer?

Accepted Answer

A)  fat; fatty acid 
B)  starch; ribose 
C)  protein; amino acid 
D)  glycogen; glucose 
E)  nucleic acids; nucleotide 
A)  fat; fatty acid 
B)  starch; ribose 
C)  protein; amino acid 
D)  glycogen; glucose 
E)  nucleic acids; nucleotide

Question 13

Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group.
a.-COOH
b.-CHS1U1B13S1U1B0
c.-NHS1U1B12S1U1B0
d.-OH
e.   
f.-POS1U1B14S1U1B0S1U1P13S1S1P0S1U1P1-S1S1P0
g.-CHO
-the group on the carboxyl-terminal end of proteins

Accepted Answer

The answer of Classification.The following are chemical functional groups that...

Question 14

Fats are major constituents of

Accepted Answer

A)  proteins. 
B)  genes. 
C)  photosynthesis. 
D)  cell membranes. 
E)  all of these. 
A)  proteins. 
B)  genes. 
C)  photosynthesis. 
D)  cell membranes. 
E)  all of these.

Question 15

In biology, many complementary processes exist.Explain how condensation reactions are complementary to hydrolysis reactions.

Accepted Answer

In condensation reactions, a hydroxyl io

Question 16

Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group.
a.-COOH
b.-CHS1U1B13S1U1B0
c.-NHS1U1B12S1U1B0
d.-OH
e.   
f.-POS1U1B14S1U1B0S1U1P13S1S1P0S1U1P1-S1S1P0
g.-CHO
-the carboxyl group

Accepted Answer

The answer of Classification.The following are chemical functional groups that...

Question 17

MATCHING
Matching.Choose the one most appropriate item from its description.
a.a six-carbon sugar
b.found in DNA and RNA
c.principal components of cell membranes
d.affect metabolic reaction rates
-nucleotide

Accepted Answer

The answer of MATCHING
Matching.Choose the one most appropriate item from...

Question 18

-What kind of reaction produces large molecules by linking small molecules?

Accepted Answer

A)  oxidation 
B)  reduction 
C)  condensation 
D)  hydrolysis 
E)  decarboxylation 
A)  oxidation 
B)  reduction 
C)  condensation 
D)  hydrolysis 
E)  decarboxylation

Question 19

-Fructose and glucose are

Accepted Answer

A)  isotopes. 
B)  monosaccharides. 
C)  disaccharides. 
D)  six-carbon sugars. 
E)  both monosaccharides and six-carbon sugars. 
A)  isotopes. 
B)  monosaccharides. 
C)  disaccharides. 
D)  six-carbon sugars. 
E)  both monosaccharides and six-carbon sugars.

Question 20

Explain why vigorous exercise in warm weather could be hazardous to your enzymes?

Accepted Answer

For enzymes, a class of proteins, to fun

Exam 3: Molecules of Life

A single atom of carbon may form up to ____ covalent bonds with other atoms.

-____ are long-chain fatty acids attached to long-chain alcohols.

Amino acids are linked by what kind of bonds to form the primary structure of a protein?

Denaturation of proteins may result in all of the following EXCEPT

How are cellulose and starch similar and how do they differ?

Typical fat molecules have ____ chain(s).

-Oligosaccharides include

An -NH2 group is a(n) ____ group.

-Monosaccharides may be characterized by all EXCEPT which of the following?

Nucleotides contain what kind of sugars?

A denatured protein has lost its __________.

Which molecule is incorrectly matched with its monomer?

Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group. a.-COOH b.-CH3 c.-NH2 d.-OH e. f.-PO43- g.-CHO -the group on the carboxyl-terminal end of proteins

Fats are major constituents of

In biology, many complementary processes exist.Explain how condensation reactions are complementary to hydrolysis reactions.

Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group. a.-COOH b.-CH3 c.-NH2 d.-OH e. f.-PO43- g.-CHO -the carboxyl group

MATCHING Matching.Choose the one most appropriate item from its description. a.a six-carbon sugar b.found in DNA and RNA c.principal components of cell membranes d.affect metabolic reaction rates -nucleotide

-What kind of reaction produces large molecules by linking small molecules?

-Fructose and glucose are

Explain why vigorous exercise in warm weather could be hazardous to your enzymes?

Invitation to Biology

Lifes Chemical Basis

Cell Structure and Function

Ground Rules of Metabolism

Where It Startsphotosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information About Species

Lifes Origin and Early Evolution

Viruses and Prokaryotes

Protiststhe Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolutionthe Invertebrates

Animal Evolutionthe Chordates

Animal Evolutionhuman Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

An -NH₂group is a(n) ____ group.

Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group. a.-COOH b.-CH₃ c.-NH₂ d.-OH e. f.-PO₄³^- g.-CHO -the group on the carboxyl-terminal end of proteins

Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group. a.-COOH b.-CH₃ c.-NH₂ d.-OH e. f.-PO₄³^- g.-CHO -the carboxyl group