Transcript Chapter 3 CRS Questions

Chapter 3
Biological Molecules
Active Lecture Questions
Copyright © 2011 Pearson Education Inc.
Carbon can bond with ____ atom(s).
1.
2.
3.
4.
1
2
3
4
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Carbon can bond with ____ atom(s).
1.
2.
3.
4.
1
2
3
4
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Carbon’s ability to bond with up to four other
atoms is significant because:
1. It enables the synthesis of inorganic
molecules.
2. It allows for the formation of long chains and
rings.
3. All biological molecules have four covalent
bonds.
4. It leads to the creation of large monomers
from smaller polymers.
Biology: Life on Earth, 9e
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Carbon’s ability to bond with up to four other
atoms is significant because:
1. It enables the synthesis of inorganic
molecules.
2. It allows for the formation of long chains and
rings.
3. All biological molecules have four covalent
bonds.
4. It leads to the creation of large monomers
from smaller polymers.
Biology: Life on Earth, 9e
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What molecule is removed during dehydration
synthesis?
1.
2.
3.
4.
Carboxyl
Methyl
Phosphate
Water
Biology: Life on Earth, 9e
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What molecule is removed during dehydration
synthesis?
1.
2.
3.
4.
Carboxyl
Methyl
Phosphate
Water
Biology: Life on Earth, 9e
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Why is it so hard for most animals to break down
cellulose?
1. The lipid monomers of this polymer are
connected by bonds with unique
orientations.
2. It must be eaten with large amounts of fiber.
3. Most animals lack the enzymes that break
the bonds between the glucose molecules
of this polymer.
4. The high pH of cellulose denatures the
digestive enzymes of most animals.
Biology: Life on Earth, 9e
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Why is it so hard for most animals to break down
cellulose?
1. The lipid monomers of this polymer are
connected by bonds with unique
orientations.
2. It must be eaten with large amounts of fiber.
3. Most animals lack the enzymes that break
the bonds between the glucose molecules
of this polymer.
4. The high pH of cellulose denatures the
digestive enzymes of most animals.
Biology: Life on Earth, 9e
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Chitin differs from another long chain
polysaccharide, cellulose, in that the former has
what unique functional group?
1.
2.
3.
4.
Phosphate-containing functional group
Nitrogen-containing functional group
Sulfur-containing functional group
Carboxylic-containing functional group
Biology: Life on Earth, 9e
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Chitin differs from another long chain
polysaccharide, cellulose, in that the former has
what unique functional group?
1.
2.
3.
4.
Phosphate-containing functional group
Nitrogen-containing functional group
Sulfur-containing functional group
Carboxylic-containing functional group
Biology: Life on Earth, 9e
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Which is NOT a type of lipid?
1.
2.
3.
4.
Triglyceride
Wax
Oil
Peptide
Biology: Life on Earth, 9e
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Which is NOT a type of lipid?
1.
2.
3.
4.
Triglyceride
Wax
Oil
Peptide
Biology: Life on Earth, 9e
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If you were going on a long trip and could take
along only 10 pounds of food, it would be best to
select food from which group?
1. Carbohydrates, because they are an
immediate source of energy
2. Fats, because they contain more energy per
gram
3. Proteins, because they have a wide variety
of functions
4. Nucleic acids, because they contain the
instructions for making proteins
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
If you were going on a long trip and could take
along only 10 pounds of food, it would be best to
select food from which group?
1. Carbohydrates, because they are an
immediate source of energy
2. Fats, because they contain more energy per
gram
3. Proteins, because they have a wide variety
of functions
4. Nucleic acids, because they contain the
instructions for making proteins
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Besides three fatty acids, a triglyceride molecule
also has what other chemical group?
1.
2.
3.
4.
Glycerol
Phosphate
Variable functional group
Deoxyribose sugar
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Besides three fatty acids, a triglyceride molecule
also has what other chemical group?
1.
2.
3.
4.
Glycerol
Phosphate
Variable functional group
Deoxyribose sugar
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Which functional group makes each amino acid
different in structure?
1.
2.
3.
4.
Carboxyl
Amino
Hydroxyl
R
Biology: Life on Earth, 9e
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Which functional group makes each amino acid
different in structure?
1.
2.
3.
4.
Carboxyl
Amino
Hydroxyl
R
Biology: Life on Earth, 9e
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A peptide bond forms between which two
functional groups?
1.
2.
3.
4.
Hydroxyl and amino
Hydroxyl and carboxyl
Hydroxyl and methyl
Carboxyl and amino
Biology: Life on Earth, 9e
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A peptide bond forms between which two
functional groups?
1.
2.
3.
4.
Hydroxyl and amino
Hydroxyl and carboxyl
Hydroxyl and methyl
Carboxyl and amino
Biology: Life on Earth, 9e
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Why would changing the shape of a protein
change its function?
1. Like a key (protein) and lock (function), if
you change the shape of the key, it can no
longer open the lock.
2. Change in shape leads to more hydrophobic
interactions.
3. It wouldn’t; as long as the primary structure
is intact, the function won’t change.
4. Shape change will lead to a different amino
acid sequence.
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Why would changing the shape of a protein
change its function?
1. Like a key (protein) and lock (function), if
you change the shape of the key, it can no
longer open the lock.
2. Change in shape leads to more hydrophobic
interactions.
3. It wouldn’t; as long as the primary structure
is intact, the function won’t change.
4. Shape change will lead to a different amino
acid sequence.
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Which nitrogen-containing base is not found in
DNA?
1.
2.
3.
4.
Adenine
Uracil
Guanine
Cytosine
Biology: Life on Earth, 9e
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Which nitrogen-containing base is not found in
DNA?
1.
2.
3.
4.
Adenine
Uracil
Guanine
Cytosine
Biology: Life on Earth, 9e
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ATP and DNA are different because:
1. ATP is made of enzymes and DNA is made
of RNA.
2. ATP is single stranded and DNA is double
stranded.
3. ATP is a stable molecule and DNA is an
unstable molecule.
4. ATP is a nucleotide monomer and DNA is a
nucleic acid polymer.
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
ATP and DNA are different because:
1. ATP is made of enzymes and DNA is made
of RNA.
2. ATP is single stranded and DNA is double
stranded.
3. ATP is a stable molecule and DNA is an
unstable molecule.
4. ATP is a nucleotide monomer and DNA is a
nucleic acid polymer.
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Which part of the DNA nucleotide below is
different from the analogous nucleotide in RNA?
1.
2.
3.
4.
Phosphate
Sugar
Base
Bonding
Figure 3-22
Biology: Life on Earth, 9e
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Which part of the DNA nucleotide below is
different from the analogous nucleotide in RNA?
1.
2.
3.
4.
Phosphate
Sugar
Base
Bonding
Figure 3-22
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.