CHEM 210 BIOCHEMISTRY FINAL EXAM ()
PORTAGE LEARNING QUESTIONS AND VERIFIED
ANSWERS
T/F: According to the module, a compound with a molecular mass of 1,000 g/mol is considered a
macromolecule. - ANSWER-false
macromolecule >5,000 g/mol
T/F: Biomolecules can have two or more different functional groups. - ANSWER-true
T/F: The following group is an amine.
C2H5NH2 - ANSWER-true
T/F: In a eukaryotic cell, the organelles called peroxisomes serve the purpose of digesting
macromolecules. - ANSWER-false
peroxisomes degrade dangerous/hazardous molecules, lysosomes degrade macromolecules
T/F: In a eukaryotic cell, the organelles called lysosomes serve the purpose of digesting
macromolecules. - ANSWER-true
T/F: Carbon dioxide has a linear molecular shape AND has a bond angle of 109.5 degrees. - ANSWER-
false
linear shape = 180 degrees
Of the following, ___ is not a property of carbon.
Forming ionic bonds
Forming cyclic structures
Forming multiple bonds
Forming bonds with oxygen
Bonding in long chains - ANSWER-Forming ionic bonds
Which of the following is an element not typically found in living organisms?
Br
Ca
H
S
Na - ANSWER-Br
What are the functional groups found in carbohydrates? - ANSWER-carbonyls (C=O)
alcohol/hydroxyls (-OH)
ketones
aldehydes
What is a ketone? - ANSWER-carbonyl group bonded to 2 carbons
, A ___ is a chemical formula that shows how the atoms of a molecule are bonded to one another. -
ANSWER-Kekule' structure
A _____ is a chemical formula that does NOT show the C-H and C-C bonds. - ANSWER-condensed
formula
A collection of two or more macromolecules uniting is called a ___. - ANSWER-supramolecular
complex
An organic compound with this structure, C=C, contains a ___ functional group. - ANSWER-alkene
What element has been called the superglue of the chemical world? - ANSWER-carbon (C)
What molecule is the most important for energy storage in cells? - ANSWER-ATP
What would be the approximate size of a human cell? - ANSWER-12 μm
For pentane, there are ___ carbon and ___ hydrogen atoms. - ANSWER-5; 12
For butane, there are ___ carbon and ___ hydrogen atoms. - ANSWER-4; 10
For an organic compound, which structure is the most efficient to draw? - ANSWER-line bond
When writing an organic functional group, scientists often wrist an "R" as part of the structure. What
does the R indicate? - ANSWER-rest of the molecule
According to the module, the study of carbon compounds is referred to as ___. - ANSWER-organic
chemistry
The ___ functional group was NOT discuss in this module.
alcohol
amine
aromatic
thiol
all of these were discussed - ANSWER-all of these were discussed
Which number would be closest to the approximate number of ribosomes in an E. coli cell?
9
38
400
1,500
26,000 - ANSWER-26,000
Which of the following would most likely have a cell wall?
monkey cells
snake cells
red algae cells
human red blood cells
all of the above - ANSWER-red algae cells
Eukaryotes have molecules that provide a protective structure. This network, which is found in all
eukaryotes, is called the ___. - ANSWER-cytoskeleton
PORTAGE LEARNING QUESTIONS AND VERIFIED
ANSWERS
T/F: According to the module, a compound with a molecular mass of 1,000 g/mol is considered a
macromolecule. - ANSWER-false
macromolecule >5,000 g/mol
T/F: Biomolecules can have two or more different functional groups. - ANSWER-true
T/F: The following group is an amine.
C2H5NH2 - ANSWER-true
T/F: In a eukaryotic cell, the organelles called peroxisomes serve the purpose of digesting
macromolecules. - ANSWER-false
peroxisomes degrade dangerous/hazardous molecules, lysosomes degrade macromolecules
T/F: In a eukaryotic cell, the organelles called lysosomes serve the purpose of digesting
macromolecules. - ANSWER-true
T/F: Carbon dioxide has a linear molecular shape AND has a bond angle of 109.5 degrees. - ANSWER-
false
linear shape = 180 degrees
Of the following, ___ is not a property of carbon.
Forming ionic bonds
Forming cyclic structures
Forming multiple bonds
Forming bonds with oxygen
Bonding in long chains - ANSWER-Forming ionic bonds
Which of the following is an element not typically found in living organisms?
Br
Ca
H
S
Na - ANSWER-Br
What are the functional groups found in carbohydrates? - ANSWER-carbonyls (C=O)
alcohol/hydroxyls (-OH)
ketones
aldehydes
What is a ketone? - ANSWER-carbonyl group bonded to 2 carbons
, A ___ is a chemical formula that shows how the atoms of a molecule are bonded to one another. -
ANSWER-Kekule' structure
A _____ is a chemical formula that does NOT show the C-H and C-C bonds. - ANSWER-condensed
formula
A collection of two or more macromolecules uniting is called a ___. - ANSWER-supramolecular
complex
An organic compound with this structure, C=C, contains a ___ functional group. - ANSWER-alkene
What element has been called the superglue of the chemical world? - ANSWER-carbon (C)
What molecule is the most important for energy storage in cells? - ANSWER-ATP
What would be the approximate size of a human cell? - ANSWER-12 μm
For pentane, there are ___ carbon and ___ hydrogen atoms. - ANSWER-5; 12
For butane, there are ___ carbon and ___ hydrogen atoms. - ANSWER-4; 10
For an organic compound, which structure is the most efficient to draw? - ANSWER-line bond
When writing an organic functional group, scientists often wrist an "R" as part of the structure. What
does the R indicate? - ANSWER-rest of the molecule
According to the module, the study of carbon compounds is referred to as ___. - ANSWER-organic
chemistry
The ___ functional group was NOT discuss in this module.
alcohol
amine
aromatic
thiol
all of these were discussed - ANSWER-all of these were discussed
Which number would be closest to the approximate number of ribosomes in an E. coli cell?
9
38
400
1,500
26,000 - ANSWER-26,000
Which of the following would most likely have a cell wall?
monkey cells
snake cells
red algae cells
human red blood cells
all of the above - ANSWER-red algae cells
Eukaryotes have molecules that provide a protective structure. This network, which is found in all
eukaryotes, is called the ___. - ANSWER-cytoskeleton
