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CHEM 210 Biochemistry Portage Learning Complete Module 1–8 Exams + Final Exam (2025) This comprehensive document includes all verified questions and answers for Modules 1 through 8 as well as the Final Exam for CHEM 210 Biochemistry at Portage Learning. Each module exam covers key biochemical topics such as biomolecules, enzymes, metabolism, and signal transduction. The final exam compiles essential concepts across all modules for complete course mastery. Ideal for students seeking a full set of accurate study materials with a 100% pass guarantee.
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Question 1
3 / 3 pts
True or False: According to the Module, a compound with a molecular mass of 3 ,000 g/mol is
considered a macromolecule.
True
Correct!
False
Question 2
3 / 3 pts
True or False: Biomolecules can have only two functional groups.
True
Correct!
False
Question 3
3 / 3 pts
True or False: The following functional group is an alcohol.
True
Correct!
False
Question 4
3 / 3 pts
Question 8
3 / 3 pts
is a functional group found in carbohydrates.
Esters
Thiols
Carboxylic acids
Correct!
Alcohols
Amines
Question 9
3 / 3 pts
The following functional group is an example of.
Correct!
Ketone
Thiol
Amide
Benzene
Aldehyde
Question 10
0 / 3 pts
A is a chemical formula that does NOT show the C-H and C-C bonds.
You Answered
Covalent formula
Line bond formula
Empirical formula
Kekule’ structure
Correct Answer
Condensed formula
Question 11
3 / 3 pts
A collection of two or more macromolecules uniting is called a.
Correct!
Supramolecular complex
Monomer
Macromolecular structure
Dimer
Kekule’ complex
Question 12
3 / 3 pts
An organic compound with this structure, C=C, contains a functional group.
Alkane
Correct!
Alkene
Alkyne
Alcohol Both
b and d
b.
c.
d.
e.
Question 16
3 / 3 pts
For propane, there carbon and hydrogen atoms.
Correct!
None of the above
Question 17
3 / 3 pts
For an organic compound, which structure is the most efficient to draw?
Correct!
Line bond
Condensed
Lewis structure
Structural formula
None of these
Question 18
3 / 3 pts
When writing an organic functional group, scientists often write an “R” as part of the structure.
What does the R indicate?
A string of carbon atoms
Radon
Routine carbon atom
Correct!
Rest of the molecule
None of the above
Question 19
3 / 3 pts
According to the module, the study of NON-carbon compounds is referred.
Organic chemistry
Correct!
Inorganic chemistry
Biochemistry
Environmental chemistry
None of the above.
Question 20
3 / 3 pts
Which of the following is not a functional group discussed in this module?
Alcohol
Amine
Ketone
Aldehyde
Correct!
All of these were discussed.
Question 21
3 / 3 pts
Which number would be closest to the approximate number of ribosomes in an E. coli cell?
Both Cell wall and Cytoskeleton
Question 24
3 / 3 pts
The molecule linked to the medical condition of gout is.
Correct!
Uric acid
Luciferin
Luciferase
Glucose
Glycine
Question 25
3 / 3 pts
About how many different elements are found in living organisms?
Correct!
Question 26
3 / 5 pts
(Short response) Explain the common similarity in all prokaryotic and eukaryotic cells. Give a
brief explanation of the similarity.
Your Answer:
The common similarity between prokaryotic and eukaryotic cells are they both contain cells, a
cell membrane and ribosomes.
The fundamental similarity is that each cell type has a plasma membrane that separates lifefrom
non-life. The plasma membrane acts as a barrier to most molecules but does have proteins that
permit select molecules to cross via proteins (transporters). The plasma membrane permits the
cell to have a different composition of molecules inside the cell than out and defines a space for
life to occur.
Develop the membrane response further, based on module material.
Question 27
2.5 / 5 pts
(Short response) Would scientists be more likely to find an element such as O in a biomolecule,
or W? Explain which she would more likely find in biological molecule and give specific
physical/chemical properties.
Your Answer:
Scientists would be more likely to find an element of O in a biomolecule because O is a bulk
element while W is a trace element. O is found is most strcutures and functional groups.
She would more likely find O. Smaller elements are preferred. In the case of O, it is found in
water, so it would be highly concentrated. Smaller elements with smaller atomic shells are
favored because they can form stable covalent bonds. Strong bonds form by significantoverlap
of atoms, such as carbon and hydrogen permitting them to share electrons. The bond that
forms requires a substantial amount of energy to break, which allows the bondsto withstand
insults, such as mechanical and thermal stresses. This bond strength is good news for living
organisms. Stable bonds allow cells to form, hair to grow, and skin to protect against abrasion.
Larger elements, such as W, tend to form ionic compounds–not covalent.
Describe why O is using the size/overlap.
Question 28
3.5 / 5 pts
(Short response) What element is the basis for life? Describe at least two properties of this
element that permit it to serve the basis for life.
Your Answer:
Carbon is the element that is the basis for life. Carbon has the ability to form stable covalent
bonds and unique combinations. Carbon has its own branch organic chemistry.
1. Carbon can form strong covalent bonds with a variety of different elements. 2. Besides,
carbon can form double and triple bonds with other carbon atoms and other elements (N and
o). 3. Carbon can form long chains by forming numerous carbon-carbon bonds; we
w
] = 1.0 x 10
][0.0010] = 1.0 x 10
]=1.0 x 10
pH=-log[1.0 x 10
Question 2
3 / 3 pts
Water is a unique molecule. Which of the following contributes to water’s unique place in the
chemical world?
The geometry of the molecule
The polarity of the O-H bonds
The ability of water molecules to hydrogen bond
The bond angle of water
Correct!
All of the answers are correct
Question 3
0 / 3 pts
The bent shape of water is due to.
The dipole arrows in a water molecule
The electronegativity difference between hydrogen and oxygen
You Answered
The unequal electron sharing between hydrogen and oxygen
Correct Answer
The unshared electron pairs on the oxygen atom
None of the answers are correct
Question 4
0 / 3 pts
Which diagrams correctly represent a hydrogen bond?
Correct Answer
A and D
A and C
You Answered
B and C
C and D
B and D
Question 5
0 / 3 pts
The H
concentration of a solution is 1.2 x 10
M. What is the pH?
You Answered
London forces
Hydrogen bonds
Halogen forces
You Answered
Dipole-dipole forces
Covalent bonds
Question 9
3 / 3 pts
Which one of the following molecules can form a hydrogen bond?
A. HBr
B. HCl
3
4
2
Correct!
Question 10
3 / 3 pts
A hydrogen bond can form between a hydrogen atom bonded to oxygen, O–H, and.
Cl
Correct!
Question 11
3 / 3 pts
In a bond between P and Cl, there exists a difference in electronegativity resulting in partial positive
and partial negative charges. If a dipole arrow where added to this structure, which waywould the
arrow point?
The arrow points from Br toward N
Correct!
The arrow points from N toward Br
Two arrows; one pointed in each direction
There would not be a dipole arrow in this case.
None of the above
Question 12
3 / 3 pts
The following reaction occurs in glues purchased from hardware stores. Customers use this
product to glue plastic together.
Epoxy (l) + hardener (l) ⟶ Glue (s) + heat given off
E) All of the above
Correct!
Question 14
3 / 3 pts
Which of the following is the change in entropy of a reaction?
E) None of the above
Correct!
Question 15
3 / 3 pts
Correct!
Question 16
3 / 3 pts
Which buffer system is used by the renal system to maintain pH balance?
Phosphate buffer system
