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Module 1 Exam - Requires Respondus LockDown
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Due No due date Points 100 Questions 30 Time Limit 120 Minutes
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LATEST Attempt 1 41 minutes 97 out of 100
Score for this quiz: 97 out of 100
Submitted Feb 23 at 5:49pm
This attempt took 41 minutes.
Question 1^3 / 3^ pts
True or False: According to the Module, a compound with a molecular
mass of 1,000 g/mol is considered a macromolecule.
True Correct!Correct! False
Question 2^3 / 3^ pts
True or False: Biomolecules can have only one functional group.
True Correct!Correct! False
Question 3^3 / 3^ pts
True or False: The following functional group is an amine.
Correct!Correct! True
False
Question 4^3 / 3^ pts
True or False: In a eukaryotic cell, the organelles called ribosomes serve
the purpose of digesting macromolecules.
True Correct!Correct! False
S
P
Correct!Correct! F
Na
Question 8^3 / 3^ pts
_____________ is a functional group found in carbohydrates.
Esters Thiols Carboxylic acids Correct!Correct! Alcohols
Amines
Question 9^3 / 3^ pts
The following functional group is an example of _________.
Alcohol
Amine Correct!Correct! Ketone
Carboxylic acid Aldehyde
Question 10^3 / 3^ pts
A ___________ is a chemical formula that shows how the atoms of a
molecule are bonded to one another.
Covalent formula Line bond formula Empirical formula Correct!Correct! Kekule’ structure
Condensed formula
Question 11^3 / 3^ pts
In biomolecular structure, if two macromolecules interact it is called a
_______.
Monomer Dimer Macromolecular structure
Question 14^3 / 3^ pts
What energy molecule is produced via respiration?
Correct!Correct! ATP
Creatine DNA RNA mitochondria
Question 15^3 / 3^ pts
What would be the approximate size of a human cell?
a. 0.1 inch
b. 1 nm
c. 10 nm
d. 10 m
e. 10 cm
a. b. c.
Correct!Correct! d.
e.
Question 16^3 / 3^ pts
For pentane, there are________ carbon and ________hydrogen atoms.
Correct!Correct! 5, 12
4, 10 5, 14 10, 20 None of the above
Question 17^3 / 3^ pts
For an organic compound, which structure is the most efficient to draw?
Correct!Correct! Line bond
Condensed Lewis structure Structural formula None of these
Question 20^3 / 3^ pts
The ___________ functional group was NOT discussed in this module.
Alcohol Amine Aromatic Thiol Correct!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?
A. 1
B. 25
C. 250
Correct!Correct! D. 25,
E. Both c and d
Question 22^3 / 3^ pts
Which of the following would most likely have a cell wall?
Monkey cells Snake cells Correct!Correct! Red algae cells
Human red blood cells All of the above
Question 23^3 / 3^ pts
Eukaryotes have molecules that provide a protective structure. This
network, which is found in all eukaryotes, is called the _____________.
Cell wall Correct!Correct! Cytoskeleton
Cytosol Cytoplasm None of the above
Question 24^3 / 3^ pts
What is the molecule responsible for gout?
Luciferin
The fundamental similarity is that each cell type has a plasma
membrane that separates life from 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.
Question 27^5 / 5^ pts
Your Answer:
(Short response) According to the Module, are smaller elements or large
elements favored in biological molecules? Explain which one (smaller or
larger) are preferred and give at least two examples of elements (smaller
or larger) common in the biomolecules.
In biological molecules, smaller elements with smaller atomic shells are
more favored. Because these smaller elements can form covalent bonds,
which are considered "strong bonds", these form by significant overlap of
atoms. The bond between carbon and hydrogen allows them to share
electrons and "remain strong". This bond that forms requres a substantial
amount of energy to break and as such, the bond is able to withstand
stress (eg. thermal stress). This bond strength is imperative for living
organisms, as stable bonds allow for mechanical processes to continue
which help sustain life. Unlike smaller elements, larger elements typically
form less stable covalent bonds or ionic bonds. An example of a larger
element is Iron which has a less stable bonding strength with oxygen.
Smaller elements are preferred. These elements with smaller
atomic shells are favored because they can form stable
covalent bonds. Strong bonds form by significant overlap 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 bonds to
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.
These elements are common: H, C, O, N, P, S, and Cl. (Se is
borderline).
Larger elements tend to form ionic compounds–not covalent.
Question 28^5 / 5^ pts
Your Answer:
(Short response) Describe at least three properties of carbon that permit it
to be the basis of life.
Carbon is the basis of life (here on Earth) due to its ability to create long
carbon-carbon chains, which in turn create polymers. Carbon can have
single, double, or triple bonds with itself and other elements. Additionally,
Carbon can create cyclic ring compounds, another basis of life.
Your Answer:
organisms that biochemists study?
Biochemists study many aspects of living organisms; not only the
communcation within and among organisms, but also the structure and
functional relationships of organisms. Addtionally biochemists also study
the chemical reactions among molecules and organisms.
In the module, biochemists also study the structure and
function of biomolecules and the chemical reactions of
organisms.
Quiz Score: 97 out of 100
