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Chem 210 Module 1 Exam, Exams of Biochemistry

Portage Learning Pre-requisite Chemistry 210 Module 1 Exam

Typology: Exams

2022/2023

Available from 08/21/2023

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Module 1 Exam - Requires Respondus LockDown
Browser + Webcam
Due No due date Points 100 Questions 30 Time Limit 120 Minutes
Requires Respondus LockDown Browser
Attempt History
Attempt Time Score
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.
3 / 3 pts
Question 1
True or False: According to the Module, a compound with a molecular
mass of 1,000 g/mol is considered a macromolecule.
True
False
Correct!
Correct!
3 / 3 pts
Question 2
True or False: Biomolecules can have only one functional group.
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Download Chem 210 Module 1 Exam and more Exams Biochemistry in PDF only on Docsity!

Module 1 Exam - Requires Respondus LockDown

Browser + Webcam

Due No due date Points 100 Questions 30 Time Limit 120 Minutes

Requires Respondus LockDown Browser

Attempt History

Attempt Time Score

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