Exam 1- Quiz (Written) 55 points

Due Jun 22 at 11:59pm

Points 55

Questions 49

Time Limit 75 Minutes
Instructions
Exam 1 - Quiz is 55 points. The course content is Module 1,2,3, 4. The way to be successful in
this quiz is to have studied Modules 1-4 and then attempt it. If you go back looking for answers/
confirmations, you may loose some valuable time. So please keep that in mind.
Please know that you have only one attempt to do the Exam 1. The due date for completion is
Sat, June 19 for 5 bonus points. You can complete by Tues, June 22.
You are expected to write the answers in your own language wherever needed, do not copy paste
as your responses will be cross checked to examine and confirm that it is your genuine work.
Any cut/copy pasted work is marked as 0.
All the best!
Attempt History
LATEST
Attempt
Time
Score
Attempt 1
75 minutes
47 out of 55
Correct answers are hidden.
Score for this quiz: 47 out of 55
Submitted Jun 22 at 9:28pm
This attempt took 75 minutes.
Question 1
1 / 1 pts
s atomic orbital can hold ___2___ electrons.
Question 2
1 / 1 pts
Which of the following is a physical property?
corrosiveness
ability to support combustion

conductivity
Reactivity
Question 3
1 / 1 pts
List two physical or chemical properties of organic compounds that make it different from
inorganic compounds.
Your Answer:
1. physical - melting point: organic compounds have low melting point, inorganic compounds
have high melting point.
2. chemical- flammability: organic compounds are have a higher increase of flammability,
inorganic compounds are typically not flammable
Question 4
1 / 1 pts
Which if these compounds have a double bond?
Propane
Propyne
Propanol

Propene
Question 5
1 / 1 pts
Identify this compound.
Hexanamine

Hexanamide
Hexane
Hexanol
Question 6
1 / 1 pts
How many C, H, O atoms are in structure below (compute hydrogen atoms)
C=4, H=12, O=1
C=5, H=10, O=1
C=1, H=10, O=4

C=4, H=10, O=1
Question 7
1 / 1 pts
Which of these are properties of inorganic compounds?
Mostly form polar bond
Low Melting Point

High Melting Point

Mostly form ionic bond
Question 8
1 / 1 pts
In an atom has no charge and has no mass.
Answer 1:
neutron
Answer 2:
electron
Question 9
1 / 1 pts
Identify the molecule below:
Propanal

Propanol
Propanoic acid
Propanone
Question 10
1 / 1 pts
Which of these is not an element?

H20
02
N2
H2
Question 11
1 / 1 pts
Even though both are made up of glucose, one big difference is Glycogen is more branched
that starch.

True
False
Question 12
1 / 1 pts
Identify the molecule on basis of functional group:
Hexose
Pentose
Ketose

Aldose
Question 13
1 / 1 pts
Molecules such as erythrose and threose, which are stereoisomers but not mirror images, are
referred to as a pair of ________. D- and L-threose are mirror images and are referred to as a
pair of ________.
anomers; enantiomers

diastereomers; enantiomers
anomers; diastereomers
diastereomers; anomers
enantiomers; diastereomers
Question 14
1 / 1 pts
Maltose is made up of:
Fructose, Glucose

Glucose, glucose
Galactose, Glucose
Glucose, mannose
Question 15
1 / 1 pts
The reaction in which a disaccharide is broken down into its component monosaccharides is
enediol formation.
glycoside formation.

hydrolysis.
oxidation.
reduction.
Question 16
1 / 1 pts
Glucose can be classified as a(an)
aldopentose.
ketopentose.

aldohexose.
aldoketose.
ketohexose.
Question 17
1 / 1 pts
Classify the molecule shown according to the location of its carbonyl group and the number of
carbon atoms.
ketotetrose

aldotetrose
aldopentose
ketotriose
aldotriose
Question 18
1 / 1 pts
α-D-glucose and β-D-glucose are

anomers.
a racemic mixture.
polysaccharides.
disaccharides.
enantiomers.
Question 19
1 / 1 pts
The enantiomer of this carbohydrate is

none of these
Question 20
1 / 1 pts
Which of the following carbons in the molecule shown is a chiral carbon?
carbons 2, 3, and 4
All carbons are chiral.
carbons 1 and 5

carbons 3 and 4
Question 21
1 / 1 pts
Please select the number of carbons, double bonds in the fatty acid shown below:
C-18, Double bonds 4
C-16, Double bonds 3
C-16, Double bonds 4

C-18, Double bonds 3
Question 22
1 / 1 pts
What are the two essential fatty acids that human cannot synthesize?
Your Answer:
Omega 3
Omega 6
Question 23
1 / 1 pts
Lipidic conjugated dienes serve as pigments in flowers and fruits and give bird feathers their
striking colors.

True
False
Question 24
1 / 1 pts
The molecule shown can be classified as a(an)
sphingolipid.

glycerophospholipid.
wax.
eicosanoid.
steroid.
Question 25
1 / 1 pts
Triglycerides belong to which general class of organic molecules?
Amines
alcohols

esters
Amides
Alkanes
Question 26
1 / 1 pts
Biomolecules classified as lipids are
polymers of amino acids.
polymers of diacids and diamines.
polyhydroxy aldehydes or ketones, or compounds which produce those when hydrolyzed.
always a six-membered rings with delocalized electrons.

soluble in non-polar solvents.
Question 27
1 / 1 pts
State True or False
Non-polar compounds are symmetric in structure and are insoluble in water.

False
True
Question 28
1 / 1 pts
Which molecule is a saturated fatty acid?

CH3(CH2)14COOH
CH3(CH2)7CH=CH(CH2)7COOH
none of the above
CH3CH=CHCH2COOH
CH2=CH(CH2)3COOH
Question 29
1 / 1 pts
Which molecule is a fatty acid?
none of the above
CH2=CHCOOH
CH3(CH2)7CH=CH(CH2)7COOH

(CH3)2CH(CH2)3COOH
CH3COOH
IncorrectQuestion 30
0 / 1 pts
Which of these is not a major kinds of cell membrane lipids in animals?

Cholesterol
Phospholipids
Sphingomyelin
Glycolipids
Question 31
1 / 1 pts
What are the repeating units in nucleic acids?
nucleosides
nitrogen bases

nucleotides
amino acids
monosaccharides
Question 32
1 / 1 pts
The number of hydrogen bonds between adenine and thymine in DNA is
0.
3.
1.
4.

2.
Question 33
1 / 1 pts
DNA is primarily located in what part of the cell?
mitochondrion
cytoplasm

nucleus
cell membrane
ribosome
IncorrectQuestion 34
0 / 1 pts
A nucleotide is composed of a ________ with a ________ added to it.
nucleoside; nitrogen base

nucleobase; phosphate group and sugar
pentose; phosphate group
phosphate group; nitrogen base
pentose; nitrogen base
IncorrectQuestion 35
0 / 1 pts
Which of these is 'not' a type of radiotherapy?
Internal Beam Radiation

Neutron Beam Therapy
External Beam Radiation
Proton Beam Therapy
Question 36
1 / 1 pts
Which monosaccharide listed is used in the backbone of DNA?
mannose
ribose
glucose

deoxyribose
fructose
Question 37
1 / 1 pts
The type of nucleic acid that carries the information for protein synthesis from the nucleus to
the cytoplasm is
rRNA.
RNA.
tRNA.
DNA.

mRNA.
IncorrectQuestion 38
0 / 1 pts
The chemical combination of ribose and one of the five nitrogen bases and phosphate group
results in formation of a
DNA molecule.

nucleoside.
gene.
chromosome.
nucleotide.
Question 39
1 / 1 pts
The bonding forces between the two DNA strands in a double helix are
polar bonds.

hydrogen bonds.
peptide linkages.
phosphate bonds.
ester bonds.
Question 40
2 / 2 pts
List two physical or chemical properties of organic compounds that make it different from
inorganic compounds.
Your Answer:
physical- solubility: inorganic compounds have are highly soluble in water
chemical - toxicity : inorganic compounds have an increased toxicity levels
Question 41
1.5 / 2 pts
Compare A and B by identifying them and stating what organic compounds they are.
Your Answer:
A: hydrocarbon - aldehydes
B: hydrocarbon - Ketone
Question 42
2 / 2 pts
1. What is the chiral center?
2. Which one of this is chiral?
3. Why is the one you chose chiral and the other one is not?
Your Answer:
A is chiral center
chiral center means that carbon is attached to 4 different atoms
B. carbon is attached to two of the same atoms
UnansweredQuestion 43
0 / 2 pts
Why is commonly used house hold sugar an organic compound but salt is inorganic
compound?
Your Answer:
Salt does not contain both carbon and hydrogen
Sugar contains both carbon and hydrogen
UnansweredQuestion 44
0 / 2 pts
For the given fatty acid molecule , write the nomenclature with carbon, double bonds and
positions for Linoleic acid. Also highlight what type of w(omega) acid it is?
Your Answer:
Question 45
1.5 / 2 pts
Is this statement correct, if your response is 'Yes' mention that, if your answer is 'No', how can
you correct this statement?
Translation takes place in ribosomes inside the nucleus.
Your Answer:
no, translation takes place outside the nucleus in the cytoplasm
Question 46
2 / 2 pts
What are medical x-rays? What are dental x-rays?
Your Answer:
dental xrays= xrays of teeth
medical xrays= xrays of bones in body
Question 47
2 / 2 pts
Is there any difference between A-T and G-C pairs? Justify your response.
Your Answer:
A binds with T 2 hydrogen bonds, G binds with C has 3 hydrogen bonds
Question 48
0 / 0 pts
Have you completed your Oral exam (20 points)? Appointment info in annoucement.
If yes, when did you complete?
If no, when are you planning to take? (Have you scheduled at a certain time or not?)
Your Answer:
no saturday
Question 49
1 / 0 pts
Do you have any feedback to share at this time? (Bonus)
Your Answer:
no feedback