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These are exercise test questions to help build your knowledge of proteins and nucleic acids lectures. This will help expand your knowledge on the topics to maximize learning at a deeper level, build confidence and help you succeed in the course.
  1. Which of these is NOT a biological requirement for maintaining a protein’s 3-D structure?
  1. It must demonstrate both flexibility and stability.
  2. It must have an external surface compatible with its environment.
  3. It must be compatible with the structure of its binding sites.
  4. It must be degradable.
  5. It must resist folding during synthesis.

2. Which of these primary amino acid sequences would LEAST likely be a component of an α-helix?

  • A. thr-pro-gly
  • B. cys-val-tyr
  • C. ser-lys-ala
  • D. phe-phe-phe
  • E. thr-val-met

3. What immunoglobulin is present in the greatest percentage in the circulation and can cross the placenta to impart immunity to the developing fetus?

  • A. IgG
  • B. IgA
  • C. IgM
  • D. IgD
  • E. IgE

4. Which of the following is the main factor that directly regulates glycation of hemoglobin?

  1. The enzyme controlling the Amadori reaction
  2. The concentration of glucose in blood
  3. The specificity of an enzyme cofactor
  4. The role of insulin for moving glucose into the red blood cell
  5. The concentration of glucagon in blood

5. What statement about an enzyme’s active site is LEAST correct?

  1. The active site is the location of the enzyme-substrate complex.
  2. The primary sequence in an active site has functional groups to facilitate the reaction.
  3. Substrate binding to an active site results in a conformation change in the enzyme shape.
  4. Substrate active sites are specific for enzyme classes.
  5. Enzymes are degraded once the reaction is completed after they leave the active site.

6. What product directly forms when glucokinase catalyzes a reaction with glucose?

  1. Glucose 6-phosphate
  2. Galactose
  3. Branched glucose molecules
  4. Pyruvate
  5. Lactate

7. Which protein pair is an example of paralog?

  1. HbA and HbF
  2. CK-BB and CK-MM
  3. HbA1 and HbA2
  4. Myoglobin and hemoglobin
  5. Lactate dehydrogenase and hemoglobin

8. Which of the following structures would LEAST likely be a part of a DNA molecule?

  1. Adenine bonded to guanine as purine bases
  2. Cytosine bonded to uracil as pyrimidine bases
  3. Deoxyribose sugar
  4. 3’ to 5’ phosphodiester bonds between sugar molecules
  5. Thymine bonded to cytosine as pyrimidine bases
9. Which of the following is NOT a component of the 80S ribosome?
A. 60S rRNA subunit
B. 40S rRNA subunit
C. DNA and proteins
D. rRNA and proteins
E. Binding sites for tRNA

For #10-11, match the RNA type to the correct description of the corresponding structure.

  • 10. mRNA
  • 11. tRNA
  • A. Cloverleaf adapter with 3’ adenosine end and an anticodon region
  • B. Double stranded helix with hydrogen between the strands
  • C. Single stranded molecule with a 5’-cap and polyadenosine tail
  • D. Two subunits with secondary structures as a result of extensive base pairing loops
  • 12. Which statements BEST explains the process demonstrated in the figure?
    1. There are two chromosomes that are exchanging portions of DNA.
    2. DNA segments are moving to another location on the same gene.
    3. DNA is undergoing normal synthesis per the genetic code.
    4. Ds-DNA is being synthesized from a viral RNA template for human genome integration.
    5. Large portions of chromosomes are exchanged in the presence of a carcinogen.

Questions & Answers

anyone know any internet site where one can find nanotechnology papers?
Damian Reply
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
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Source:  OpenStax, Biochemistry exercises. OpenStax CNX. Apr 06, 2016 Download for free at https://legacy.cnx.org/content/col11386/1.4
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