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Final exam for all Carbohydrate and Nitrogen lectures.
1. Which of the following molecules CANNOT be excreted by the kidneys as glucuronides?
A. Bile (stercobilin)
B. Progesterone
C. Bilirubin diglucuronide
D. Morphine
E. Thyroid hormone
2. Which of the following molecules DOES NOT accumulate in blood as a result of a defect in any of the enzymes of the urea cycle?
A. Any of the intermediates of the urea cycle
B. Ammonia in the form of NH4+
C. Glutamine and alanine
D. All the intermediates of glycolysis
3. Which of the following hormones regulates the excretion of both water and sodium counteracting the effects of other water homeostasis hormones?
A. Aldosterone
B. Antidiuretic hormone
C. Cortisol
D. Estrogen
E. Natriuretic peptides
4. Which of the following digestive enzymes pairs can break peptide bonds at either terminal end of a polypeptide?
A. Trypsin&chymotrypsin
B. Elastase&collagenase
C. Aminopeptidase and carboxypeptidase
D. Dipeptidase&tripeptidase
E. Enterokinase and Phospholipase A
5. Which of the following enzymes pairs can perform autocatalysis once they are activated?
A. Pepsin&trypsin
B. Aminopeptidase&carboxypeptidase
C. Elastase&collagenase
D. Dipeptidase&tripeptidase
E. Chymotrypsin&Phospholipase A
6. Which of the following zymogens can help in the screening of gastric disorders?
A. Trypsinogen
B. Pepsinogen
C. Chymotrypsinogen
D. Procollagenase
E. Procarboxypeptidase
7. Which of the following disorders can affect the release of pancreatic digestive enzymes into the intestinal lumen?
A. Hartnup disease
B. Cystinuria
C. Cystic fibrosis
D. Atrophic gastritis
E. Duodenal ulcer
8. Which of the following mechanisms facilitates the absorption and release of hydrophobic amino acids into the body's cells?
A. Aquaporins
B. Autophagosomes
C. Secondary active transporters
D. Simple diffusion
E. Facilitated diffusion
9. Which of the following statements about the degradation of body's proteins is INCORRECT ?
A. Proteins for degradation are recognized based on the presence of ubiquiting tags, PEST sequences, N-terminal or oxidized residues.
B. A single ubiquitin isopeptide assigns a regulatory function to a protein but multiple ubiquitin isopeptides targets the protein for degradation.
C. E1 binds and transfer an ubiqutin molecule to E2 and E3 joins the ubiquitin from E2 to the end terminal end of a target protein.
D. Lysosomal proteases break down body' proteins into polypeptides; while, proteasome complexes break them into single amino acids.
E. Binding of N-acetylglucosamine to the active sites of the proteasome inhibits protein degradation and the removal of this molecule facilitates protein degradation.
10. Which of the following digestive enzymes pairs can break peptide bonds at either terminal end of a polypeptide?
A. Trypsin&chymotrypsin
B. Elastase&collagenase
C. Aminopeptidase and carboxypeptidase
D. Dipeptidase&tripeptidase
E. Enterokinase and Phospholipase A
11. Which of the following enzymes pairs need to be activated via autocatalysis?
A. Pepsin&lysosomal proteases
B. Aminopeptidase&carboxypeptidase
C. Elastase&collagenase
D. Dipeptidase&tripeptidase
E. Chymotrypsin&Phospholipase A

Questions & Answers

What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
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.
Bharti
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
Daniel
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
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
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
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
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.
Tarell
what is the actual application of fullerenes nowadays?
Damian
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.
Tarell
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.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
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.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit 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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