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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

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
Do somebody tell me a best nano engineering book for beginners?
s. Reply
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?
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
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
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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