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11. Which enzyme produces ammonium ions for the urea cycle?
A. Oxidase
B. Transaminase
C. Aminotransferase
D. Lactate dehydrogenase
E. Glutamate dehydrogenase

Match the term on the left with its biochemical function:

A. Process breaks down protein in the lysosomes as result of nutritional imbalances
B. Process breaks down organelles and proteins into single amino acids
C. Recognizes proteins with ubiquitin tails and feeds them into the 20S proteasome
D. Facilitates the entrance of non-ubiquitinidated proteins inside the 20S proteasome
E. Shreds any size proteins into small peptides

12. ____20S Proteasome
13. ____Macroautophagy
14. ____Chaperone-Mediated autophagy
15. ____19S regulatory cap
16. ____11S regulatory cap
17. Which of the following statements explains the concept of high protein, low carbohydrate diets?
A. Increased in insulin levels induce both glycolysis and glycogenesis.
B. Increased in glucagon levels stimulate lipolysis and b-oxidation of fats.
C. Increased in cortisol levels activate glycogenolysis in muscle.
D. Decreased in epinephrine levels enhance the rate of gluconeogenesis.
E. Decreased in insulin levels open GLUT4 transporters in muscle.
18. A 40-year old woman suffers hematuria and consistent back pain on the left side. A 24-hour urine sample was collected. Urine pH was acidic. Urine was positive for basic amino acids and had high levels of cystine. Microscopic urine examination showed the presence of translucent hexagonal crystals. Which of the following disorders is consistent with these lab results?
A. Hartnup disease
B. Cystinuria
C. Pancreatitis
D. Emphysema
E. Cystic fibrosis
19. Which of the following high protein food products can be helpful in both weight loss and providing essential amino acids to the body?
A. Almonds
B. Cashews
C. Eggs
D. Peanuts
E. Red kidney beans

A 21 year old 5' 5" tall female weighs 105 lbs. Her body mass index ( BMI ) is 17.5 and percent body fat is 10%. A normal BMI for her height and weight is 18.5 - 25. A healthy % body fat is 21% to 33%. She has not had her menstrual period for the past four months. Her complaints are being fatigued, irritable and unable to concentrate. She constantly feels cold even in hot weather. She has a cough and is unable to get better.

Use this clinical case to answer questions 20 to 25.

20. She has an intense fear of becoming fat. She does 2 hours of high intensity exercise and a reduced calorie diet to stay thin. This patient consumes two slices of a Pizza Hut Medium Thin'N Crispy Pizza Cheese daily. Each slice of pizza has 230 calories per slice. A normal female, 18 to 35 years old, who neither leads a sedentary lifestyle, neither is overly active, should consume about 1760 calories daily. She feels a great sense of achievement by keeping herself trim and sees nothing wrong with consuming very small amount of calories in addition to her daily exercise workouts.In which nitrogen state is this patient right now?
A. Positive
B. Negative
C. Balanced
D. Intrinsic
E. Extrinsic
21. She enjoys drinking daily. Her drinking schedule consists of five to six 12-ounces of beer for happy hour (Monday through Thursday). On the weekends, her alcohol consumption begins after 10 PM and continues until 2 AM. Her favorite drinks are: beers, malt liquor, vodka and tequila shots. She drinks in excess until she is in a drunken stupor or passes out.Which hepatic system will process the excess ethanol molecules in this patient?
A. Alcohol dehydrogenase
B. Lactate dehydrogenase
C. Malate dehydrogenase
D. Pyruvate decarboxylase
E. Ubiquitin-proteasome
22. Which of the following molecules will cause dehydration and loss of electrolytes in this patient?
A. VLDL particles
B. Glycerol
C. Lactic acid
D. Ketone Bodies
E. Acetaldehyde
23. Which of the following by-products of alcohol metabolism is the main source of fuel for the cells as a result of excess alcohol consumption in this patient?
B. Ketone bodies
C. Lactate
D. Acetate
E. Acetaldehyde
24. Which of the following IS NOT an effect associated with the metabolism of excess ethanol?
A. Hyperlipidemia
B. Metabolic acidosis
C. Dehydration
D. Overhydration
E. Loss of electrolytes
25. Which hepatic system synthesis will be induced as a result of daily excess ethanol consumption in this patient?
A. Alcohol dehydrogenase
B. Microsomal ethanol oxidizing
C. Ubiquitin-Proteasome
D. Lysosomal Proteases
E. Glucuronidation

Questions & Answers

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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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