B03 - Organic Chemestry at Medizinische Universität Wien

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Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

How is a glycosidic bound produced? 

Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

On what does the fluidity of a membrane depend on? 

Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

What is a catayltical triad? 

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Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

Name some special characteristica of Microtubuli

Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

What tells the Michaelis-Menten equation & the Michaelis constant? 

Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

Explain "Competitive Inhibition"

Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

How is a Hemiketal made? 

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Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

Fructose forms both: Pyranose- and Furanoserings. When does which form dominate? 

Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

Whats the difference between Fructose and Glucose? 

Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

How is a hemiacetal made? 

Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

Name the most important Disaccharides and their components! 

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Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

What are isomeres? 

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Exemplary flashcards for B03 - Organic Chemestry at the Medizinische Universität Wien on StudySmarter:

B03 - Organic Chemestry

How is a glycosidic bound produced? 

Dehydration between C1 and C4 

B03 - Organic Chemestry

On what does the fluidity of a membrane depend on? 

  • temperature 
  • lipid composition



  • CAVE: amount of cholesterol enhances the permeability barrier function but NOT does not make the membranes less fluid! 

B03 - Organic Chemestry

What is a catayltical triad? 

A set of 3 coordinated amino acids that can be found in the active site of some enzymes (commonly in hydrolase & transferase) 

B03 - Organic Chemestry

Name some special characteristica of Microtubuli

  • composed of alpha- & beta-Tubulin (7nm)
  • hollow tube of 13 filaments; 
  • binding nucleotides: GTP / GDP 
  • Motor proteins: Kinesin (+) & Dynein (-) 
  • stable structures (flagella, axons, ...), highly dynamic structures (mitotic spindle) & transportation; 

B03 - Organic Chemestry

What tells the Michaelis-Menten equation & the Michaelis constant? 

  • Equation:  beschreibt die Geschwindigkeit einer enzymatischen Katalyse; v0 = Vmax*[S] / Km+[S] 

  • Konstante: Km gibt die Substratkonzentration an, bei der die halbe Maximalgeschwindigkeit eines Enzyms erreicht ist (d.h. genau die Hälfte der Enzyme sind in einem Enzym-Substrat-Komplex gebunden). Cave: Je kleiner die Michaeliskonstante Km ist, desto stärker nimmt die Reaktionsgeschwindigkeit mit der Substratkonzentration zu.

B03 - Organic Chemestry

Explain "Competitive Inhibition"

  • Competitive Inhibitor competes with the substrate for the active site of an enzyme;

  • can be relieved by increasing the substrate concentration (negative feedback regulation) --> reversibel inhibition!

  • Examples: Sulfonamids, Methotrexate 

B03 - Organic Chemestry

How is a Hemiketal made? 

Ketone + Alcohol --> Hemiketal 


B03 - Organic Chemestry

Fructose forms both: Pyranose- and Furanoserings. When does which form dominate? 

  • Pyranose dominates when fructose in free solution 
  • Furanose dominates in many fructose derivatives 

B03 - Organic Chemestry

Whats the difference between Fructose and Glucose? 

Glucose = Aldose 

Fructose = Ketose 

B03 - Organic Chemestry

How is a hemiacetal made? 

Aldehyde + Alkohol --> Hemiacetal 

B03 - Organic Chemestry

Name the most important Disaccharides and their components! 

  • Maltose (Glucose + Glucose) 
  • Lactose (Glucose + Galactose) 
  • Sucrose (Glucose + Fructose) 

B03 - Organic Chemestry

What are isomeres? 

E.g. Glucose, Galactose & Mannose have the same formula (C6H12O6) but they differ in the arrangement of groups around the carbon atoms; 

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