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Biochemistry

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Carbohydrates

Question
38 out of 40
 

All take place in mitochondria except(AIIMS May 2007)



A Electron transport

B Urea cycle

C EMP pathway

D Krebs’ cycle

Ans. C EMP pathway

Since compartmentalization of various pathways is a frequently asked topic, you need to have the following points in your finger tips:

Cytoplasm:

- Glycolysis or Embden - Meyerhof pathway or EMP pathway

- Glycogenolysis

Glycogen synthesis

HMP shunt

- Fatty acid synthesis

Mitochondria:

a. TCA cycle or Kreb's cycle

b. Electron transport

c. Oxidation of small and medium chain fatty acids

d. Ketone body production - Amino acid oxidation

Peroxisomes:

a. Oxidation of very long chain fatty acid

b. Ether lipid synthesis

c. Bile acid synthesis

d. Involvement of two compartments:

a. Gluconeogenesis:

b. Urea Synthasis

c. Deme Synthesis

Pyruvate carboxylase is a mitochondrial enzyme forming oxaloacetate occure in Mifochordia

Further steps occur in cytoplasm

- Urea cycle

a. CPS I or carbamoyl phosphate synthase I and Ornithine transcarbamoylase are mitochondrial enzymes

b. Further steps occur in cytoplasm

- Cholesterol synthesis

a. Till lanosterol synthesis, it Occurs in cytoplasm

b. Later in smooth endoplasmic reticulum.

Thus, for the above question, EMP or glycolysis alone Occurs in cytoplasm.

Carbohydrates Flashcard List

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