Carbohydrates 4 Flashcards Preview

Science for Medicine > Carbohydrates 4 > Flashcards

Flashcards in Carbohydrates 4 Deck (9)
Loading flashcards...
1
Q

Where does gluconeogenesis usually occur?

A

In the liver.

2
Q

What is the first step of gluconeogenesis?

A

Pyruvate -> Pyruvate (inside mitochondria) -> oxaloacetate -> malate -> malate (outside mitochondria) -> oxaloacetate -> PEP

OR

Lactate -> Pyruvate -> Pyruvate (inside mitochondria) -> oxaloacetate -> PEP -> PEP (outside mitochondria)

3
Q

What is the second step of gluconeogenesis?

A

Fructose 1,6 bisphosphate -> Fructose 6 phosphate

Fructose 1,6 bisphosphatase

4
Q

What is the third step of gluconeogenesis?

A

Glucose-6-phosphate -> Glucose

Glucose-6-phosphatase

5
Q

Where do steps 2 and 3 occur?

A

Cytoplasm

6
Q

Where is free glucose made?

A

Endoplasmic reticulum.

7
Q

Describe the fructose-1-phosphate pathway.

A

Fructose -> Fructose-1-phosphate -> Glyceraldehyde (+ dihydroxyacetone phosphate) -> Glyceraldehyde 3-phosphate

8
Q

Describe the pentose phosphate pathway.

A

G-6-P -> 6-phosphogluconate -> Ribulose-5-phosphate -> Ribose-5-phosphate -> Nucleotides

9
Q

What is NADP+?

A

An electron carrier.