Question

identify the following statement True or False

1) Respiratory quotient (RQ) is the ratio of CO₂ produced per mole of O₂ consumed in the metabolism of a substrate. If a substrate A has a lower RQ than substrate B, catabolism of A uses less oxygen per carbon oxidized than does catabolism of B.

T/F

2)The breakdown of the fatty acid CH3CH2CH2CH2CH2CH2CH2CH2COOH via the β-oxidation pathway would yield three moles acetyl units and one mole propionyl unit.

3)In the oxidation of fatty acids, transportation of activated fatty acids into mitochondria requires the reaction with carnitine.

4)The synthesis of fatty acids is a reductive process. NADH provides the reducing equivalent for fat production.

5)The eukaryotic fatty acid synthase complex contains enzymes needed for the synthesis of palmitate.

6)The release of sn-diacylglycerol and inositol 1,4,5-triphosphate from phosphatidylinositol 4,5-bisphosphate is catalyzed by phospholipase A.

Answer 1

1. True

2. False

3. True

4. True

If a substrate produces less RQ or respiratory quotiant, it means that it uses less oxygen to oxidize the carbons

Beta oxidation will be continued till than all the bonds are broken down to produce acetyl co A molecules . Hence it will not stop in propionyl unit

The fatty acid itslef cannot be moved into mitochondria alone and it reacts with carnitine to be taken into mitochondria

Fatty acid synthesis requires NAPH reduction