Question

1. The number of enzymes common to Krebs and glyoxylate cycles is
   1. 3                      b. 4                  c. 5                  d. 6

2. The number of AcCoA units used in one turn of the glyoxylate cycle is
   1. 4                      b. 3                  c. 2                  d. 1

3. The number of oxygens in carbamoyl phosphate is
   1. 3                      b. 4                  c. 5                  d. 6

4. lipoprotein lipase is present in the
   1. intestine                                  c. adipocyte
   2. capillary                                  d. myocyte

5. The number of resonance structures of phosphate are
   1. 3                      b. 4                  c. 5                  d. 6

Answer 1

1)option (C)

Explanation:The glyoxylate cycle utilizes five of the eight enzymes associated with the tricarboxylic acid cycle: citrate synthase, aconitase, succinate dehydrogenase, fumarase, and malate dehydrogenase. The two cycles differ in that in the glyoxylate cycle, isocitrate is converted into glyoxylate and succinate by isocitrate lyase (ICL) instead of into α-ketoglutarate.This bypasses the decarboxylation steps that take place in the citric acid cycle (TCA cycle), allowing simple carbon compounds to be used in the later synthesis of macromolecules, including glucose. Glyoxylate is subsequently combined with acetyl-CoA to produce malate, catalyzed by malate synthase.^[Malate is also formed in parallel from succinate by the action of succinate dehydrogenase and fumarase.

2) option (C)

In one glyoxylate cycle 2 Acetyl coA are used to produce 2 succinate which in turn produce 1 glucose molecule.

3)option (C)

structure of carbamyl phosphate.

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