The Citric acid cycle occurs in the mitochondria. There are nine biochemical reactions involved in the Citric acid cycle, and they are highly ordered. Select the correct order. (Note: These are abbreviated and do not show NAD, ADP, ATP, or FAD.)
A. acetyl-CoA joins the Citric acid cycle and unites with oxaloacetate ?forming citrate ?which forms alpha-ketoglutarate ? which forms succinyl-CoA ? which forms succinate ? which forms fumarate ? which forms malate ? which forms oxaloacetate
B. acetyl-CoA joins the Citric acid cycle and unites with oxaloacetate ?forming citrate ?which forms alpha-ketoglutarate ? which forms succinyl-CoA ? which forms succinate ? which forms malate ? which forms fumarate ? which forms oxaloacetate
C. acetyl-CoA joins the Citric acid cycle and unites with oxaloacetate ?which forms alpha-ketoglutarate ? forming citrate ? which forms succinyl-CoA ? which forms succinate ? which forms fumarate ? which forms malate ? which forms oxaloacetate
D. acetyl-CoA joins the Citric acid cycle and unites with oxaloacetate ?forming citrate ?which forms beta-ketoglutarate ? which forms succinyl-CoA ? which forms succinate ? which forms fumarate ? which forms malate ? which forms oxaloacetate
Answer: A
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Parathyroid hormone's main function is to
A. increase glucose mobilization during stress or fasting. B. increase calcium by mobilizing the ion from bone. C. increase sodium through reabsorption from kidney. D. increase insulin-like growth factor I and linear body growth. E. synergize with thyroid hormone in various functions.
Which of the following are characteristics of cyclins?
a. They are active only when combined with another cyclin molecule. b. The levels of cyclins remain constant throughout the cell cycle. c. The levels of cyclins fluctuate throughout the cell cycle. d. Cyclins add phosphate groups to target proteins. e. Cyclins remove phosphate groups from target proteins.
Which of the following DNA regions is recognized by RNA polymerase during transcription?
A) promoter B) operator C) attenuator D) leader E) structural gene
A cell that contains a nucleus is called a(n) (prokaryotic/archaeal/eukaryotic) cell.
Fill in the blank(s) with the appropriate word(s).