Back to quiz

6. Which enzyme converts pyruvate to lactate under anaerobic conditions?

  • Pyruvate kinase
  • Lactate dehydrogenase
  • Lactokinase
  • Lactase

7. Which of the following is NOT true of Complex I?

  • 4 potons pumped into intermembrane space
  • Transfer of electrons from NADH to Ubiquinone occurs here
  • The ubiquinol formed then diffuses to Complex II
  • Contains 6 Iron-sulphur centres and flavin mononucletide

8. Which of the following is true of Leigh syndrome?

  • Causes by too much ATP being produced
  • Results in lesions in the hypothalamus and the midbrain
  • It is an early onset fatal disorder
  • Mutations found in complex II

9. Which of the following is NOT true of Fructose-2,-6-bispohosphate?

  • Its production is catalysed by PFK-2
  • it is phosphorylated it slows down glycolysis
  • Regulates pyruvate kinase
  • Regulates phosphofructokinase-1

10. Which of the following is NOT true of Hexokinase?

  • Type IV found in hepatocytes and buffers glucose levels
  • There are large differences in the enzyme kinetics
  • Begins in a closed configuration, and opens when glucose binds
  • There are 4 types

11. Which of the following is NOT true of the nucleus?

  • 10-20 micrometers in diameter
  • Located near the apical membrane
  • Makes up 10% of the cell body
  • Attached to the endoplasmic reticulum

12. What is Chromatin?

  • Tightly packaged DNA around nucleosomes
  • Loosely packaged DNA of non-dividing cells around histones
  • Irregularly shaped region packages all prokaryotic DNA
  • Alkaline protein that packages and orders the DNA

13. Which enzyme is used to convert Dihydroxyacetone phosphate to Glyceraldehyde-3-phosphate?

  • Phosphoglycerate kinase
  • Triose phosphate isomerase
  • Glyceraldehyde-3-phosphate dehydrogenase
  • Phosphoglycaromutase

14. Which of the following is NOT a building block of the Nuclear Pore Complex?

  • Ring subunit
  • Archal subunit
  • Lumenal Subunit
  • Annular subunit

15. Which of the following is NOT an electron carrier in oxidative phosphorylation?

  • Iron-sulphur proteins
  • NADP and FADP
  • Cytochromes
  • Ubiquinone

16. Which of the following glycolysis reactions involves adding a phosphate?

  • 2-phosphoglycerate to Phosphoenolpyruvate
  • 1,3-Bisphosphoglycerate to 3-phosphoglycerate
  • Glyceraldehyde-3-phosphate to 1,3-Bisphosphoglycerate
  • Dihydroxyacetone phosphate to Glyceraldehyde-3-phosphate

17. Which of the following is NOT true of Sodium fluoroacelate?

  • Forms fluorocitric acid which inhibits the krebs cycle
  • Used as a Acaricide
  • There is no antidote
  • Causes an acculumation of citric acid

18. Which of the following occurs at Complex IV?

  • Oxygen is formed, proton gradient diminishes
  • Oxygen is formed, proton gradient is amplified
  • Water is formed, proton gradient is amplified
  • Water is formed, proton gradient diminishes

19. Which of the following enzymes does NOT allow for regulation in glycolysis?

  • Phosphoglycerate kinase
  • Hexokinase
  • Phosphofructokinase-1
  • Pyruvate kinase

20. What is the cristae?

  • A fold in the inner membrane of an organism
  • Folds of the outer membrane of mitochondria
  • Folds of the inner membrane of mitochondria
  • Fluid-filled space between membranes of mitochondria