27. What is the amino acid residue in glycogenin able to form a covalent bond with a glucose residue in the glycogen complexes?
(A) serine
(B) asparagine
(C) tyrosine
(D) glutamine
(E) threonine.

23. In a cytoplasmic and globular protein, where would you most likely find hydrophobic amino acids? (A) On the surface of the protein. (B) In the interior of the protein. (C) Randomly distributed throughout the protein. (D) In the α-helices of a protein. (E) Around metal ions, such as .

24. What effect does a competitive inhibitor have on enzyme kinetics? (A) Decreases and does not change (B) Increases and does not change (C) Decreases both and (D) Does not affect either or . (E) Increases and decreases

25. In Michaelis-Menten kinetics, what assumption is made about the enzyme-substrate complex during the steady-state phase of the reaction? (A) The concentration of the enzyme-substrate complex is constant. (B) The enzyme is saturated with substrate. (C) Product concentration remains constant. (D) The product is formed as soon as the substrate binds to the enzyme. (E) The enzyme binds to substrate irreversibly.

26. Which following statement is correct in human cells? (A) Catabolism is usually an endergonic reaction in human cells. (B) Most metabolisms follow the thermodynamic laws, but few do not follow the first law of thermodynamics because human beings need to eat every day. (C) Anabolism often comes along with ATP generation in human cells. (D) The Complex III in the oxidative phosphorylation is not a proton pump. (E) Cytochrome C is a proton carrier that delivers the proton to Complex IV in oxidative phosphorylation.

28. Which following enzyme can generate 5'-AMP? (A) phosphodiesterase (B) adenylyl kinase (C) phosphorylase (D) protein phosphatase-1 (E) heme oxygenase.

29. Which following one is an essential amino acid for human cells? (A) proline (B) cysteine (C) serine (D) glycine (E) phenylalanine.

30. What type of cells is responsible for heme catabolism in the human liver? (A) Kupffer cells (B) Reticuloendothelial cells (C) Stellate macrophages (D) Hepatic stellate cells (E) Hepatocytes.

31. Which term below describes the RNA synthesis process using the DNA template? (A) Translation (B) Transcription (C) Replication (D) Splicing (E) Elongation

32. Which subunit described below is not a component of E. coli RNA polymerase? (A) α (B) β (C) ω (D) σ (E) ε

33. Which below class of RNA encodes protein? (A) mRNA (B) rRNA (C) tRNA (D) snRNA (E) siRNA