4. Michaelis and Menten assumed that the overall reaction for an enzyme-catalyzed reaction could be expressed as:

Based on above reaction, the rate of breakdown of the enzyme-substrate complex can be described by the expression:
(A) k₁([E_t]-[ES])
(B) k₁([E_t]-[ES])[S]
(C)k₂[ES]
(D) k_-1[ES]+k₂[ES]
(E)k_-1[ES]

30. What is the primary message conveyed in the passage about the resilience of high-rise buildings in the face of natural disasters? (A) The resilience of high-rise buildings is primarily determined by their adherence to strict seismic building codes. (B) Ongoing research and physical testing are crucial for improving the resilience of high-rise buildings worldwide. (C) Advancing engineering techniques, such as the use of tuned mass dampers, is key to building resilient high-rise structures. (D) Reinforced concrete construction is the most effective approach for ensuring the resilience of high-rise buildings.

1. Please determine the more stable anion in each of the following cases: (i), (ii), and (iii). (A) a, c, f (B) a, d, f (C) b, d, f (D) b, d, e (E) a, c, e

2. When a solution of 0.1 M Na2CO3/0.1 M NaHCO3 (H2CO3: Ka1 = 4.2 x I0-7 and Ka2 = 4.69 x I0-11) is titrated with 0.1 M HCl. Which one is the titration curve?(A)(B)(C)(D)(E)

3.The relative initial rates of the reaction X2 + Y2 →products in vessels (a)-(d) follow a ratio of 1:8:2:16. Unshaded spheres depict X2 molecules, while shaded spheres represent the presence ofY2? molecules at the start of the reaction. What is the overall order of reaction? (A)l (B)2 (C)3 (D)4 (E)5

5. Which one is not an input transducer? (A) Mass analyzer (B) Glass-calomel electrode (C) Electron multiplier (D) Photomultiplier tube (E) Photodiode

6. Please identify the meso compound(s) in the given chemical structures (I), (II) and (III). (A) I only (B) II only (C) III only (D) I and III only (E) I, II, and III

7. What is the volume of a cube (V=L3) with the side length of 2.0 ± 0.2 cm? (A) 8.0 ± 0.008 cm3 (B) 8.0 ± 0.2 cm3 (C) 8.0 ±0.6 cm3 (D) 8.0 ± 1.4 cm3 (E) 8.0 ± 2.4 cm3

8. Please write the IUPAC name for the compound presented below. (A) 2-propy 1-3-methylbutane (B) 4-isopropylpentane (C) 2-isopropylpentane (D) 5,6-dimethylhexane (E) 2,3-dimethylhexane

9. Write the names for P4Se3 and K₂[PtCl4]. (A) Phosphorous selenide and potassium chloroplatinate (B) Tetraphosphorous triselenide and dipotassium monotetrachloroplatinate (C) Phosphorous selenide and potassium chloroplatinate(II) (D) Tetraphosphorous triselenide and potassium tetrachloroplatinate(II) (E) Phosphorous selenide and dipotassium tetrachloroplatinate

10. In the following energy diagram illustrating the progression of a reaction, please identify the location(s) indicating the presence of an intermediate? (A) Only I, III, and V (B) Only II and IV (C) Only I (D) Only IV (E) I, II, III, IV, and V