In the name of ALLAH, the most beneficient, the most merciful

Biochemistry II (BIO303)

Multiple Choice Questions (MCQs)

Objective Questions

  1. Iron sulpher center is present in ________.

    1. Aconitase
    2. Acetyle coA
    3. Isocitrate
    4. Fumerate
  2. Which of the following is not used by Pyruvate dehydrogenase Complex as a co-enzyme?

    1. TPP
    2. FAD
    3. Lipoate
    4. GTP
  3. A conjugate base in the buffer is a ________.

    1. Proton acceptor
    2. Proton donor
    3. Weak base
    4. Weak acid
  4. The yeast PDH complex has a ________ lipoyl domain with a lipoate attached.

    1. 1
    2. 3
    3. 5
    4. 8
  5. The nearly tetrahedral arrangement of the orbitals about the oxygen atom allows each water molecule to form hydrogen bonds with as many as ________ neighboring water molecules.

    1. 1
    2. 2
    3. 3
    4. 4
  6. In the 2nd stage of Citric acid cycle, ________ is oxidized.

    1. Fatty acids
    2. Amino acids
    3. Acetyl-co A
    4. Pyruvate
  7. Which of the following is not the component Pyruvate dehydrogenase complex (PDH complex)?

    1. E1
    2. E2
    3. E3
    4. E4
  8. Citric acid cycle is a series of chemical reactions used by all aerobic organisms to generate energy through the ________ of acetyl CoA derived from carbohydrates.

    1. Reduction
    2. Oxidation
    3. Redox reaction
    4. Hydrolysis
  9. The transfer of electrons from NADH to oxygen generates how many molecules of ATP per pair of electrons?

    1. 1.5
    2. 2.5
    3. 3.5
    4. 4.5
  10. There is ________ between the oxygen atom of one water molecule and the hydrogen of another.

    1. Hydrogen Bonding
    2. Van der waal force
    3. Ionic bond
    4. Electrostatic attraction