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Revision Question On PLB101

Answer the following questions correctly then you are ready for PLB101
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materials during meiotic cell division is called____
(A)Synapse      (B)Chiasma      (C)Crossing over    (D)Transcription


2. Which of the following is odd one out?
(A)Fructose + glucose = sucrose     (B) Fructose + fructose = maltose    (C) Glucose + galactose = lactose   (D) Glucose + glucose = maltose


3. Lysosome is also known as ___ box
(A)Protective       (B)Suicidal      (C) Adaptive         (D) None of the above


4. Which of the following is not a protein?
(A)Keratin          (B)Haemoglobin          (C)Stearin         (D)Myoglobin           

5. The final product of the Calvin cycle is ______
(A)RUDP       (B)PGA         (C)ATP        (D) PGAL


6. The light reaction stage of photosynthesis takes place in the membranes of small sacs called____
(A) Chloroplast  (B)grana          (C)thylakoids          (D)photosystems


7.Colours of light most useful in photosynthesis are ______
(A)green, yellow and orange     (B)red, violet and blue    (C)infrared, red and yellow   (D)red, white and blue


8. During what stage of photosynthesis is O2 produced?
(A) Cyclic photophosphorylation      (B) the light-dependent reactions involving photosystems i and ii    (C) carbon fixation       (D) O2 is not produced during photosynthesis


9.The pigment molecules responsible for photosynthesis are located in the _____
(A) Cytoplasm of the cell     (B)stroma of the chloroplast    (C) Thylakoid membrane of the chloroplast       (D) all of the above


10. Both carotenoids and chlorophylls ______
(A) Are pigments      (B) absorb photons of all energy ranges    (C) all of the above   (D) none of the above


11. Which of the following is the correct sequence for the movement of electrons during the light-dependent reactions of plant?
(A)P680  à P700  à H2O à NaDP+  (B)H2O àP700  à NaDP+ à P680           (C)P680  à H2O à P700  à NaDP+            (D)H2O à P680  à P700  à NaDP+


12. Which of the following must pyruvic acid be converted into before the Krebs cycle can proceed?
(A)NADH     (B) glucose (C) citric acid       (D) acetyl-coA


13. Which of the following occurs in lactic acid fermentation?
(A)oxygen is consumed  (B)lactic acid is converted into pyruvic acid  (C)NAD+  is regenerated for use in glycolysis   (D)electrons pass through the electron transport chain 


14. Which of the following is not a product of Krebs cycle?
(A) CO2          (B) ATP        (C) FADH2     (D) ethyl alcohol


15.   5 carbon compound  ----> 4 carbon compound + NADH + H+ + ATP
This reaction occurs during which of the following processes?
(A)Krebs cycle   (B) acetyl-coA formation     (C) alcoholic fermentation        (D) lactic acid fermentation


16. Glucose→ glycolysis(i)→  pyruvic acid(ii)→acetyl-coA(iii)→Krebs cycle(iv).
At which of the points is ATP, the main energy currency of the cell, produced?
(A)i only   (B)ii only  (C) i and iv   (D)i,ii,iii and iv


17. During what stage of photosynthesis are ATP and NADPH converted to ADP + Pi and NADP+?
(A) Light-dependent reactions (B) light-independent reactions   (C) both of the above   (D) none of the above


18.H2O vapour exits and CO2 enters a leaf through the _____
(A) Stromata                 (B) stomata              (C)grana                (D)leaf


19. What energy-rich organic compound is produced as a result of the Calvin cycle?
(A)ATP                 (B) H2O            (C) NADPH                (D) C6H12O6


20. High energy photons _______
(A) Long wavelength       (B) have short wavelength       (C) cannot be absorbed        (D) none of the above


#Dr. Sambaz cares.
[2/25, 11:28 AM] ‪+234 903 493 3924‬: 51. Which of the following occurs during the light –dependent reactions of plants?
(A) Electron transport           (B) chemiosmosis              (C) photolysis            (D) all of the above


52. The O2 released during photosynthesis came from ______ molecules
(A) Chlorophyll                (B) H2O                 (C) CO2                           (D) glucose


53. How many carbon atoms are in a molecule of RUDP?
(A) Zero                        (B) two                         (C) three                       (D) five


54. Which of the following statements about photosynthesis is true?
(A)the light-dependent reactions occur only in the light, the light-independent reactions occur only in the dark             (B)photorespiration is more efficient at producing glucose than in photosynthesis              (C)the light-dependent reactions produce the energy rich compounds that are used to run the light-independent reactions                    (D)all of the above


55. Production of one molecule of 3-PGAL requires how many turns of the Calvin cycle?
(A) 3                      (B) 2                (C) 5                (D) 4


56. To reduce 6-molecules of CO2 to glucose via photosynthesis, how many molecules of NADPH and ATP are required?
(A) 6 NADPH and 6 ATP   (B) 12 NADPH and 12ATP      (C) 12 NADPH and 6 ATP         (D) 6 NADPH and 12 ATP


57. RUBISCO:
(A) catalyzes the carboxylation of CO2 to ribulose 1,5-biphosphate          (B)catalyzes the reduction of two molecules of PGAL to form glucose           (C)both of the above                       (D)none of the above


58. CO2 fixation occurs within the stroma
(A) True          (B) false


59. For every CO2 molecule fixed by photosynthesis, one molecule of O2 is produced
(A) True               (B) false


60. Light is required for the light-dependent reactions because_____
(A)it is the source of electrons              (B)it splits the H2O molecule                (C)it energizes electrons in the reaction center                      (D)it spits ATP molecules which generates the energy necessary to power the light-independent reactions


61. The Krebs cycle can also be called which of the following?
(A) Citric acid cycle   (B) tricarboxylic acid cycle      (C) all of the above         (D) none of the above


62. Anaerobic respiration in plants occurs in the_______
(A) Cytoplasm              (B) nucleus               (C) mitochondria          (D) chloroplast


63. Total net ATP formed in the process of respiration in animal is ________
(A) 36 ATP                   (B) 34 ATP              (C) 2 ATP               (D) 38 ATP


64. Total net ATP formed in the glycolysis of plants is _______
(A)36 ATP                (B)34 ATP             (C)2 ATP                (D)38 ATP


65. Total net ATP formed in the Krebs cycle of animals is_______
(A) 36 ATP                         (B) 34 ATP               (C) 2 ATP              (D) 38 ATP

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