9th Biology Chapter # 7 All Punjab Board Papers | 5 Years old Board Papers MCQs questions | Repeated MCQs questions in all Board Papers - E-Learn

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9th Biology Chapter # 7 All Punjab Board Papers | 5 Years old Board Papers MCQs questions | Repeated MCQs questions in all Board Papers

   CHAPTER No. 7

 1.      Energy stored in the chemical bond is:          

(A) Potential energy                                      (B) Kinetic energy

(C)   Elastic energy                                         (D)   Both A & B

2.      The loss of electron from atom is called:                               

(A) Reduction             (B) Oxidation              (C) Anabolism                        (D) Catabolism

3.      The energy Currency of all cells is.                             

(A) ADP                       (B) AMP                      (C) ATP                                    (D) AFD

4.      From which bond of ATP......energy is taken?                      

(A) P-P bond              (B) C-H bond              (C) C-O bond              (D) C-N bond

5.      ATP molecule was discover in……………

(A) 1829                     (B) 1939                     (C) 1929                     (D) 1839

6.      ATP was discovered by

(A)  Fritz Lipmann      (B) Karl Lohmann      (C) Hamann                (D) Both A and B

7.      Each ATP molecules has the number of sub units.

(A) 2                            (B) 3                            (C) 4                            (D) 5

8.      ATP is an example of:                                                               

(A)  amino acids         (B) fatty acid              (C) nucleic acid          (D) nucleotide

9.      The example of a nucleotide is

(A) ATP                                   (B) DTP                                    (C) AMP                      (D) ADP

10.  Nitrogenous base of ATP molecule is:

(A) adenine                (B) guanine                 (C) cytocine                (D) thyamine

11.  Number of phosphate groups in ATP molecule:

(A) one                                    (B) two                                    (C) three                     (D) four

12.  One molecule of ATP release energy.

(A) 7300 calories                                           (B) 3700 calories                  

(C) 370 calories                                             (D) 1700 calories

13.  One mole of ATP releases energy:                                         

(A)7.8 k.cal.                (B) 7.9 k.cal                (C) 7.10 k.cal              (D) 7.3 k.cal

14.  By product of photosynthesis is:                                                        

(A) Carbon dioxide    (B) Nitrogen               (C) Oxygen                  (D) None of these

15.  Stomata cover only____ of the leaf surface:                        

(A) 1-2%                     (B) 2-3  %                    (C)   3-4%                    (D)   4-5%

16.  Water enters into root hairs by means of

(A)  diffusion                                                   (B) osmosis               

(C) Active transport                                      (D) passive transport

17.  The roots and root hairs absorb water from soil by:           

(A) Osmosis               (B) Diffusion               (C)   Phloem               (D)   Air

18.  In which part of chloroplast, light reactions of photosynthesis take place?

(A) Outer membrane (B) Inner membrane            (C) Stroma      (D) Thylakoid membranes

19.  Which reaction occurs on the thylakoid membrane of chloroplast./Dark reaction takes place:

(A) Dark reaction       (B) light reaction       (C) Electron transport (D) Glycolysis

20.  In which part of chloroplast dark reactions of photosynthesis take place:

 (A) Outer membrane           (B) Inner membrane (C) Stroma                  (D) Thylakoid

21.  The whole series of light reactions is called:                        

(A) S-scheme              (B) Z-scheme              (C) L-scheme              (D) None of these

22.  The details of dark reaction were discovered by………..

(A) Hans Kreb                        (B) Robert Brown      (C) Malvin Calvin       (D) de Duve

23.  Dark reactions are part of

(A)  Respiration          (B) necrosis                (C) photosynthesis    (D) metastasis

24.  Malvin Calvin was awarded Nobel Prize due to his work on:

(A)  Transpiration       (B) photosynthesis    (C) respiration                       (D)  evaporation

25.  Sun light is absorbed by:

(A) Flower                  (B) Stem                     (C) Chlorophyll          (D) Leaves

26.  How much light is absorbed falling on the leaf surface?

(A) 1%                         (B) 2%                         (C)4%                          (D) 3%

27.  Chlorophyll pigment absorbs maximum light in the wave length of         

 (A) Green and blue                                       (B) Only green           

(C) Green and red                                          (D) Red and blue

28.  When chlorophyll molecule absorbs light their energy level increases and areemitted?

(A) Proton                  (B) Neutron                (C) Electron                (D) None of these

29.  In which component of the leaf cell chlorophyll is present            

(a)   Plasma membrane (B) Thylakoids        (C) Cytoplasm                        (D) Stroma

30.  The greatest fuel energy for cellular respiration is:             

(A) Glucose                (B) Protein                  (C) Amino acid           (D) Lipids

31.  Through which process organisms gets energy.                   

(A) photosynthesis   (B) respiration                       (C)transpiration         (D) evaporation

32.  _______ is used in aerobic respiration:

(A) oxygen                  (B) carbon dioxide     (C) light                       (D) nitrogen

33.  Aerobic respiration occurs in:

(A) Cytoplasm                        (B) Plastids                 (C) Lysosomes                       (D) Mitochondria

34.  Whose fermenting powers are used for making cheese and yogurt?

(A) Bacteria                (B) Virus                     (C)Fungi                      (D) Algae

35.  Process of glycolysis is found in________                            

(A) ribosomes                        (B)cytoplasm             (C) Golgi complex      (D) vacuole

36.  Which of these can enter into Krebs cycle?                          

(A) Pyruvic acid                                             (B) Glucose    

(C) Citric acid                                                 (D) Acetyl Co-enyzme A

37.  In which process aerobic respiration oxygen takes part is called:

(A) Glycolysis                                                 (B) Krebs cycle

(C) Mid phase of glycolysis s Krebs cycle   (D) Electron transport chain

38.  The compound that absorbs CO2 is:

(A) NaOH                    (B) KOH                       (C)   Ca (OH)2              (D)   Mg(OH)2

39.  How many molecules of Care produced when Krebs cycle operates once?

(A) 6                            (B) 3                            (C) 2                            (D) 1

40.  In which stage of respiration carbon dioxide gas is produced?

(A)  glycolysis                                                  (B) Krebs cycle                      

(C) Electron transport chain                                    (D) none of these

41.  How much ATP molecules are formed during Cellular Respiration:(2 times)

(A) 40                          (B) 38                          (C) 63                          (D) 36

Answers

1

2

3

4

5

6

7

8

9

10

11

12

13

14

A

B

C

A

C

B

B

D

A

A

C

A

D

C

15

16

17

18

19

20

21

22

23

24

25

26

27

28

A

B

A

D

B

C

B

C

C

B

C

A

D

C

29

30

31

32

33

34

35

36

37

38

39

40

41

 

B

A

B

A

D

A

B

D

D

B

C

B

D

 

 


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