Biology Bio-Energetic Test Online Mcqs

Q: How can I prepare for Biology Bio-Energetic Test Online Mcqs?

You can prepare for Biology Bio-Energetic Test Online Mcqs by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. The color of chlorophyll b is ?

Answer

Blue and green

Answer

Yellow and green

Answer

Orange green

Answer

Orange red

Question 2

2. Which equation of photosynthesis is correct one ?

A=6CO 2 + 12H 2 O + Light→C₆ H₁₂ O₆ + 6O₂ + 6H₂ O
B=6CO₂ + 6H₂ O + Light→C₆ H₁₂ O₆ + 6O_{2

C=Both of these}

Question 3

3. The principles of energy transformations in living systems is called ?

Answer

THermodynamics

Answer

Biochemistry

Answer

Biophysics

Answer

Bioenergetics

Question 4

4. Oxygen released during photosynthesis comes from ?

Answer

Carbian dia axcide

Answer

Atmosphere

Question 5

5. Which part of plant captures light energy ?

Answer

Choroplast

Answer

Mesophyll cell

Question 6

6. Process of photosynthesis is almost exactly opposite to ?

Answer

Fermentation

Answer

Aerobic respiration

Answer

Anaerobic repiration

Answer

Combustion

Question 7

7. Loght can work in photosynthesis only if it is ?

Answer

Transmitted

Question 8

8. What is unrelated to light reactions ?

Answer

ATP is produced in it

Answer

It can occur in dark

Answer

NADPH is produced in it

Answer

It can occur in light only

Question 9

9. The pigments found in the thylakoid membranes are ?

Answer

Carotenoids

Answer

Xanthophyll

Answer

Chlorophyll

Answer

All of these

Question 10

10. Which wavelengths are least absorbed by chlorophyll ?

Answer

Violet and yellow

Answer

Orange and indigo

Answer

Green and yellow

Answer

Blue and red

Question 11

11. Which statement about photosynthesis is not correct ?

A=CO₂ and H₂ O are used
B=Take place in light and dark
C=Light energy absorbed by chlorophy
D=Occurs in almost all the green parts of Plant

Question 12

12. The number of chlorroplasts in each mesophyll cell ranges from ?

Question 13

13. What is not correct of photosynthesis ?

Answer

None of these

Answer

It occurs during day time

Answer

It uses water

Answer

It uses oxygen

Question 14

14. The presence of free oxygen made possible the evolution of ?

Answer

Photosynthesis

Answer

Dark reactions

Answer

Respiration

Question 15

15. Chlorophyll contains magnesium in which part ?

Answer

Pyrrole ring

Answer

Phytol tail

Answer

Hacme portion

Question 16

16. Which statement about chlorophyll is not true ?

Answer

It contains phytol tail

Answer

It contains porphyring ring

Answer

It contains terminal carbonyl group

Answer

It contains magnesium

Question 17

17. Thylakoid sacs are stacked in columns called ?

Question 18

18. The interior of thylakoid apace is also called a ?

Question 19

19. Which wavelengths are mainly absorbed by chlorophyll ?

Answer

Red and indigo

Answer

Violet blue and orange red

Answer

Green and blue

Answer

Violet and orange

Question 20

20. Magnesium is an important nutrient ion in green plants as it is an essential component of ?

Answer

Chlorophyll

Question 21

21. Thylakoid membranes are involved in ATP formation by ?

Answer

Chemosynthesis

Answer

Chemiosmosis

Answer

Oxidative phosphorylation

Question 22

22. The products of photosynthetic light reaction are ?

Answer

ATP and FADPH

Answer

ATP and NAD

Answer

ATP and NADH

Answer

ATP and NADPH

Question 23

23. Spectrophotometer is used to measure ?

Answer

Absorption of blue light

Answer

Absorption of water

Answer

Absorption of carbon

Answer

Absorption of different wavelengths

Question 24

24. The number of chloroplastis in a square millimeter of leaf surface is about ?

Answer

0.5 million

Answer

All of above

Answer

Half a million

Question 25

25. Which process occurs in the absence of oxygen?

Answer

Aerobic respiration

Answer

Glycolysis

Answer

Electron transport chain

Answer

Anaerobic respiration

Question 26

26. Which molecule is the final electron acceptor in aerobic respiration?

Answer

Carbon dioxide

Question 27

27. Which gas is released during photosynthesis?

Answer

Carbon dioxide

Question 28

28. In the Calvin cycle, which molecule is fixed to form sugars?

Answer

Carbon dioxide

Question 29

29. Where does the Calvin cycle take place?

Answer

Stroma of chloroplast

Answer

Mitochondrial matrix

Answer

Thylakoid membrane

Question 30

30. How many ATP molecules are produced from one glucose molecule in aerobic respiration?

Question 31

31. The net gain of ATP molecules in glycolysis is:

Question 32

32. Cyclic phosphorylation produces:

Question 33

33. Non-cyclic phosphorylation produces:

Answer

Oxygen only

Answer

ATP and NADPH

Question 34

34. Photosynthesis takes place in:

Answer

Chloroplasts

Answer

Mitochondria

Question 35

35. Which pigment is primarily responsible for absorbing sunlight?

Answer

Chlorophyll-b

Answer

Chlorophyll-a

Answer

Xanthophyll

Question 36

36. Which process produces the most ATP in cellular respiration?

Answer

Krebs cycle

Answer

Fermentation

Answer

Electron transport chain

Answer

Glycolysis

Question 37

37. The first stable compound in the Calvin cycle is:

Answer

PGA (3-phosphoglyceric acid)

Question 38

38. How many ATP molecules are used in the Calvin cycle to form one glucose?

Question 39

39. The term "oxidative phosphorylation" refers to:

Answer

Glucose oxidation

Answer

ATP production using energy from electrons and oxygen

Answer

Electron transfer without ATP

Answer

ATP formation during glycolysis

Question 40

40. Which of the following occurs in the cytoplasm?

Answer

Oxidative phosphorylation

Answer

Glycolysis

Answer

Electron transport chain

Answer

Krebs cycle

Question 41

41. What is the role of water in photosynthesis?

Answer

Absorbs light

Answer

Releases carbon dioxide

Answer

Provides electrons and protons

Answer

Reduces glucose

Question 42

42. What is photolysis?

Answer

Breakdown of glucose

Answer

Fixation of carbon dioxide

Answer

Splitting of water using light

Answer

Absorption of sunlight

Question 43

43. Which factor does not directly affect the rate of photosynthesis?

Answer

Light intensity

Answer

CO₂ concentration

Answer

Temperature

Answer

Oxygen concentration

Question 44

44. What is the primary product of the light-dependent reaction?

Answer

ATP and NADPH

Question 45

45. Which of the following is produced during anaerobic respiration in muscles?

Answer

Lactic acid

Answer

Carbon dioxide

Question 46

46. What is the main site of the electron transport chain?

Answer

Inner mitochondrial membrane

Answer

Mitochondrial matrix

Answer

Golgi apparatus

Question 47

47. In glycolysis, one glucose molecule is broken down into:

Answer

Two lactate molecules

Answer

One acetyl-CoA

Answer

Two pyruvate molecules

Answer

Two carbon dioxide molecules

Question 48

48. The light-dependent reactions of photosynthesis occur in:

Answer

Thylakoid membrane

Answer

Inner membrane

Question 49

49. Which stage of photosynthesis does not require light?

Answer

Calvin cycle

Answer

Photolysis

Answer

Light-dependent reaction

Answer

Photophosphorylation

Question 50

50. Chloroplast encloses a dense fluid filled region called ?

Question 51

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Total Questions:	49
Time Allowed:	25 Minutes
Total Marks:	49
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Biology Bio-Energetic Test Online Mcqs

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Important Biology Bio-energetic Question and Answer

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