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

Answer

0.5 million

Answer

Half a million

Answer

All of above

Question 2

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

Answer

Biochemistry

Answer

Bioenergetics

Answer

THermodynamics

Answer

Biophysics

Question 3

3. Thylakoid sacs are stacked in columns called ?

Question 4

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

Question 5

5. The color of chlorophyll b is ?

Answer

Blue and green

Answer

Orange green

Answer

Orange red

Answer

Yellow and green

Question 6

6. 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 7

7. Thylakoid membranes are involved in ATP formation by ?

Answer

Chemosynthesis

Answer

Chemiosmosis

Answer

Oxidative phosphorylation

Question 8

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

Answer

Transmitted

Question 9

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

Answer

Chlorophyll

Question 10

10. The pigments found in the thylakoid membranes are ?

Answer

Chlorophyll

Answer

Carotenoids

Answer

All of these

Answer

Xanthophyll

Question 11

11. Which part of plant captures light energy ?

Answer

Choroplast

Answer

Mesophyll cell

Question 12

12. Which wavelengths are mainly absorbed by chlorophyll ?

Answer

Green and blue

Answer

Red and indigo

Answer

Violet blue and orange red

Answer

Violet and orange

Question 13

13. Process of photosynthesis is almost exactly opposite to ?

Answer

Fermentation

Answer

Aerobic respiration

Answer

Combustion

Answer

Anaerobic repiration

Question 14

14. Chlorophyll contains magnesium in which part ?

Answer

Pyrrole ring

Answer

Phytol tail

Answer

Hacme portion

Question 15

15. Which statement about chlorophyll is not true ?

Answer

It contains porphyring ring

Answer

It contains phytol tail

Answer

It contains terminal carbonyl group

Answer

It contains magnesium

Question 16

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

Answer

Photosynthesis

Answer

Dark reactions

Answer

Respiration

Question 17

17. 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 18

18. Spectrophotometer is used to measure ?

Answer

Absorption of carbon

Answer

Absorption of different wavelengths

Answer

Absorption of water

Answer

Absorption of blue light

Question 19

19. What is not correct of photosynthesis ?

Answer

None of these

Answer

It occurs during day time

Answer

It uses oxygen

Answer

It uses water

Question 20

20. The products of photosynthetic light reaction are ?

Answer

ATP and NADH

Answer

ATP and NADPH

Answer

ATP and FADPH

Answer

ATP and NAD

Question 21

21. What is unrelated to light reactions ?

Answer

NADPH is produced in it

Answer

It can occur in light only

Answer

ATP is produced in it

Answer

It can occur in dark

Question 22

22. Oxygen released during photosynthesis comes from ?

Answer

Atmosphere

Answer

Carbian dia axcide

Question 23

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

Question 24

24. Which wavelengths are least absorbed by chlorophyll ?

Answer

Blue and red

Answer

Violet and yellow

Answer

Orange and indigo

Answer

Green and yellow

Question 25

25. What is the role of water in photosynthesis?

Answer

Reduces glucose

Answer

Provides electrons and protons

Answer

Releases carbon dioxide

Answer

Absorbs light

Question 26

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

Answer

Two carbon dioxide molecules

Answer

Two lactate molecules

Answer

One acetyl-CoA

Answer

Two pyruvate molecules

Question 27

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

Answer

Carbon dioxide

Question 28

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

Answer

Golgi apparatus

Answer

Inner mitochondrial membrane

Answer

Mitochondrial matrix

Question 29

29. The term "oxidative phosphorylation" refers to:

Answer

ATP production using energy from electrons and oxygen

Answer

ATP formation during glycolysis

Answer

Electron transfer without ATP

Answer

Glucose oxidation

Question 30

30. What is photolysis?

Answer

Absorption of sunlight

Answer

Fixation of carbon dioxide

Answer

Splitting of water using light

Answer

Breakdown of glucose

Question 31

31. Which of the following occurs in the cytoplasm?

Answer

Glycolysis

Answer

Electron transport chain

Answer

Krebs cycle

Answer

Oxidative phosphorylation

Question 32

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

Answer

Electron transport chain

Answer

Krebs cycle

Answer

Fermentation

Answer

Glycolysis

Question 33

33. Which pigment is primarily responsible for absorbing sunlight?

Answer

Chlorophyll-b

Answer

Chlorophyll-a

Answer

Xanthophyll

Question 34

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

Answer

PGA (3-phosphoglyceric acid)

Question 35

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

Answer

Carbon dioxide

Question 36

36. Which process occurs in the absence of oxygen?

Answer

Anaerobic respiration

Answer

Glycolysis

Answer

Aerobic respiration

Answer

Electron transport chain

Question 37

37. Which gas is released during photosynthesis?

Answer

Carbon dioxide

Question 38

38. Which stage of photosynthesis does not require light?

Answer

Light-dependent reaction

Answer

Calvin cycle

Answer

Photolysis

Answer

Photophosphorylation

Question 39

39. Where does the Calvin cycle take place?

Answer

Thylakoid membrane

Answer

Mitochondrial matrix

Answer

Stroma of chloroplast

Question 40

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

Answer

Thylakoid membrane

Answer

Inner membrane

Question 41

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

Question 42

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

Answer

ATP and NADPH

Question 43

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

Answer

Light intensity

Answer

CO₂ concentration

Answer

Oxygen concentration

Answer

Temperature

Question 44

44. Cyclic phosphorylation produces:

Question 45

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

Question 46

46. Photosynthesis takes place in:

Answer

Chloroplasts

Answer

Mitochondria

Question 47

47. Chloroplast encloses a dense fluid filled region called ?

Question 48

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

Question 49

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

Answer

Carbon dioxide

Answer

Lactic acid

Question 50

50. Non-cyclic phosphorylation produces:

Answer

ATP and NADPH

Answer

Oxygen only

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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