Bioenergetics Biology Test 01

Total Questions: 25

1 - In which of the following steps of respiration is CO2 produced?

A ) Glycolysis
B ) Krebs cycle ✅
C ) Electron transport chain
D ) All of these

2 - Oxygen takes part in aerobic respiration in;

A ) Glycolysis
B ) Krebs cycle
C ) Electron transport chain ✅
D ) Both b & c

3 - When a plant was kept in darkness for many days, its leaves turned yellow. Why?

A ) Leaves could not get oxygen and so there was no photosynthesis
B ) Leaves could not get light and so there was no respiration
C ) Leaves could not get oxygen and so there was no respiration
D ) Leaves could not get light and so there was no photosynthesis. ✅

4 - From which bonds of ATP molecule is energy taken?

A ) P~P bonds ✅
B ) C~H bonds
C ) C~N bonds
D ) C~O bonds

5 - In which component of the leaf cells is chlorophyll present?

A ) Stroma
B ) Thylakoids ✅
C ) Plasma membrane
D ) Cytoplasm

6 - Which of these can enter into Krebs cycle

A ) Glucose
B ) Pyruvic acid
C ) Citric acid
D ) Acety1 Co-A ✅

7 - When we work hard we suffer, from muscle fatigue because muscle cells;

A ) Carry out aerobic respiration at faster rate and so are tired
B ) Carry out anaerobic respiration and so accumulate more CO2
C ) Carry out anaerobic respiration and so accumulate lactic acid ✅
D ) Carry out aerobic respiration at faster rate and so accumulate lactic acid

9 - The organism which get the prepared food are?

A ) Fungi
B ) Bacteria
C ) Fungi and photosynthetic bacteria
D ) Fungi and non-photosynthetic bacteria ✅

10 - Example of reactions which is direct source of energy:

A ) Oxidation
B ) Redox ✅
C ) Reduction
D ) None

11 - Redox reactions involve exchange of:

A ) Electrons ✅
B ) Protons
C ) Neutrons
D ) Atoms

12 - In living organisms, redox reactions involve the loss and gain of:

A ) Oxygen
B ) Carbon
C ) Nitrogen
D ) Hydrogen ✅

13 - The major energy currency of all cells is:

A ) ADP
B ) ATP ✅
C ) AMP
D ) P-bonds

14 - Number of carbon atoms attached to ribose sugar;

A ) Two
B ) Three
C ) Five ✅
D ) Ten

15 - Number of P-bonds in an ATP molecule.

A ) Two ✅
B ) Nine
C ) Six
D ) Four

16 - The breaking of one phosphate bond from ATP releases energy:

A ) 7.9 Kcal
B ) 7.5 Kcal
C ) 7.1 Kcal
D ) 7.3 Kcal ✅

17 - Photosynthesis is an example of:

A ) Metabolism process
B ) Catabolic process
C ) Anabolic process ✅
D ) Chemical process

18 - Dark reactions take place in:

A ) Stroma ✅
B ) Mitochondria
C ) Nucleolus
D ) Thylakoids

19 - Example of co-enzyme is:

A ) NAD+ ✅
B ) NADH
C ) AMP
D ) None of these

20 - The raw materials in photosynthesis are;

A ) Water Oxygen
B ) CO2, CO2
C ) Water, CO2 ✅
D ) Glucose, Water

21 - The water from the soil enters into the root hairs by the process of;

A ) Photosynthesis
B ) Osmosis ✅
C ) Diffusion
D ) Respiration

22 - The air enters the leaf through:

A ) Pits
B ) Stomata ✅
C ) Mesophyll
D ) Xylem vessels

23 - The light reactions of photosynthesis take place on the:

A ) Stroma
B ) Thylakoid membrane ✅
C ) Lumen
D ) Sacs

24 - The reactions which do not require light during photosynthesis are called:

A ) Chemical reaction
B ) Redox reaction
C ) Dark reaction ✅
D ) Light reaction

25 - Electron are passed to ETC to produce:

A ) AMP
B ) ATP ✅
C ) ADP
D ) None of these