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Heat Experiment on Germinating Seeds

In respiratio...

Question

In respiration, the energy not captured by ATP is

A

Transferred to organic compounds

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B

Converted into heat

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C

Liberated along with

C O_{2}

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D

Transferred to water

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Solution

The correct option is B Converted into heat
The breakdown of 1 mole of glucose during respiration yields 686 kilo calories of energy. Out of this 266 kilo calories of energy is the one which is stored as ATP while remaining 420 kilo calories of energy is liberated as heat. Thus, only a fraction of energy goes into the high energy bonds of ATP and since the overall reaction is exergonic, some energy is lost as heat.
Thus, the correct answer is option B.

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Q. It is given that in photosynthesis

C O_{2} + H_{2} O

C_{6} H_{12} O_{6}

but respiration involves oxidation of

C_{6} H_{12} O_{6}

C O_{2}

H_{2} O

for producing energy so can't plants directly use

C O_{2}

H_{2} O

to synthesize energy (in form of ATP) that they had obtained from atmosphere and water. If so then what's the use of photosynthesis for plants.

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Heat Experiment on Germinating Seeds

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