Heat energy is liberated during respiration, Biology

Some amount of energy is generatred from the oxidation of food materials is released as heat. This can be proved by germinating seeds.
Aim: To show that heat is liberated during respiration.
Apparatus: 2 thermos flasks, 2 thermometers, 2 rubber stoppers,2 beakers with seeds like beans or peas.

Procedure: Take 2 beakers with seeds. To one of the beakers add water and allow the seeds soak for the whole night. On the next day morning take two wide mouthed thermos flasks which can be closed with a tight fitting cork. Put the germinating seeds into one of the thermosflasks and dry seeds in another thermos flask. Make a hole in the cork and insert a thermometer into cork and see the bulb of the thermometer is in the midst of the seeds. Record the temperature in both the flasks at every two or three hour intervals for about 24H.

Observation: The temperature in the flask with germinating seeds is higher than the temperature of the flask with dry deeds. 

Inference: In dry seeds, enzymes are inactive so respiration did not take place and no rise in temperature where as in germinating seeds enzymes are active and respiration has taken place with rise in temperature.

561_Heat energy is liberated during respiration.png

Posted Date: 8/29/2012 8:41:31 AM | Location : United States

Related Discussions:- Heat energy is liberated during respiration, Assignment Help, Ask Question on Heat energy is liberated during respiration, Get Answer, Expert's Help, Heat energy is liberated during respiration Discussions

Write discussion on Heat energy is liberated during respiration
Your posts are moderated
Related Questions
describe the discovery of new fossil evidence for evolution

What is the nitrogen cycle? The nitrogen cycle represents the circulation and recycling of the chemical element nitrogen in nature. The nitrogen cycle basically depends on t

Explain Effect of Nutrient Supplements on Drugs? A nutrient or nutrient supplement can alter the pharmacological action of a drug by enhancing the drug effect or by opposing it

Hydrochory - Dispersal of Seeds Plants that grow in or along the bank of water bodies often utilize water as an agency for dissemination of fruits and seeds. Coconut, Cocos nu

What are trends of the gametophyte in the evolution of plants? The tendency of the gametophyte evolution in plants has been towards the formation of gametes that are self-dete

Raw Material for Industry - impacts on biodiversity The industry, producing goods and services, relies and impacts on biodiversity directly. Much of the raw material that goes

Why is the plant life cycle known as alternation of generations? The plant life cycle is called as alternation of generations because in this cycle there are two dissimilar for

Early human studies are normally conducted in healthy subjects to assess acute safety and, if applicable, to monitor biochemical and pharmacological responses. These studies also p