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Metabolic Rates

QuestionAnswer
Name one way metabolic rate can be measured 1.oxygen consumption 2.carbon dioxide production 3. heat production
State the apparatus that can measure heat production calorimeter
State one way of measuring oxygen consumption respirometer or oxygen probe
State one way of measuring carbon dioxide production carbon dioxide probe
Name one way of keep the experiment valid when comparing the temperature on respiration rate of maggots in a respirometer Same diameter of tubing, same volume/concentration of chemical to absorb CO2, same number of maggots
State the link between carbon dioxide production and metabolic rate Increased CO2 production = increased metabolic rate
State the link between body temperature and metabolic rate Increased body temperature = increased metabolic rate
State the link between oxygen consumption and metabolic rate Increased oxygen consumption = increased metabolic rate
In data tables, organisms that are metabolising more will show a bigger increase or decrease in oxygen decrease as using up oxygen more
When comparing metabolic rates why is it represented per Kg As organisms are different masses we divided by mass for valid comparison
Describe how a calorimeter measures body temperature Measure water temperature at start and end of coiled pipe and use change in temperature to work out metabolic rate
Explain why a calorimeter is insulated To prevent heat loss to surroundings
Explain why the water pipe is coiled and made of copper Copper = good heat conductor coiled = increases surface area to maximise heat absorption
Created by: brightminds
 

 



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