OPERATIONAL DEFINITION

2006

Based on this experiment, what can you deduce about this enzyme?
( Pepsin on albumin)
This enzyme/pepsin hydrolysed/digest/act on albumen suspension which is cloudy to become clear and the rate of enzyme/pepsin reaction is affected by the concentration of substrate/albumen

2007 Based on the results of this experiment, what can be deduced about photosynthesis? Photosynthesis is a process where Hydrilla sp. in sodium hydrogen carbonate solution produces bubbles and the number of bubbles released is influenced by light intensity

2008
State the operational definition for population distribution of Pleurococcus sp.
Population distribution is defined as the total surface area covered by Pleurococcus sp. in a 10cm X 10cm grid at different light intensity/is affected by light intensity.

2009

Based on the result of this experiment, state the operational definition for the process of photosynthesis.

The process of photosynthesis is where the aquatic plant in sodium hydrogen carbonate solution produces gas bubbles and the length of the gas bubble released is influenced by light intensity.

2010

State the operational definition for exhaled air.

Exhaled air is the air column/air sample collected in the J-tube which contains CO2 and is absorbed by potassium hydroxide. The length of air column is influenced by time of activity.

2011

Define operationally hydrolysis of starch.

Hydrolysis of starch is the process where amylase breaks down starch and is shown by the time taken for iodine solution to remain yellow. Hydrolysis of starch is affected by the pH value of the solution