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WorksheetsBiology RPA: Paper 2
Total questions: 20
Worksheet time: 17mins
What is used to test reaction time?
(a)
Where should the person being tested have the their hand, under or on top?
(a)
How do you make the ruler drop test a fair test for testing the impact of caffeine?
Same person every time
Same hand every time
Same height of drop
Calculate a mean and exclude anomalies
Have everyone consume the same volume of caffeine
What else can be used to test reaction time?
The bleep test
Computer programs
rock, paper, scissors
Electrical stimulation
What is the independent variable in the plant growth experiments? 2 options
Light
Length of seedling
Rate of photosynthesis
Gravity
Name some control variables to the plant growth investigation
Geotropism of each plant
Number of seedlings in each dish
Volume of water for each dish
Temperature they are kept at
Number of stomata on each leaf
How many seeds should go in each petri dish?
(a)
How often should you measure the height of each seedling?
(a)
What is used to measure the height of the seedlings?
(a)
What is needed to be ensured when placing quadrats?
(a)
What do quadrats measure?
The area of a field
The distribution of organisms along a line
The average number of an organism within a certain area
The height of seedlings
What is used to measure the distribution of organism along an area?
(a)
When using quadrats to count organisms along a transect, what is it important to do?
Ensure randomness
Use bigger quadrats
Place quadrats at regular intervals
Count all of the organisms and divide by 2
The decay investigation assesses the impact that (a) has on decay.
How much lipase and milk should be measured out in their own test tubes? (write as x cm cubed)
(a)
Into which test tube does the 5 drops phenolphthalein go into?
The milk one
The lipase one
What is put into the milk solution to make it alkaline?
(a)
What apparatus is needed after preparing the test tubes?
Bunsen burner
Water bath
Stopwatch
Thermometer
Oil
Name some control variables
Same volume of lipase
Same volume of milk
Same time before being mixed
The pH gets more acidic in the decay experiment because of the production of...
(a)
