Loading exemplars...
Investigating the effect of L-ascorbic acid concentration on the rate of catalase activity in potatoes
Biology
IA
3
HL
To what extent does an individual’s heart rate vary when listening to music with varying music tempos (-40 bpm, -20 bpm, +0 bpm, +20 bpm, +40 bpm) for 3 minutes?
Biology
IA
3
HL
Pro
How do varying concentrations of lead nitrate (0 mol/dm3, 0.1 mol/dm3, 0.2 mol/dm3, 0.3 mol/dm3, 0.4 mol/dm3 and 0.5 mol/dm3) affect the rate of enzyme activity of liver catalase in the decomposition of hydrogen peroxide, by measuring the amount of oxygen produced in 2 minutes using a gas syringe?
Biology
IA
6
HL
Pro
Is there a relationship between the abundance of sea lettuce (Ulva lactuca) (categorized by SACFOR) and the density of common limpets (Patella vulgata) in a marine environment at Helwell Bay?
Biology
IA
5
HL
Pro
How do different temperatures (15°C, 20°C, 25°C, 30°C, 35°C) and light intensities (30%, 40%, 50%, 60%, 70%) affect oxygen production during photosynthesis in aquatic plants?e
Biology
IA
4
SL
Pro
How does iron(ii)sulfate concentration (0.0M, 0.1M, 0.2M, 0.4M, 0.8M) affect the enzymatic activity of catalase (from Bos taurus) measured from the increase in pressure (kPa) inside an Erlenmeyer flask when hydrogen peroxide decomposes over a 60 second period?
Biology
IA
6
HL
Pro
What is the effect of changing iron (II) sulfate concentration (0.00mg/L, 2.00mg/L, 4.00mg/L, 6.00mg/L, 8.00mg/L, 10.0mg/L) on the growth of Lemna minor over 6 days?
Biology
IA
5
HL
Pro
How does the pH of lactose (2, 4, 6 , 8 ,10) affect the concentration of glucose (mmol/liter) after 5 minutes?
Biology
IA
4
HL
Pro
How do baking flours affect the rise rate of cupcakes?
Biology
IA
4
HL
Pro
How do different pHs (2 to 8) affect the solubility of cod fish protein (Gadus morhua) measured using the absorption of light through the supernatant of centrifuged fish solution?
Biology
IA
6
HL
Pro