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View all Biology IA exemplars
Determining a Relationship between the Thickness of the Left Ventricular Wall and the Aortic Lumen Area in Mammalian Hearts
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Biology
IA
3
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
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Biology
IA
4
SL
Pro
Investigating the effect of L-ascorbic acid concentration on the rate of catalase activity in potatoes
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Biology
IA
3
HL
What is the effect of varying concentrations of caffeine (0%, 2%, 4%, 6%, 8%, 10%) on amylase inhibition by measuring rate of hydrolysis of starch via a colorimeter over a 7-minute period?
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Biology
IA
5
HL
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?
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Biology
IA
6
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?
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Biology
IA
6
HL
Pro
How does the pH of lactose (2, 4, 6 , 8 ,10) affect the concentration of glucose (mmol/liter) after 5 minutes?
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Biology
IA
4
HL
Pro
How do different sweeteners (white sugar, brown sugar, honey, maple syrup and stevia) affect the fermentation rate of black tea kombucha measured by the change in pH using the pH meter over eone week at room temperature?
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Biology
IA
5
HL
Pro
To what extent does the variety of apple (Malus domestica: Granny Smith, Jazz, Pink Lady, Golden Delicious, Honey Crisp)1 affect the rate of osmosis measured using the percentage change in mass over 5 hours in a 2M NaCl solution?
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Biology
IA
5
HL
Pro
What are the effects of increasing the concentration of coffee grounds (0%, 5%, 10%, 15%, 20%) in the soil on providing an optimal environment for the growth of Vigna radiata in 7 days?
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Biology
IA
5
HL
Pro
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