To what extent the effect of Bromelain enzyme of Pineapple (Ananas comosus) in different stages of ripeness (Extremely underripe, Underripe, Ripe, Slightly overripe, Extremely overripe) on the weight of Gelatine blocks?

How does altering robusta coffee concentrations (0%, 1%, 2%, 3%, 4%) affect the rate of fermentation in Saccharomyces cerevisiae, measured by CO₂ production in parts per million (ppm) over 5 minutes?

How does the pH of an amylase solution affect the rate of reaction in the breakdown of starch?

How do beverages containing caffeine (coffee, celsius, green tea, coke and water (as control) affect heart rate (BPM) using self-measured pulse rates (BPM) over a fixed time period?

How does increasing pH levels ( 3, 4, 5, 6, and 7) affect the fermentation rate (ppm) of yeast (Saccharomyces cerevisiae) when reacting in a 10% sucrose (C12H22O11) solution?

Effects of different concentrations of Amoxicillin (0.00M, 0.02M, 0.04M, 0.06M, 0.08M, 0.10M ) on the growth of Phaseolus vulgaris as measured by the shoot length in millimeters (± 0.1) using 30 cm ruler ( ± 0.05) for 15 days.

What is the relationship between different concentrations of honey (0%, 5%, 10%, 20%, 30%) and the inhibition of Rhizopus stolonifer growth, as measured by the diameter of the Inhibition Zone?

How changing the concentration(0.010g/100g of soil, 0.050g/100g of soil, 0.150g/100g of soil, 0.500g/100g of soil, 1.000g/100g of soil,) of microplastics in soil affects the concentration of chlorophyll a and b in Common Oats (Avena sativa) calculated through the measurement of the absorbance of the chlorophyll extract at 645 nm and 663 nm from a spectrophotometer.

How does varying soil acidity affect the growth rate of the plant height of Raphanus sativus in a mesocosm environment?

Does the storage method of Musa acuminata (common banana) affect the speed of their browning process, measured by the time the skin turns brown completely and calculating the volume of brown spotting on the inside (pulp)?

What is the effect of different masses of ascorbic acid (0.00g, 0.25g, 0.50g, 0.75g, 1.00g in 100 mL water) on the browning rate of apple cubes, measured by absorbance using a spectrophotometer?

How does varying concentration of the maltose solution of 0.000M, 0.009M, 0.0018M, 0.036M, 0.072M (±0.0001) affects fermentation in Saccharomyces cerevisiae (Brewer’s yeast) by measuring the time in seconds (±0.5 ) taken for 1.0M Ca( ) (0.01) to form white precipitate ?

To what extent does the concentrations of Lactococcus lactis, 0.50g/50ml, 1.00g/50m/, 1.50 g/50ml, 2.00g/50ml, and 2.50(±0.01)g/50ml affect the fermentation of 50.0(±0.5ml) Bos taurus (cow’s milk) measured by a decrease in pH after 12 hours (±0.2 seconds) using a pH meter (±0.05 pH units) at a constant temperature of 30.0°C (±0.1)

How does temperature (23 °C, 32 °C, 37 °C, 43 °C) affect the rate of CO2 production in the process of yeast fermentation?

What is the effect of different concentrations (0%, 50%, 65%, 75%, 85%, 100%) of a disinfectant on the growth of Staphylococcus aureus (S. aureus) bacteria in a petri dish?

How does exposure to increasing concentrations of indoleacetic acid (IAA) 0.0g/ml, 0.1g/ml,0.2g/ml,0.3g/ml and 0.4g/ml (±0.01 g/ml ) affect the growth of)Triticum aestivum seedlings as measured by the rate of root elongation (radicle length) in mm (30.5 mm) 7 days after germination in a lab.

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?

How does varying screen light intensity (MacBook brightness levels: 16, 8, 4, and 2), in combination with light forest vs. dark forest background colours, influence the survival rate of light- and dark-winged Biston betularia(peppered moth) from predation by (Tyrannus tyrannus)Eastern kingbird in a simulated natural selection experiment?

How does amylase influence the breakdown of starch in processed and unprocessed foods?

How does different concentration of Abscisic acid 0.00 g/dm³, 0.50 g/dm³, 1.75 g/dm³, 3.00 g/dm³, 4.25 g/dm³ and 5.50g/dm³ (±0.01) affect the rate of transpiration of Lycopersicum esculentum (tomato plant) as measured by the distance travelled by the air bubble over the time taken 12 hours (±0.001s)?

To what extent is barley’s (Hordeum vulgare L.) germination success and growth (stem length [cm], biomass [g]) affected by different types of soils (clay, sandy, humus, peaty, loamy) over 11 days?

To what extent is the activity of 𝝰-amylase inhibited by different concentrations of boric acid (0.1%0.5%,1%,2%,3%) in its hydrolisis reaction with starch?

To what extent does an increase in temperature from 10.0, 20.0, 30.0, 40.0, and 50.0 (±0.5) °C affect the reaction between an extract from Musa acuminata (M. acuminata) and 2.35 M (±0.01 M)hydrogen peroxide, measured by the volume of oxygen produced using a gas syringe (±0.5 cm³)?

How does increasing sleep duration (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 hours) affect human muscle development in an active individual over a 720 hour period in the NetLogo muscle development simulation?

How is reaction time impacted after attending dissimilar school subjects in the form of responding to a colour change in a mobile device application “Reaction training”, assessed by the speed of tapping the smartphone screen, measured in milliseconds?

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?

To what extent is the number of Cystic Fibrosis patients receiving oxygen therapy in the year 2019, in 15 European countries, impacted by annual temperature and annual precipitation, an indicator of humidity?

What is the effect of pH levels 2, 4, 7, 9, and 13 of the reaction medium upon the catalytic activity of the pepsin enzyme on gluten extracted from plain wheat flour over 24 hours in an incubator at a constant temperature of 37 °C as measured by absorbance at wavelength 500, 540, 580, 620, 640, 700 using a spectrophotometer?

What is the effect of varying lactase concentrations (5mg/mL, 25mg/mL, 50mg/mL, 100mg/mL, 150mg/mL) on the breakdown of lactose monohydrate, as determined by the absorbance of a spectrophotometer set at 540nm (±0.001nm) that indicates the concentration of monosaccharide glucose present after the 3-minute reaction?

How strongly do varying pH levels of soda beverages (4.27, 3.24, 3.22, 3.10, 2.37) influence the demineralization of calcium carbonate (CaCO3) in chicken eggshells (Gallus gallus domesticus), as measured by mass loss over a 24-hour period?

What effect does varying the concentration (0.1, 0.2, 0.3, 0.4, 0.5 mMol) of galactose as a competitive inhibitor have on the rate of lactose hydrolysis by lactase, measured by the amount of glucose produced (in mg/dL) using a glucometer after 90 minutes of heating in a 37℃ water bath?

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?

Is There a Correlation Between the Width of The Left Ventricular Cavity and The Width of The Septum in Mammalian Hearts?

How does increasing the mass of black tea powder (15g, 30g, 45g, 60g, 75g) & NPK fertilizer (0.25g, 0.5g, 0.75g, 1g, 1.25g) influence the sugar concentration on Long beans (Vigna sinensis L), measured by the brix% (%mas sucrose) using a refractometer?

How‬‭ does‬‭ the‬‭ concentration‬‭ of‬‭ green‬‭ tea‬‭ (‬‭ 0.000‬‭ g/mL,‬‭ 0.002‬‭ g/mL,‬‭ 0.004‬ ‭ g/mL,‬‭ 0.006‬‭ g/mL,‬‭ 0.008‬‭ g/mL,‬‭ 0.010‬‭ g/mL)‬‭ affect‬‭ the‬‭ rate‬‭ of‬‭ decomposition‬‭ of‬‭ hydrogen‬ ‭peroxide‬‭ catalysed‬‭ by‬‭ catalase,‬‭ as‬‭ measured‬‭ by‬‭ volume‬‭ of‬‭ oxygen‬‭ gas‬‭ (mL/s)‬‭ produced‬‭ in‬‭ 30‬ ‭seconds?

Does the relationship between Vaccinium myrtillus and soil conductivity demonstrate an optimum for its growth between the range of 45.7-96.9 μS/m, in a boreal forest on an island, Vässarö in late May?

What is the effect of age (18–24, 25–32, 33–40) and gender (male and female) on reaction time (ms) and visuospatial short-term memory in humans (Homo sapiens)?

How does biodiversity, as quantified by Simpson's Diversity Index (SDI), vary with increasing distance (0 to 50 metres) from the low to high intertidal zones in Tioman Island, Malaysia?

To what extent is there a correlation between light intensity and plant biodiversity as measured by the Simpson’s Diversity Index?

What is the effect of pH (2, 3, 4 and control 8) on the frequency of vegetative budding in common duckweed (Lemna minor) over seven days?