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 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.

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.

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 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?

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 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?

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?

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?

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?

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?

How do different pH levels affect the growth of mung beans (Vigna radiata) over 8 days measured by the root and stem length?

How does the annual HIV incidence rate correlate with the mortality rate from non-Hodgkin lymphoma in Indonesia from 1990 to 2020?

How do different concentrations of sodium chloride (NaCl) (0 mM, 25 mM, 50 mM, 75 mM, 100 mM) affect the growth and development of tomato plants (Solanum lycopersicum L.) as indicated by dry weight (g) after 72 hours of oven drying at 70°C after 65 days of salt stress exposure?

How do varying concentrations of fungicide Dithiocarbamate (Propineb (70 WP)) (0 (Control), 50, 100, 200, 400, 800 ppm) enriched with Knop9s Nutrient medium affect the Chlorophyll a and b content (in ¿g/cm³) measured using a spectrophotometer and germination percentage by counting number of seeds germinated of red Amaranthus (Amaranthus dubius) and green Amaranthus (Amaranthus viridis) after 5 days?

How does catalase activity in different plant species: Daucus carota (carrot), Cucumis sativus (cucumber), Solanum tuberosum (potato), Brassica oleracea (broccoli), and Actinidia deliciosa (kiwi) vary, as determined by the volume of oxygen gas released (mL) after a 6-minute reaction time?

To what extent do different pH values of common liquids in the human diet (2.4, 2.6, 3.2, 3.8, 4.2) affect the change in mass (g) of eggshells when submerged for 24 hours and 48 hours to model tooth decay?

How does the change in sunscreen SPF (30, 50, 80, 100) affect the water loss, measured through a change in mass, of pig’s skin (Sus domesticus) when exposed to 24 hours of UV radiation?

How does presence of NaCl affect the photosynthetic ability of a halophyte plant (Medicago marina) compared to a non-halophyte plant (Cupressus sempervirens) as measured using a carbon dioxide sensor?

What are the patterns of clovers (Trifolium) growing in different environments of sunlight, walkability, proximity to city center / water, altitude and meadow frequency in Lithuania during the month of September?

What effect does agarose gel concentration (1% ± 0.0351%, 2% ± 0.0402%, 3% ± 0.0453%, 4% ± 0.0504%, and 5% ± 0.0555%) have on the distance travelled (mm ± 5mm) by bacteriophage λ cI‬ ‭ 857‬‭ Sam7 DNA bands in agarose gel electrophoresis?