One can predict that the tube with the highest concentration of yeast will produce the most carbon dioxide and will have the fastest rate of alcoholic fermentation. Results Two separate experiments were conducted to determine the effect of yeast concentration and pH level on the rate of fermentation. The first experiment involved the placement of different concentrations of yeast‚ glucose‚ and distilled water in four different tubes. Pipette pumps were placed on each
Premium Cellular respiration Adenosine triphosphate Metabolism
6‚ 2012 Photosynthesis Lab 1. Introduction: Light dependent reactions are the first phase of photosynthesis. It requires light to happen and happens in the thylakoid membrane in a chloroplast. The light energy is absorbed from the sun and converted into chemical energy. Which is then stored temporarily in ATP and NADPH. Hypothesis: I predict that the wavelength intensity will affect the rate of photosynthesis more than light intensity will. 2. Data: # ATP | Light Intensity (Lux) | Time
Premium Photosynthesis Light Adenosine triphosphate
from one state to another is called a phase shift. Phase shifts are extremely important and most commonly observe phase shifts daily. For an example‚ when water freezes into ice‚ or the water in the shower turns to steam. To begin to start describing how a phase shift works we must understand factors that influence a phase transition. Variables that effect a phase shift are volume‚ pressure‚ temperature‚ and number of moles or molecules present in a system. For simplicity when analyzing a system it
Premium Fundamental physics concepts Thermodynamics Temperature
to start a chemical reaction (2). At high temperatures and with various mechanical forces or chemical treatments‚ proteins can denature causing it to lose its conformational features and hence its ability to function. The enzyme examined in this experiment‚ rennin‚ is derived from the stomachs of calves‚ lambs or goats before consumption of anything but milk. Rennin is initially secreted as an inactive proenzyme called prochymosin‚ which is activated
Premium Enzyme Chemical reaction Catalysis
different amount of sucrose concentrations. The higher molarity concentrations increased the movement of water to balance out the inside of the tube and the beaker. The greater amount of concentration gradient‚ in each tube‚ increased the rate of osmosis. This rate of osmosis is due to the net movement of water from an area of low concentration to an area of high concentration. Because the tubes had different concentrations‚ certain tubes gained more mass than others. Solution A had 0.6 molarity
Premium Chemistry Osmosis Solution
Factors that affect exchange rates. Like any price‚ the exchange rate deviates from the cost basis - the purchasing power of currencies – under the influence of supply and demand of currency. The ratio of the supply and demand depends on several factors. It reflects connections with other economic categories - cost‚ price‚ money‚ interest‚ balance of payments‚ etc. There is a complex of interweaving and nomination of decisive factors. Among them are the following. • 1.The rate of inflation. The
Premium Foreign exchange market Exchange rate Bretton Woods system
Investigation 5: Photosynthesis Problem: If the leaf disks are treated in a way you know increases the net rate of photosynthesis‚ should they start to float faster or slower? Why? Hypothesis: If the leaf disks were bathed in a red light source‚ then the rate of photosynthesis would increase than leaf disks that are bathed in a regular light source because chlorophyll absorbs red pigment and reflects green pigments. Therefore‚ shining a red light source onto the leaf disks would cause them
Free Leaf Carbon dioxide Oxygen
HOW INTEREST RATES AFFECT OUR PURCHASING DECISIONS Fluctuating interest rates have a decidedly large impact on purchasing decisions. Higher interest rates mean that consumers don’t have as much disposable income and must cut back on spending. When higher interest rates are coupled with increased lending‚ banks makes fewer loans. Lower interest rates make it easier for farmers and manufacturers to borrow to invest in equipment and buildings. That gives business more incentive to invest
Premium Inflation Monetary policy
In the experiment‚ as the size of the cube decreased‚ the absorption rate increased‚ showing that the smaller cells absorbed more sodium hydroxide than bigger cells. The smaller cells were able to absorb more sodium hydroxide as they have a bigger surface area to volume ratio causing them to act more efficiently than the bigger cells. The smallest cell had a ratio of 1:12 while the biggest cell had a ratio of 1:2‚ leaving a gap of 5:12 causing the bigger cell to act less efficient in absorbing the
Premium Chemistry Concentration Solution
heat. If an enzyme has been denatured it means the shape has been altered therefore cannot perform its function‚ many factors can cause this including high heat. The hypothesis is if temperature is increased the amount of activity rate will increase. The results for the rate of oxygen production (dependent variable) will increase as the heat increases. The reason is a chemical reaction to the heat gives it energy. Enzyme reactions are important to life because “Enzymes are proteins that control the
Premium Enzyme Chemical reaction Catalysis