My lab group studied the effect of PH on reaction rate/ enzyme activity measured by foam height. PH is the measure of the concentration of hydrogen ions in a solution. The higher the hydrogen ion concentration‚ the lower the pH. Every enzyme has an optimal PH‚ meaning they have a very small window in which they are most active. Our enzyme (potato smoothie) had an optimal PH of 7.0-7.5. We know this because we measured the enzyme’s reaction rate by measuring foam height. The largest foam height we
Premium Enzyme Chemical reaction Chemistry
After 4 gram stains‚ the slide was blot dried and observed under microscope at 100x with oil immersion. The slide either appear in pink (gram-negative) or purple (gram-positive). Catalase Test: Catalase test enzyme detection of microorganisms‚ catalase hydrolysis hydrogen peroxide (H2O2) into H2O and O2. The catalase test was performed by used a sterile transfer loop been flamed to remove small amount of bacteria from slant agar and placed on the slide. Then
Premium Gram staining Staining Bacteria
Marissa Ware Partner(s): None Chem 253—TA: Josh Lovell Lab 1: Effect of pH on a Food Preservative 6/11/13 Purpose: (1 point) To determine whether a chemical change occurs when Sodium Benzoate is acidified to Benzoic Acid. Theory: (2 points) Sodium Benzoate is a common food preservative found in jellies‚ jams‚ sodas‚ fruit juices‚ etc... Its acid‚ Benzoic Acid‚ is an organic preservative that stops the growth of bacteria‚ yeasts‚ and molds. Reaction: (3 points) Reaction: sodium
Premium Chemistry Chlorine Hydrochloric acid
Introduction I am require to review a play activity that I used my observational skills to plan for. I decided to do indoor art activity‚ which was making a Robin. Children by doing this activity may learn the textures and colours‚ and they will use a hand and eye co-ordination. The Intellectual‚ Physical‚ Language‚ social and emotional observations allows the adult to find out what children understand‚ how they think‚ what they are able to do‚ and interests are. This information helps the adult
Premium Developmental psychology
I believe … I believe … Teaching Resources For The Nicene Creed & The Apostles’ Creed Teaching Resources For The Nicene Creed & The Apostles’ Creed Teacher Background What is a Creed? A creed is a set of words. It says what a person or group believes in‚ and helps express the identity of the group. It is a faith put into words. Throughout its long history‚ the Catholic Church has pursued a deeper understanding of Jesus and his message. Driven by the human need to name
Premium Trinity Christianity Jesus
and oxygen produced by the potatoes catalase reacting with hydrogen peroxide) was a kind of indicator of how the reaction was going. It almost indirectly related to the temperature increase‚ because every time the temperature was rising there also seemed to be foam also rising at the top of the hydrogen peroxide. As you can compare when the temperature started rising in my tests‚ my observations would also have a correlation to the foam produced by the catalase.
Premium Chemical reaction Oxygen Enzyme
time for activities that improve the mind‚ such as reading and doing word puzzles. Other people feel that it is important to rest the mind during leisure time. • You should write at least 250 words. • You should spend about 40 minutes on this task. In generally‚ people agree that leisure time is important for everyone. We feel tried ourselves after the work‚ the study‚ than we want to spend little time for doing what we want. However‚ everyone like to do another types of activity. Some people
Premium Psychology Leisure
An investigation into the effects of sugar concentration on yeast activity Introduction: Yeasts are eukaryotic micro organisms belonging to the kingdom fungi. Yeasts live on sugars and produce ethanol and carbon dioxide as by-products. [James Mallory‚ 1984]When Yeasts are given water and sucrose they convert the sucrose into glucose then convert the glucose into carbon dioxide and ethanol following the following reaction: C₆H₁₂O₆ ( 2(C₂H₅OH + CO₂ [Brady Burkhart‚ Terrell Grayson and Eric Kimler
Premium Yeast Carbon dioxide Oxygen
The relatively close pH levels of Tap Water‚ Spring Water‚ Flavored Water‚ and Seltzer Water. Introduction This experiment was performed to investigate the following hypothesis: The following four different types of drinking water (spring water‚ seltzer water‚ tap water‚ and flavored water) we test will relatively have the same pH level. Our group decided to test different types of drinking water to see if a pH level of tap water is comparable to other types of water. Many people believe
Premium PH Drinking water Water
Republic Act No. 9344 AN ACT ESTABLISHING A COMPREHENSIVE JUVENILE JUSTICE AND WELFARE SYSTEM‚ CREATING THE JUVENILE JUSTICE AND WELFARE COUNCIL UNDER THE DEPARTMENT OF JUSTICE‚ APPROPRIATING FUNDS THEREFOR AND FOR OTHER PURPOSES Be it enacted by the Senate and House of Representatives of the Philippines in Congress assembled: TITLE I GOVERNING PRINCIPLES CHAPTER 1 TITLE‚ POLICY AND DEFINITION OF TERMS Section 1. Short Title and Scope. - This Act shall be known as the "Juvenile
Premium Crime Law Childhood