University of Phoenix Material Animation: Cells & Chemistry Glycolysis After viewing the animation, answer these questions. Cells derive energy from the oxidation of nutrients, such as glucose . The oxidation of glucose to pyruvate occurs through a series of steps called glucosis . How many carbons are in a molecule of glucose? 6 The energy related during these oxidation reactions is used to form adenosine triphosphate ( ATP ), the __energy currency of the cell.
How would sucrose be used as food source for yeasts? * Sucrose is like sugar , * yeast feed on glucose and sucrose being a disaccharide can be broken down by the yeast into glucose. * If you grow yeast in a sealed test tube filled with water and a food source, do you think these growth conditions are aerobic or anaerobic? * It would be aerobic. * The purpose of this lab is to answer the research question: “Does the concentration of sucrose affect the rate of cellular respiration in yeast?” What do you think?
'How temperature affects the rate of reaction of Catalase on the breaking down of Hydrogen Peroxide.' Introduction 'How temperature affects the rate of reaction of Catalase on the breaking down of Hydrogen Peroxide.' Enzymes are catalysts. Some enzymes are proteins. The job of an enzyme is to break down substrates, and in return a product is released from the active site (area where the breaking down happens) of the enzyme.
(ABSORBANCE vs. TIME) The graph shows that the enzyme works at ph5. Figure 3b shows data on REACTION RATE vs. the effects of pH on peroxidase activity. The graph shows that the enzyme works at ph5 Figure 4a shows the slope of each plot, which represents the enzyme reaction rate for the effects of enzyme inhibition experiment. (ABSORBANCE vs. TIME) The enzyme did not work with the inhibitor. Figure 4a shows data on REACTION RATE vs. the effects of enzyme inhibition experiment.
How can you account for this observation? -There are catalase enzymes in your body and they break down the hydrogen peroxide into water and oxygen. The foam is the oxygen bubbles that form in the water. 7. Why is it important for organisms to regulate internal temperatures or metabolic processes at different temperatures?
PREDICTIONS 1. Sucrase will have the greatest activity at: pH 3 2. Sucrase will have the greatest activity at: 70˚ C 3. Sucrase activity: increases with increasing sucrose concentration MATERIALS AND METHODS Effect of pH on Enzyme Activity 1. Dependent Variable: amount of product (glucose & fructose) produced 2.
Controlled Variables. temperature; pH; sucrase + sucrose incubation time 4. Describe what is measured as an indicator of sucrase activity and why this is an indicator of sucrase activity. The amount of product produced is an indicator of sucrase activity. This is an indicatore because sucrase is an enzyme found in the small intestine that catalyzes the splitting of the disaccharide sucrose into the monosaccharides glucos and fructose.
It is known that chlorine is more electronegative than bromine, and thus chlorine is more reactive, and less discriminatory as to what it will react with, thus making bromine more “selective”. Another pertinent piece of information to look at would be stability. The stability of a free radical increases as the number of carbon substituents increases. Therefore, primary is the least stable and tertiary is the most stable. Also, the more stable the free radical that is left behind, the weaker its C-H bond strength will be.
Lab: Enzymes Experiment 1: Effect of pH on Enzyme activity Date Objective: To study the effect of pH on enzymatic activity. Material Required: 1. Catalase enzyme 2. H2O2 3. Scaled Beaker 4.
So, it makes sense that the speed of sound has the same order of magnitude as the average molecular speed between collisions. In a gas, it is particularly important to know the temperature. This is because at lower temperatures, molecules collide more often, giving the sound wave more chances to move around rapidly. At freezing (0º Celcius), sound travels through air at 331 meters per second (about 740 mph). But, at 20ºC, room temperature, sound travels at 343 meters per second (767 mph).Liquids:Sound travels faster in liquids than in gases because molecules are more tightly packed.