Observations made that constituted a positive (+) for inotropic effect were signs of increased force in regards to the heart muscle contracting. Likewise‚ a negative (-) inotropic effect was noted for signs of less forceful contractions of the pig heart. A positive chronotropic effect was denoted by an increase in heart rate‚ and conversely a negative chronotropic effect was observed by a decrease in overall heart rate shortly after the drugs were administered. Discussion: The results obtained
Premium Cardiac muscle Muscle Heart
Introduction In this experiment‚ to measure residency effect in crickets‚ the experimental organism is the house cricket‚ Acheta domesticus which is native to southwestern Asia but lives commonly in the eastern side of the United States (Ghouri 1961). I hypothesize that a residency effect will take place when a “intruder” male is placed in the container of a resident male‚ causing the cricket who owns the territory to fight more aggressively and remain dominant over that area. The independent variable
Premium Plant Cricket Scientific method
the stroop effect. It was this type of research that inspired others and prompted them to conduct research of their own in this area of study‚ and that is exactly what was done for this laboratory experiment as well. The overall hypotheses for this experiment were‚ as expected‚ conclusive with the results‚ however‚ there was a discrepancy in the hypothesis of experiment two. The comprehensive hypotheses for this experiment were that in each experiment‚ there would be a significant effect in reaction
Premium Stroop effect Psychology John Ridley Stroop
PROCEDURE: Part A (Effect of temperature on growth) 1) 15 tubes of glucose broth are provided and one set of 3 tubes are inoculated with each of the following cultures; Escherichia coli‚ Pseudomonas fluorescens‚ Micrococcus luteus and Saccharomyces cerevisiae. The last served as control. 2) One of the three tube of each culture is incubated at each of the following temperature: * 4°C * 37°C * 55°C 3) All the tubes are incubated within 5 minutes after inoculating. The turbidity
Premium Bacteria
The effect is named after John Ridley Stroop‚ who published the effect in English in 1935 in an article entitled Studies of interference in serial verbal reactions that includes three different experiments.[1] However‚ the effect was first published in 1929 in German‚ and its roots can be followed back to works of James McKeen Cattell and Wilhelm Wundt in the nineteenth century.[2][3][4] In his experiments‚ J. R. Stroop administered several variations of the same test for which three different
Premium Psychology Stroop effect Perception
Omar Shbeeb Toothpick Enzyme Lab 9/25/13 Introduction Enzymes are used in all metabolic reactions to control the rate of reactions and decrease the amount of energy necessary for the reaction to take place. They are responsible for the thousands of chemical interconversions that sustain life. Enzymes are referred to highly selective catalysts‚ meaning they speed up the rate of metabolic reactions. To react‚ they need to find a perfect match with a substrate. They converge at a place called an
Premium Enzyme Chemical reaction
Investigating the effect of pH on amylase activity Aim The aim of the experiment is to determine the effects of different pH and the rate of reaction on fungal amylase and starch. Introduction The enzyme amylase is found in the human body‚ it catalyses the hydrolosis of internal glycosidic bonds in polysaccharides‚ the breakdown of starch into sugars. Amylase is present in human saliva‚ where it initiates the chemical process of digestion. Enzymes work best at an optimum pH of 7 which
Free Enzyme Starch Glucose
Ayaan Nadeem SBI 4UO-A Tuesday‚ February 27‚ 2013 Ms. Balmer Pineapple Jelly Enzyme Lab Discussion After completing the Pineapple Jell-O Enzyme lab‚ the final results were that the canned pineapple formed the jelly while the fresh pineapple did not. Pineapple In order for this to have occurred‚ there has to be a comparison between fresh and canned pineapple in terms of their physical and chemical properties. The physical properties of fresh pineapple are that it is sweet‚ ripe and raw.
Premium Vitamin C Fruit Immune system
THE EFFECT OF TEMPERATURE ON CATALASE RESEARCH QUESTION: What is the effect of various temperatures‚ 0°C‚ room temperature‚ 37°C‚ 50°C‚ 60°C‚ on the number of oxygen gas bubbles liberated‚ in a decomposition reaction between the enzyme Catalase‚ obtained from crushed mung beans‚ and 2% of the substrate Hydrogen Peroxide? INTRODUCTION: Enzymes are biological catalysts that increase the rate of chemical reactions without they themselves being involved in the reaction itself. Enzymes are proteins
Premium Hydrogen peroxide Oxygen Catalase
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. Enzymes are catalyst for biochemical reactions; Enzymes lower the activation ATP so a reaction can begin over the energy barriers. In this lab‚ a discussion of the enzymes reaction to heat will be addressed. Does heat speed up the enzyme reaction? The prediction is as more heat is applied more reactions will occur then at some point the heat will denature the enzyme as it reaches
Premium Enzyme Chemical reaction Catalysis