2014 Biology G Mr. Lee Identifying Amylase in Stomachs with pH Levels & Enzymes Problem: Does amylase continue to break down carbohydrates in the stomach? Prelab: Control Group: • Positive control: Saliva • Negative control: Water Constants: • The same amount of water, saliva, and HCI added to each circle. • Same sprays of iodine on each side of the paper. Hypothesis: If we add hydrochloric acid to saliva, then the acid will affect the pH of the amylase in saliva because hydrochloric acid is a very
The Effects of pH levels on the Growth of Fungi Introduction: Fungi is one of the six kingdoms in biology which resides under the Eukarya domain, differing from the Bacteria and Archae domains. The cell type for fungi is Eukaryote, meaning all cells with this cell type are membrane bound and have a nucleus. A nucleus is a control system for a cell that controls all activity. Although plants and fungi reside under the same domain, these are two different kingdoms with similarities and differences
Introduction The topic of Eutrophication is an environmental process that affects the chemical and biological properties of the water ecosystem. This topic was chosen as the investigation of this EEI, due of its harmful effects on the water’s ecosystem. Eutrophication The topic Eutrophication is defined by Schindler, 2006 “Eutrophication is characterized by excessive plant and algal growth due to the increased availability of one or more limiting growth factors needed for photosynthesis”. This
Acid rain which can also be called as acid precipitation or acid deposition is a type of precipitation that has a PH of about 5.2 or below which is unusually acidic for precipitation. Acid rain can come in many forms such as snow, rain, fog, hail and dust. As long as it contains unnatural amounts of nitric and sulfuric acids it can be considered as acid rain. Based on the PH value from 1 to 14, 7 is the neutral. A number below 7 indicate acidity which increases as the number decreases with 1 being
One must take samples from the river. To test the pH one would add a chemical indicator, The Universal indicator, to the sample and compare the colour change of the two to what a healthy water body’s pH should be. One can look at the ecosystems surrounding the water body to determine the health, these are biological indicators. If there a wide variety of organisms which are
Name: Gloria Makochieng Class: 9R Task: Research on the problems associated with acidity and then discuss how science has been applied to solve them. Acidity Acidity is measured using a pH scale. A pH scale measures the basicity or the acidity of a substance. The pH scale ranges from 0 to 14. Substances with a pH level measuring from 0 to 7 are said to be acidic. A lower pH means a higher acidity. Acidic compounds have a high concentration of hydrogen ions. Substances which have such properties
1. HOW TO MADE GOOD QUALITY COMPOST By making compost in a heap and to adjust the environment of the heap help to speed up the decaying of the natural fertilizer. By composting organic wastes such as mulch, leaves, manure and other natural stuff that can be broken down which is then used to fertilize and condition soil. It takes about 2 years for leaves to decompose in its natural habitat. The decaying of natural plant and manure can be from 14 days up to a year depending on the amount of human
event that has seen the decline of the majority of our mega fauna, loss of some amphibians, decline and extinction of several species of birds, human activities that are increasing carbon dioxide which is destroying our oceans and its life forms, and how fragmenting our forests are decreasing biodiversity. This report will both summarize and critique the ideas and works of Kolbert. As we are interconnected with our natural environment, our actions to
Chapter 1 INTRODUCTION Diesel engine is a very popular prime mover used for surface transportation, agricultural machinery needs and in industries. Diesel engines of more than 6.5 million units are being used only in the Indian agricultural sectors for different activities and the import of petroleum products is a major draw off on our foreign exchange sectors and with increasing demand in future years the condition is likely to become worse. Hence, it is an urgent need for a country like India
CHAPTER ONE INTRODUCTION 1.1 Background of the study Dengue is an arbovirus disease complex which includes dengue fever (DF) and dengue hemorrhagic fever (DHF) and its subsequent dengue shock syndrome (DSS). It is caused by four serotypes of dengue virus. A dengue virus infection may be asymptomatic or it may lead to undifferentiated viral fever syndrome, dengue fever, fever hemorrhagic fever or dengue shock syndrome. (World Health Organization 2003) The disease is often, though not exclusively