biology FOLIO BIOLOGY POLLUTION NIK ‘AINAA SYAKIRAH BT NIK GHAZALI 5 IBNU SINA INTRODUCTION Pollution is the introduction of contaminants into a natural environment that causes instability‚ disorder‚ harm or discomfort to theecosystem i.e. physical systems or living organisms. It can also be define as any undesirable changes in physical‚ chemical or biological characteristics of the natural environment‚ brought about when harmful substances or energy released by human activities. Pollution
Premium Air pollution Water pollution Pollution
Level and Advanced Level CHAPTERS CLASSIFIED:ENZYMES 9700/2 BIOLOGY Paper 2 Structured Question AS For year 2014 Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Answer all questions
Premium Enzyme
Life PowerPoint® Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero‚ updated by Erin Barley with contributions from Joan Sharp Copyright © 2008 Pearson Education‚ Inc.‚ publishing as Pearson Benjamin Cummings Overview: Inquiring About the World of Life • Evolution • Biology Response Evolutionary to the environment adaptation • Life is recognized by what livings things do • Biology consists of more than memorizing factual details
Premium DNA Eukaryote Organism
ATP. The free energy available in sugars drives metabolic pathways in cells. Photosynthesis and respiration are interdependent processes. Cells and organisms exchange matter with the environment. For example‚ water and nutrients are used in the synthesis of new molecules; carbon moves from the environment to organisms where it is incorporated into carbohydrates‚ proteins‚ nucleic acids or fats; and oxygen is necessary for more efficient free energy use in cellular respiration. These processes release
Premium Osmosis Photosynthesis Cell
Biology Lab Scientific Paper Down syndrome is a condition in which a person has an extra chromosome. Chromosomes are small “packages” of genes in the body. They determine how a baby’s body forms during pregnancy and how the baby’s body functions as it grows in the womb and after birth. Usually‚ a baby is born with 46 chromosomes but babies with Down syndrome have an extra copy of one of these chromosomes‚ chromosome 21. A medical term for having an extra copy of a chromosome is trisomy. Down syndrome
Premium Down syndrome
what antibiotics works and which do not. The chemical reaction of the bacteria is also important. Most antibiotics alter or inhibit protein structure‚ inhibit transcription‚ inhibit translation‚ affect cell membrane structure‚ or alter cell-wall synthesis (1). Bacterial resistance is another pertinent medical reason for identification. The evolution of bacterial resistance has made treatment of diseases much more difficult. Therefore‚ it is important to know the chemistry‚ structure‚ and resistance
Premium Bacteria Bacillus Microbiology
of greater moral consideration than all animals‚ or b) we must accept medical experimentation on humans. Is he right ? If so‚ why? The use of animals in scientific and medical research has been a subject of ethical debate for many years. Many animal rights groups and anti-vivisectionists believe that animal experimentation is cruel and unnecessary regardless of the purpose or benefit. Many individuals‚ such as Peter Singer‚ believe that because animals can experience the ability to suffer‚ they
Free Human Morality Animal rights
Coimisiún na Scrúduithe Stáit Scrúduithe Stáit State Examinations Commission State Examinations Commission Leaving Certificate 2012 Certificate 2012 Marking Scheme Scheme Biology Design and Communication Graphics Higher Level Introduction The marking scheme is a guide to awarding marks to candidates‟ answers. It is a concise and summarised guide and is constructed in a way to minimise its word content. Examiners must conform to this scheme and may not allow marks for answering outside
Premium Neuron Answer DNA
AP Biology Study Guide Chapter 11 1. Categorize chemical signals in terms of the proximity of the communicating cells. Local signaling – a. Paracrine signaling – a secreting cell acts on nearby target cells by discharging molecules of a local regulator (a growth factor‚ for example) into the extracellular fluid. b. Synaptic signaling – a nerve cell releases neurotransmitter molecules into a synapse‚ stimulating the target cell. Long distance signaling- c. Hormonal signaling – specialized
Premium Signal transduction
derived from pyruvate-‚ and the electron transport chain - moving electrons through a series of protein complexes to generate ATP (Reece‚ et.al‚ 2011). The process of cellular respiration occurs in the Cytoplasm and the Mitochondria in plants and animals. In this process‚ many more ATP molecules are produced compared to alcoholic fermentation which is a process that releases energy in glucose to generate ATP in the absence of oxygen. Aerobic respiration produces 38 ATP compared to 2 ATP of alcoholic
Premium Adenosine triphosphate Cellular respiration Citric acid cycle