PPT-M. Saadatian Cell structure

1 2 Peroxisomes Peroxisomes Membranebound organelles that contain specialized teams of enzymes for specific metabolic pathways all contain peroxideproducing oxidases Bound by a single membrane. OCR AS Biology. Unit 1: Cells, Exchange and Transport. Learning objectives. To understand and discuss the basis of cell theory based upon milestones in cell biology. To carry out practical work on cell size and magnifications using a light microscope. Where indicated, complete the statements by inserting the missing word(s) in the answer blanks.. You are miniaturized to the size of a small protein molecule and will travel in a . microsubmarine. , specially . A living thing. Cell. The basic unit of structure and function in living things. Unicellular. Made of a single cell. Multicellular. Consisting of many cells. Stimulus. A change in an organism’s surroundings that causes the organism to react. THE DISCOVERY OF CELLS. In 1665, Robert Hooke began a series of observations using a microscope. Although he was not the inventor of the microscope nor the first to use it, he was the first to describe the basic unit of life, the cell.. . Cell Structure. Enormous variety in the size and shape of different cells. Smallest cells belong to group of . organisms. . Mycoplasma. Only about 0.2 µm in diameter. So small that often beyond the limit of resolution of light microscopes. Cell/Developmental Biology I. Group Members. Kelly Hogan, Facilitator . Rita Graze. Matthew . Kearley. . Zheng-Hua. Ye. Xiaoyu. Zhang. Christine Sestero. Heather Tinsley. Learning Goal: . Understand . Dolgushin. Harvard SIG 2013. History of Cell Theory. . CITOLOGY. . (. cito. - and –logos-. ) – . the science about the cell. Hooke. , Leeuwenhoek, Schleiden, Schwann, . Virchow. All living things or organisms are made of cells and their . Where is the genetic material in a prokaryotic cell?. In a bacterial DNA loop and there may be one or more plasmid rings.. 2. Where is the genetic material in a eukaryotic cell?. The DNA is in chromosomes enclosed in a nucleus. . Structure. Main component is phospholipids that are arranged in a double layer (. bilayer. ). Has scattered proteins within the phospholipids. Regulate what enters/leaves cell. Function . Nucleus. Structure. 1. MEIOSIS AND SEXUAL LIFE . CYCLES. Heredity. = Continuity of biological traits from one generation to the . next. Variation. = Inherited differences among individuals of the same . species. Genetics. &. Ecological pyramids. 1. Food chain . &. Ecological pyramids. Important facts about food chains. In a food chain each organism obtains energy from the one at the level below.. Plants are called . 1. Ecological factor in . ecosystem. Ecological factors:. Climate factor (sunlight, . temprature,water,wind. . Edaphic. factors (Soil). (mineral nutrition, . acidity). Topography factors. (gravity, altitude, scope. 1. Cellular respiration. Cellular respiration and fermentation. Fermentation = An ATP-producing catabolic pathway in which both electron . donors . and . acceptors are organic compounds.. • Can be an anaerobic process. 1. Soil pollution . SOIL POLLUTANTS. Plastics. Agro chemicals. Fertilizers. Heavy metals. Plastics. Major part of global domestic and industrial waste. Not easily biodegraded. Waste plastic accumulates much thus adds to severe pollution problem.