Defn:Dengue Haemorrhagic Fever(DHF) are acute febrile diseases transmitted by mosquitoes‚ which occur in the tropics‚ can be life-threatening‚ and are caused by four closely related virus serotypes of the genus Flavivirus‚ family Flaviviridae.It was identified and named in 1779. It is also known as breakbone fever‚ since it can be extremely painful. Causative Agent: . Dengue is transmitted to humans by the Aedes (Stegomyia) aegypti or more rarely the Aedes albopictus mosquito. The mosquitoes that
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process information locally or convey information from one region of CNS to another • Types: a. Local interneurons/ internuncial neurons/ local circuit neurons – short axon Golgi type II (greatly outnumber type I in CNS) b. Relay/ principla/ projection neurons – long axon Golgi type I - Wide variation in size and infinite variety in arrangement of processes of neurons but similar structure when located in a given region |Bipolar neurons
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` Study Guide for Exam 1 Chapter 1: 1. What is a “microbe”? What groups of organisms are included in this category? Microbes (microorganisms) are minute living things that individually are too small to be seen with the unaided eye the group includes bacteria‚ fungi‚ protozoa‚ and microscopic algae‚ viruses Only minority of microorganisms are pathogenic(disease-producing) 2. What are some of the benefits provided by microbes? Decompose organic waste‚ producers in the ecosystem
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The cell is the fundamental structural unit of all living organisms. Some cells are complete organisms‚ such as the unicellular bacteria and protozoa; others‚ such as nerve‚ liver‚ and muscle cells‚ are specialized components of multi-cellular organisms. Cells range in size from the smallest bacteria-like mycoplasmas‚ which are 0.1 micrometer in diameter‚ to the egg yolks of ostriches‚ which are about 8 cm (about 3 in) in diameter. Although they may differ widely in appearance and function‚ all cells
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structure and function of the animal and plant cell structures and organelles in class Know the following organelles and cell structures: Cell wall‚ cell membrane‚ nucleus‚ mitochondria‚ chloroplasts‚ ribosomes‚ endoplasmic reticulum‚ golgi apparatus‚ lysosomes‚ vacuoles‚ cytoskeleton What is an allele? Be able to define the following: Genotype‚ Phenotype‚ Transcription‚ Translation Know the steps involved in transcription and translation What are mutations? How do they lead to evolutionary
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SNC2D0 Exam Review BIOLOGY: Cells‚ Tissues‚ Organs and Organ Systems 1. Compare and contrast the following terms: a) Endoplasmic reticulum and golgi apparatus b) Mitochondria and nucleus c) Cell wall and cell membrane d) Cell cycle and mitosis e) Cell cycle and cancer f) Tissue and organ system g) Digestive system‚ circulatory system‚ and respiratory system h) Root system and shoot system i) Phloem and xylem vessel 2. On a separate piece of paper‚ draw a labeled diagram of an animal
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He discovered that by soaking brain tissue in a silver chromate solution‚ now called the Golgi stain‚ a small percentage of neurons became darkly colored in their entirety. The Golgi stain shows that neurons have at least two distinguishable parts: a central region that contain the cell nucleus (cell body or soma)‚ and numerous thin tubes (neurites) that radiate away from the central
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THALLUS ORGANIZATION Unicellular Habit Motile form-with flagella Ex.Euglena Non-motile form-w/o flagella Ex.Gloeocapsa Colonial Habit Indeterminate- unlimited aggregates of cell division Determinate-aka Coenobium‚ division is at a fixed rate Filamentous Habit Simple unbranched –cells are capable of cell division‚ growth‚and reproduction Branched-cell division and growth are restricted to the end cells (Cladophora). Growth due to cell division of meristem is called Trichothallic
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of nucleotides takes place while RNA is being transcribed. True or False 10. This organelle is responsible for ATP production and fatty acid oxidation. a) Rough endoplasmic reticulum b) Smooth endoplasmic reticulum c) Mitochondria d) Golgi apparatus e) Nucleus 11. Which of the following is FALSE about RNA Splicing? a) Exons are removed from the newly synthesized RNA and introns are stitched together. b) The process involves small nuclear RNA molecules c) snRNPs play a significant
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These questions were assembled from a variety of sources over the past 3 years. While it is not possible to thank everyone I would like to acknowledge the TAs and the study leaders for residence students. Some questions are simple but all are meant to help your organize your studying NOT to provide answers. Study in a group to test each other. For T‚F or multiple choice questions or short answer questions: once you have answered‚ provide a short explanation of your reasoning. ANSWERS CAN BE
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