PPT-Transmission Of viruses Viruses are intracellular parasites and have to find a new host

The process of transfer of virus into host is referred as TRANSMISSION and this is an important step in the life cycle of viruses Person to person infections are said to be HORIZONTAL . M. acroparasites. & . M. icroparasites. CfE. . Advanced Higher Biology. Unit . 2: . Organisms and Evolution. SQA mandatory key area. Macroparasites. : . endoparasitic. amoebas, . platyhelminths. hyperinfestation. . and . diseases. Dr. . Md. . Fazlul. . Haque. Assistant Professor. Dept. of . Zoology. Rajshahi. . University. . Infestation. Infestation refers to the invasion by larger and complex parasites than . What ORGANSISMS CAN BE PARASITES?. JUST ABOUT ANY ORGANISM. What ORGANSISMS CAN BE PARASITES?. Remember our list of . MICRO-ORGANISMS = MICROBES. BACTERIA. VIRUSES. PROTOZOA (. protists. ). some. FUNGI. CfE . Advanced Higher. Unit 2 Organisms and Evolution. SQA . mandatory key information. Parasites tend to have a narrow niche as they have high host specificity and may lead to parasites which are degenerate. They are lacking in structures and organs found in other organisms. . Ammar. . Jusmani. / Clinical Microbiology . Ibn. . Sina. University for the Medical & Pharmaceutical Sciences. DEFINITION OF PARASITOLOGY. Parasitology. is the field of study of disease . Causing PATHOGENS that depend on hosts . EQ: Why are viruses considered to be non-
living?. Characteristics:. *Nonliving particles made of . nucleic acid. and a . protein coat . enlosed in a . capsid. shell... *In order to reproduce, all viruses must have a . Didinium. Experiments. Lotka. -Volterra Predation Equations. : . N. 1 . N. 2 . = Contacts . two . coefficients of predation,. . p. 1. . and. p. 2 . plus . r. 1. and . d. 2. . dN. 1 . /. dt. Dr. Al-Saghbini M. S.. MD. PhD. Pathology. Cyto. /Histopathology Consultant. Assistant Prof.. Autophagy. Is a process in which a cell eats its own contents. . It is a survival mechanism, when the starved cell lives by cannibalizing itself and recycling the digested contents. . Parasites are living things that use other living things - like your body - for . food (nourishment) . and a place to . live .. . You can get them from contaminated food or water, a bug bite, or sexual contact. . use many of the host cell’s biochemical mechanisms and products to sustain their viability. A mature virus(virion) can exist outside a host cell and still retain its infective properties.. . 3. the virus. 5. th. . Ed. . P.C. Beaver & . R.C. . Jung.. Medical Parasitology. Assistant Professor. Dr. Ahmed A. Mohammed. Medical Parasitology. Introduction and definitions. . . Type of relationships. BCH 4I4. LECTURE 7-9. Survey of structural properties of different classes of viruses . S.O Anadozie (Ph.D. .). VIRUSES. A virus is a small filterable and obligate intracellular parasite requiring a living host for its multiplication . Viruses are the most primitive microorganisms infecting man. . General properties. Obligate intracellular . Possess either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid), but never both . Smaller than bacteria, can be passed through the bacterial filters. Medical Parasitology. Prof. Dr. Ahmed Ali Mohammed. Introduction. Parasitology is the branch of biology concerned with the phenomenon of dependence of one living organism on another. Medical parasitology deals with the parasites which infect man, the diseases they produce, the response generated by him against them, and various methods of diagnosis, prevention and treatment..