These important questions are prepared by subject experts in such a way that students can understand the types of questions that will be asked in exam. Click here for Ebola virus disease Quiz, Click Start Quiz button to test your knowledge. Microbes are also used both in traditional food and beverage preparation. Microorganisms live in biosphere everywhere. You must sign in or sign up to start the quiz. They bypass important defenses of the body, B. Bacteria responsible for associated infections are usually susceptible to antibiotics, C. They predispose patients to viral rather than bacterial infections, D. They are used primarily in neonatal intensive care units, D. facilitating the growth of normal flora, A. mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines, B. it is a polysaccharide vaccine that does not confer long-term protection, C. the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time, A. Chicken Pox : Virus :: Malaria : ________, Hepatitis B can be avoided by ___________. You can also post relevant questions on this subject here. Microbes are also used both in traditional food and beverage preparation. Lost your password? Download a PDF of free latest Sample questions with solutions for Class 8, Science, CBSE- Microorganisms - Friend and Foe . Multiple Choice Questions - Bacteria, Virus etc. Cholera is a watre-borne diseasewhile others spread through air. Malaria caused by Plasmodium spreads through __________. Hence you can not start it again. You will receive a link and will create a new password via email. 8 in the test section the answer is wrong , the real answer is louis pasteur and not alexander flameing. Click here for, Here is a set of 10 questions quiz on Microbes, Your result has been entered into leaderboard. __________ is a plant disease caused by fungus. You will find microbes where there is liquid water, including soil, hot springs, on the ocean floor, high in the atmosphere and deep inside rocks within the Earth’s crust. Answer: Microorganisms are broadly classified in four groups: bacteria fungi protozoa algae Question 2. Science Class 8 Important Questions are very helpful to score high marks in board exams. The pathogens are made non-virulent by either weakening or killing them completely and then introduced into the body so that the body can easily create antibodies against the disease. © All right Reversed.Latest Interview Questions, A. See what users of Biology Questions and Answers have asked by clicking on each question link below. You have to finish following quiz, to start this quiz: _________ disease has been almost eradicated from the world. From the given list sort out useful and harmful actions of microorganisms. I would like to ask how about the growth pattern of the colonies as i … The possession of a segmented RNA genome, C. The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings, D. The ability of the Rotavirus to be transmitted faster, A. phagocytes have trouble moving on the plastic surface, B. phagocytes have trouble engulfing bacteria embedded in a biofilm, C. infected implants usually have to be surgically removed, A. EHEC secretes a Shiga-like toxin and EPEC does not, B. EHEC possesses a type III secretion system and EPEC does not, C. EPEC rearranges host cell actin and EHEC does not, D. EPEC passes through the placenta to infect the fetus and EHEC does not, B. live attenuated strains of all three immunological types, C. small dosage of wild-type live viruses, C. Inhalation anthrax and cutaneous anthrax are caused by separate strains ofBacillus anthracis, D. Inhalation Anthrax requires infection with a large number of spores, C. interfere with physiological processes in the body, A. precipitated by the use of certain antibiotics, B. have cell walls that contain a high content of mycolic acids, D. stay in the lung and rarely, if ever, enter the bloodstream, A. ADP ribosylation of adenylate cyclase that stops production of cAMP, B. ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP, C. cleavage of rRNA that results in disruption of ribosome function, D. ADP ribosylation of guanylate cyclase that stimulates production of cGMP, B. facilitating the growth of normal flora, C. blocking access and attachment of pathogens to mucosal surfaces, B. secrete LT (heat labile toxin) and ST (heat stable toxin) into the lumen of the intestine, D. activate T cells to proliferate and secrete cytokines, A. binds host cell receptors found on heart cells, B. cause ADP ribosylation of a factor involved in protein synthesis, C. forms cAMP that leads to fluid accumulation, D. lysis macrophages with the release of cytokines, A. an effective antibacterial when used in animals, B. an effective antibacterial when used in in-vitro cultures, C. an effective antibacterial both in animals as well as in in-vitro cultures, A. How to avoid spreading of Micro-organisms has been discussed. QUESTION I was thinking about ways of justifying practical balloon flight for a pre-industrial civilization, when I remembered that some microorganisms produce methane, and better yet, hydrogen. so many! __________ is introduced into the body during vaccination. Here you can get Class 8 Important Questions Science based on NCERT Text book for Class VIII. 4. You can also get complete NCERT solutions and Sample papers. Question: What method do the above words describe? This memory is retained for lifetime. Name the type of microorganism that is […]

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