Question

Chapel 1) Microorganisms are involved in each of the following processes a. infection. décomposition of organic material: C O2 production. d. food production. All of the above 2) The term used to describe a disease-causing microorganism is .a. microbe. b. bacterium virus. pathogen. e. infection. 3) What factors contribute to the rising incidence of antibiotic resistance (best answer)? a. overuse of the specific drugs b. misuse of the specific drugs c. random mutations in bacterial genomes d. random mutations, overuse and misuse of specific drugs overuse and misuse of specific drugs 4) Taxonomy: The formal system for classifying and naming organisms was developed by a Robert Koch b. Ignaz Semmelweis. C. Aristotle. . Carolus Linnaeus. e. Louis Pasteur. 5) A prokaryotic cell may possess each of the following cellular components EXCEPT a. flagella, O a nucleus. C. ribosomes. d. a cell wall. e. a cell membrane. 6) Which of the following is NOT associated with viruses? organelles 8. nucleic acid c. envelope ed. chemical reactions e. protein coat LED 7) Protozoan motility structures include a. cilia. b. flagella. c. pseudopods. d. cilia and pseudopods only. e cilia, flagella, and pseudopods. 8) Viruses are not considered living organisms because they O cannot reproduce by themselves. b. are structurally very simple. c. can only be visualized using an electron microscope. d. are typically associated with disease. e. are ubiquitous in nature. 9) Microbes that live stably in and on the human body are called the a. transient microbiota. human microbiome. c. pathogenic microorganisms. d. virulent microorganisms. e. opportunistic microbiota. 1 Page

Answer 1

O exemple Microbes cause infection Salmonella typhi - they decomp se organic molecules example - Pseudomonas aeruginosa Cyanobacteria produce crygen and micrbes are Involved in food production Charple Acetobacter aceho so correct option is @. Pathogen is the term for disease causing microbes Opblon ☺ ③. Comect option is a misuse and overuse of specific drugs by patients and random mutations in bacteria that make them resistant towards antibiotics. The resistant bacteria can spread the genes for resistance to other microbes and make them resistane towards antibro Hes. ③ The correct answer is Carolus Linnaeus - He is regarded as father of modern takenomy. 6 Correct answer is a rudeus: In prolongetes - nudeoid is present in the neidewild a 1 single circular double stranded DNA is in present the cell. It is without a membrane . The cutemptre nucleus is a membrane beund structure 0 Viruses have nucleic acid, protein coal- and envelope. They have no organelles CS Viruses with can carry Sranned with a only tow. few enzymes

to decode the instruction in their genetic material but virus can perform the reactions only when they enter a host , outside they cannot function. So virus will have reactions inside hast but they do not have ergenelles so ensues should be @ organelles I o Pridozoa have cilia, flagella and pseudepatice So answer is @. Flagellates exemple Giardia lamblia Clicada eng - Belantidium coli Amoeba is a famous pseudopodia bearing brot @ Correct answer in @ viruses cannot reproduce by themselves. Viruses can't bearing proto wan. independently they need a host for S that for that Viruses will exploit host machinery replication unlike other living organisms can reproduce on their own a organisms com on their - @ Human microbiome is the term I used for the microbiota that inhabits ! the human body. Example - € cali in human intestines. (Most & coll are harmless but some are pathogenic CS Cartin Png diarrhea. )