Question

Define terms . Explain concept or process binary fission, generation, generation time, disinfection, antisepsis, sterilization, aseptic, degerming, sanitization, pasteurization, non- ionizing and ionizing, surfactants, lag phase, exponential (log) phase, stationary phage, death phase, pyrimidines, antimicrobial, bacteriostatic, bactericidal, bacteriolytic, fastidious, mannitol salt agar, blood agar How to teichoic wall proteins, m-proteins and mycolic acids add to an organism virulence? (last week) • Describe binary fission Name where, and explain why, on the bacterial growth curve microbes are: Most virulent, most difficult to harm/kill, most likely to form endospores. Understand why bacteria can only grow in a given range of temperatures. Have a vague idea of the optimum temperature for me: les, thermophiles and psychrophiles. What tricks do organisms use to grow at hot temperatures and cold temperatures. Explain how differential agar works Bacteriostatic vs bactericidal vs bacteriolytic • non-ionizing vs ionizing radiation • Gamma vs Alpha vs Beta Hemolysis Solve a word problem (without a calculator) to calculate the final populations size of bacteria using this equation: NAN.(2"). Convert between m>mmum . Compare and contrast . Explain Draw Apply your knowledge Explain the following Draw a bacterial growth curve and label (and describe) the four stages of life. How do you use the following in your life: alcohol, phenols, detergents, oxidizing agents, heavy metals, halogens, aldehydes, heat, pasteurization, non-ionizing and ionizing, surfactants, pyrimidines, Microbes: (what diseases do these microbes cause?) Escherichia coli (What is the generation time? Serratia marcescens (red colonies, urinary tract infection) Salmonella typhi (and the story of Mary Mallon) Helicobacter pylori Mycobacterium tuberculosis (mycolic acids, 12 hr gen time) Clostridium botulinum, Clostridium tetani, Clostridium difficile (how and why do all of the Clostridium species use endospores?)

Answer 1

Binary fission is a mode of asexual reproduction in which the body of the organisms separates into two new bodies.

Generation is the entire body of individuals born and living at about the same time

Generation time can be defined as the average time between two consecutive generation in a lineages of a population.

Disinfection may ne defined as cleaning an article of some or all of the pathogenic organisms which may cause infection

Antisepsis is a process of removing the number of viable microbes from any living surface to an extent that the infection can be hardly produced.

Sterilization is a orocess by which all forms of the microbial life from the surface, medium and instruments are destroyed by various physical and chemical methods like auto claving, boiling etc.

Aseptic is a condition where all the pathogenic life is destroyed. It is a technique refers to a procedure that is performed under sterile condition.

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