Study guides, Class notes & Summaries

Straighterline Microbiology Exam 4 Questions and Answers Microbial control methods that kill/destroy __________ are able to sterilize. - Answer️️ -endospores Sanitization is a process by which - Answer️️ -the microbial load on objects is reduced. An example of an agent that lowers the surface tension of cells is - Answer️️ -alcohol High temperatures _______ and low temperatures _______. - Answer️️ -kill cells, inhibit cell growth Microbe(s) that is/are the target(s) of pa...

Microbiology Straighterline (Quizzes) 100% Correct Solved Studies by Emil von Behring and Shibasaburo Kitasato demonstrated that inactivated toxins can induce the synthesis of antitoxins in the blood of rabbits. These antitoxins (antibodies) are the basis of... a. humoral immunity b. cell-mediated immunity c. antibiotic immunity d. phagocyte-mediated immunity - Answer️️ -a. humoral immunity Who of the following first discovered that some blood leukocytes could engulf disease- causi...

STRAIGHTERLINE MICROBIOLOGY EXAM QUESTIONS AND ANSWERS Cell walls are not typically possessed by ______. - Answer️️ -protozoa The two major groups of helminths are the ______ and the ______. - Answer️️ - roundworms; flatworms Which of the following is not true of conjugation? a. Involves direct contact between cells b. Transfers genes for drug resistance c. Transfers genes for enzymes and adherence molecules d. Involves the action of bacteriophage e. The donor retains a copy of...

Straighterline Micro 250 final prep Questions and Answers Which class of eukaryotic microorganisms can be subdivided into groups such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa? A. Helminths B. Algae C. Protozoa D. Fungi - Answer️️ -Protozoa Genetic material can be excised from one chromosome and directly integrated into another via A. conjugation. B. transformation. C. transduction. D. transposons. - Answer️️ -transposons. Which immune cell secretes numerous c...

Bio 250 straighterline test 1 prep Questions and Answers Organisms called parasites are ______. Select one: a. always harmful to their host b. the decomposers in ecosystems c. always viruses d. free-living - Answer️️ -always harmful to their host Trees of life that illustrate the phylogenetic relationships of all organisms were traditionally based on ______; newer methods for determining phylogeny rely on ______. Select one: a. morphology; nucleic acid sequences b. nucleic acid ...

Straighterline Microbiology Midterm Exam Questions and Answers An organism with a temperature growth range of 45°C to 60°C would be called a(n) ______. a. extremophile b. thermophile c. psychrophile d. facultative psychrophile e. thermoduric microbe - Answer️️ -b. thermophile An organism that cannot tolerate an oxygen environment is a(n) ______. a. aerobe b. obligate aerobe c. facultative anaerobe d. microaerophile e. obligate anaerobe - Answer️️ -e. obligate anaerobe Wh...

StraighterLine BIO250 - Microbiology Final Exam Study Guide with Complete Solutions What is a Transforming Infection? - Answer️️ -Virus that alters cell DNA, leading to cancer What is a lysogenic infection? - Answer️️ -Phage DNA is incorporated into host genome and is passed on to subsequent generations What is a Lytic Bacteriophage Infection? - Answer️️ -Host cell gets so packed with viruses that is lyses (splits) open and releases mature virions What are the three principle...

final exam straighterline microbiology Questions and Answers In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? - Answer️️ -Nitrogen Fixation If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OH- concentration of the solution? - Answer️️ -10-8 M Fungi are able to reproduce asexually by creating conidiospores...

Microbiology StraighterLine unit 1 Questions and Answers Microorganism - Answer️️ -Organisms too small to be seen by the naked eye Less than 1mm Unicellular If multicellular thay lack different tissues acellular microorganisms - Answer️️ -viruses -protein and nucleic acid, viroids - RNA satellites -nucleic acid with a protein shell prions- protein Cellular microorganisms - Answer️️ -fungi - yeast molds protists - algae, Protozoa, slime molds bacteria -E Coli archaea - me...

microbiology final straighterline exam questions and answers The study of evolutionary relationships among organisms is called ______. - Answer️️ -phylogeny The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______. - Answer️️ -Last Universal Common Ancestor Organisms called parasites are ______. - Answer️️ -always harmful to their host Which of the following does not indicate microbe involvement in energy and nutrient flow? - Answer️️ -Th...