Aerobic microbes - Study guides, Class notes & Summaries

Nitrogen is a growth Limiting nutrient for many organisms because -only a few microbes can extract it from the atmosphere, but all organisms require if for amino acid and nucleotide synthesis An organism that tolerates high _ is called a halophile - Salt concentrations What tests are used to help identify bacteria today? - All of the above all of the following are used to protect organisms from the toxic by products of oxyge n EXCEPT - protease A metabolic pathway - All the above are true ...

Prescott's Microbiology, 11e (Willey) Chapter 1 The Evolution of Microorganisms and Microbiology 1) Extant microorganisms are organisms from the fossil record that are no longer present on Earth today. Answer: FALSE Topic: Taxonomy of Microorganisms Bloom's/Accessibility: 2. Understand / Keyboard Navigation ASM Topic: Module 01 Evolution ASM Objective: 01.05 The evolutionary relatedness of organisms is best reflected in phylogenetic trees. Learning Outcome: 01.02a Propose a timeline of the ori...

Chain of Infection - ANSWER-1)Infectious agent= organism with ability to cause disease; greater virulence, invasiveness, and pathogenicity => increased odds of infection 2) Reservoir: place where microbes can persist and reproduce 3) Portal of Exit: way for microbe to leave the reservoir 4) Mode of transmission: method of microbe transfer from one place to another 5) Portal of entry: opening that allows microbe to enter host 6) Susceptible host: Lacks immunity or physical resistance to p...

BIOD 171 Portage Learning Final EXAM Questions and Answers 100%Correct/Exam 1-7 2023/2024 UpdatePortage Learning BIOD 171 Final EXAM Questions and Answers 100%Correct/Exam 1-7 2023/2024 Update True or False: A virus is considered a microorganism. False. Viruses are not living and as such are not considered microorganisms. Viruses can, however, be classified as microbes, a more general term that includes microorganisms and viruses. 1. What is the smallest biological unit of life? A cell. ...

What bacteria inhabit extreme environments? correct answers often archaebacteria, or "ancient" bacteria How does archaebacteria differ from eubacteria or "true" bacteria? correct answers they differ in cell wall and cell membrane composition, ribosome composition and shape, tRNA structure and RNA polymerase sequences What are thermophiles? correct answers bacteria that inhabit environments with elevated temperatures What are hyper or super thermophiles? correct answers bacteria that...

Microbiology Exam 2 chapters 6, 7, 8, and 9 2023 Microbial Growth - Answer-The increase in numbers of microbes resulting in a discrete colony Heterotrophy - Answer-Eat food. They acquire carbon from organic molecules Autotrophy - Answer-Make food. They make carbon from inorganic CO2 Obligate anaerobe - Answer-Oxygen is deadly to them. They lack the enzyme to neutralize oxygen. Obligate aerobe - Answer-They require oxygen for survival Facultative anaerobe - Answer-Can grow with or with...

Final exam Straighter line microbiology 100% SOLUTION 2023//2024 In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? - ANSWER 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 OHconcentration of the solution? - ANSWER 10-8 M Fungi are able to reproduce asexually by creating conidiospores and spo...

Which major body sites are heavily colonized by microbes? Are you born with these microbes? correct answers Exposed skin, oral cavity, and gastrointestinal tract are heavily colonized by microbes. Humans are not born with any microbes, colonization begins at birth via exposure. What are the common genera of bacteria found on the skin, in the throat, and in the intestines? correct answers The common bacteria found on the skin: Staphylococcus, Propionibacterium, and Corynebacterium. The comm...

CMMB 343 lab Exam with 100% Correct Answers | Verified | Latest 2024 Version How to do BHI stant How to interpret results? Slanted BHI agar in a test tube Inoculate with the sample Will see growth on surface of agar if aerobic microbe. Fissures and cracks below surface if able to ferment. Deep shake culture Innoculate a loop of sample in molten agar and rotate in hands to mix. If fissures below the surface, can ferment. If no fissures, cannot ferment. Thioglycollate Medium Pipette som...

CHAPTER 3—ECOSYSTEMS: WHAT ARE THEY AND HOW DO THEY WORK? MULTIPLE CHOICE 1. Scientists estimate that tropical rain forests contain up to half of the earth’s land plants and animal species. What percentage of the world’s land surface do tropical rain forests cover? a. 2 b. 4 c. 8 d. 10 e. 12 ANS: A PTS: 1 TOP: 3-0 Core Case Study: Tropical Rain Forests Are Disappearing KEY: Bloom's: Remember NOT: New 2. The disappearance of the tropical rain forests is an import...