Endospores - Study guides, Class notes & Summaries

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...

Sterile Correct Answer-Is an item free of microbes including endospores, but does not consider prions Sterilization Correct Answer-The removal or destruction of all microorganisms Commercial Sterilization Correct Answer-Conditions achieved by application of heat which renders food free from microorganisms capable of growing in the food at temperatures at which the food is likely to be held during distribution and storage. Commercial Canning Process Correct Answer-• Uses industrial-siz...

Decontamination - ANSWER Is the mechanical removal of most microbes from an animate or inanimate surface. Bacterial Endospores - ANSWER Bacterial endospores most resistant - usually require temperatures above boiling Vegetative Cells - ANSWER A cell that grows and divides under optimal conditions. Disinfection - ANSWER Destroys most microbial life, reducing contamination on inanimate surfaces- (not endospores) Sterilization - ANSWER Is the destruction of all microbial life. Antise...

Axenic Correct Answer-pure culture Biogeochemical Cycling Correct Answer-Microbes play a role through: harnessing light energy, degrading dead plant and animal matter (including recalcitrant substrates), promote plant growth, fix nitrogen gas, oxidize inorganics, metabolize toxic products Phototrophs Correct Answer-obtain energy from sunlight Heterotrophs Correct Answer-obtain energy from organic compounds Lithotrophs Correct Answer-obtain energy form inorganic compounds Endospore...

IBEC Electrology, Laser, and IPL Exam Questions and correct answers, with complete solution. 2024. What is melanin? Gives our skin its color. What is keratine? Gives skin a yellow undertone. What is another name for the dermis? True skin or Living layer What is the stratum corneum? Over most layer. Protects and sheds What is the stratum lucidum? Only found on our palms and soles. Lets light through. What is the stratum granulosum? Helps the cells die. What is the stratum spinosum?...

The sum total of all the microbes in a certain environment is termed the______ Select one: a. biofilm b. microbial niche c. microbiome d. phylogeny e. domain: Microbiome 2. Studies of the immune response to an infection caused by microorganisms would be performed by a/an _______. Select one: a. hypersensitivity specialist b. geomicrobiologist c. epidemiologist d. immunologist: Immunologist 3. Which of the following is NOT a recent discovery that has had a huge impact on the under...

Exposure to 63℃ for 30 minutes or 72℃ for 15 seconds are recognized ways to ________. Correct Answer-pasteurize You observe that you can kill 1 × 106 C. botulinum endospores in 3.0 minutes by heat treatment at 121℃. What is the decimal reduction time (D121 value)? Correct Answer-30 sec Which of the following types of microbes would be most resistant to killing by germicides? Correct Answer-bacterial endospores The use-dilution test and Kelsey-Sykes capacity test are methods desig...

What is bacitracin? - A component of antibiotic ointments What are signs of an allergic reaction? - cracking, bleeding, excessive swelling, bumps, dry skin, oozing pain, itchy skin, raise blisters, scabbing, burning, tender to touch, refuses to heal. What is sanitizer? - an agent that reduces the number of microorganisms on a surface ex. countertops, sinks, door knobs / cavi wipes What is a disinfectant? - stronger chemical that destroys bacteria on objects that are not living ex. window c...

TCDHA Microbiology Quiz 1 Questions and Answers All Correct Give two examples of a eukaryotic microorganism. - Answer-yeast, grass, trees, plants, animals Give an example of a prokaryote. - Answer-bacteria Describe characteristics of both eukaryotic and prokaryotic microorganisms. - AnswerEukaryotes are complex cells with internal membranes (has a nucleus) Prokaryotes are primitive cells with internal membrane (no nucleus) Girolamo Fracastoro - Answer-catching diseases (1500s) Antoni V...

Wet mount Correct Answer-A slide preparation technique where a specimen is placed on the slide with a drop of liquid Darkfield microscopy Correct Answer-Type of microscopy where a bright image is seen on a dark background Brightfield microscopy Correct Answer-Type of microscopy where a dark image is seen on a bright background Phase contrast microscopy Correct Answer-Type of microscopy where higher contrast and higher-definition images are produced Gram stain Correct Answer-A differe...