Mesophiles - Study guides, Class notes & Summaries

Define the term Microbiology - The study of microorganisms and their relationships to the environment, humans and animals in disease Name the 5 classifications of microorganisms - Bacteria, Virus, Mycobacterium, Fungi, Parasites Blood agar is the most commonly used media in the clinical laboratory. What type of media is blood agar? - Enriched media, Differential media (detection of Beta-hemolytic organisms) List some agars that are generally used in stool cultures and what type...

What do all cells have in common? - DNA, RNA, Proteins & Enzymes, Cell Membrane, ATP (energy) What do eukaryotes have that prokaryotes don't? - nucleus, organelles, RNA processing what bacteria grows best below 20 degrees? - psychrophiles what bacteria grows best between 20-50 degrees? - mesophiles what bacteria grows best over 50 degrees? - thermophiles and hyperthermophiles what is an example of an acidophile? - helicobacter pylori: causes peptic ulcers, and if left untreated, gastric c...

Micro-Biology The study micro organisms (nature, life and action) Bacteria Size 1 or 2 microns Flagella Enables movement (Whip like tails) Protoplasm All materials floating in a cell capsule Cell Membrane a thin semi-permeable membrane that surrounds the cell's cytoplasm, enclosing its contents Cocci Round shape bacteria. Occurs in pairs, chains, or clusters. (exp. Staphylococcus) Bacillus Rod shape. Small stick like rods or large brick like rods...

Obligate halophiles - High osmotic pressure aka lots of salt like the great salt lake Facultative halophiles - Type that causes acne can be in salty also known as osmolaric but not nessesary Neutrophiles - Most bacteria Protozoa and pathogens like neutral ph rang 6.5-7.5 Acidophiles - Really acidic as low as 0 pH Alkalineophiles - Grow best in basic range up to 11.5 ex cholera Thermophiles - Higher temperatures above 45C ex hot springs Hyperthermophiles - Hottest 80C and above Mesophiles...

Which of the following forms of oxygen is detoxified by the enzyme catalase? A) singlet oxygen B) hydroxyl radical C) hydrogen peroxide D) superoxide E) Oprah's oxygen network C) hydrogen peroxide A microbiologist inoculates a growth medium at Time 0 with 400 bacterial cells per mL. If the generation time of the species is 30 minutes, and there is no lag phase, what is the shortest incubation time before the culture reaches a population of more than 6000 cells per mL? A) 1 hour B...

HACCP Certification Practice Questions with Complete & Updated Solutions There are ___ principles of HACCP A) 5 B) 4 C) 7 D) no principles just rules - Answer ️️ -C Critical Control Points (CCPs) are steps in a production process in which loss of control may result in an unacceptable health risk True or False - Answer ️️ -True Which of the following are considered pre-requisite program A) GMP B) SSOP C) Pest Control Program D) All of the above - Answer ️️ -D A bacteria...

MICROBIOLOGY EXAM 1 - CHAPTERS 1,3,4,7 & 8 WITH COMPLETE SOLUTIONS 100% Each of the following organisms would be considered a microbe EXCEPT: a. yeast b. protozoan c. bacterium d. mushroom e. virus - correct answer d. mushroom The term used to describe a disease-causing microorganism is: a. microbe b. bacterium c. virus d. pathogen e. infection - correct answer d. pathogen In the name Staphylococcus aureus, "aureus" is the: a. genus b. domain name c. species d. kin...

thermal disinfection - correct answer What type of disinfection uses heat to kill all microorganisms with the exception of spores? Antiseptic - correct answer What type of solution inhibits the growth of bacteria and is typically used topically only on animate objects? Mesophiles - correct answer ____________ are often pathogenic to humans because they grow best at body temperature. Brushing should be done under water - correct answer What technique should be used for brushing i...

Microbial Growth - Increase in number of cells, not cell size - There are Populations and Colonies What are the 2 requirements for growth? 1. Physical requirements 2. Chemical requirements What are the physical requirements for growth? Temperature pH Osmotic pressure What are the chemical requirements for growth? Carbon Nitrogen, sulfur, and phosphorous Trace elements Oxygen Organic growth factor How does temperature affect growth? - Every bacteria has an optimal growth temperature - Tempera...

MIC 205 Exam 3 Questions with All Correct Answers Psychrophiles - Answer-cold-loving microbes Mesophiles - Answer-those growing best between 20 degrees and 40 degrees celcius; the human pathogens are in this group Thermophiles - Answer-heat loving microbes minimum growth temperature - Answer-the lowest temperature at which the species will grow optimum growth temperature - Answer-the temperature at which the species grows best maximum growth temperature - Answer-the highest tem...