Psychrophiles - 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...

MIP 302 FINAL EXAM Lab VII: Define Eubacteria: - correct answer True bacteria Lab VII: Archaebacteria - correct answer ancient bacteria (can survive in extreme environments) Lab VII: Thermophiles - correct answer live in env. greater than 55 C or 131 F Lab VII: Hyper(super) thermophiles - correct answer live in high temp. env > 150 C or 300 F Lab VII: Psychrophiles - correct answer live in cold temp. 15 C or 59 F Lab VII: Acidophiles - correct answer live in...

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...

Micro (Allied Health) - Exam Review #2 Questions and Answers 100% Correct Micro (Allied Health) - Exam Review #2 Questions and Answers 100% Correct 1. A mesophilic bacterium could: A. reproduce at 37°C. B. produce human disease. C. grow at human body temperature. D. All of these are correct. - ANSWER-D. All of these are correct. 2. Most of the human pathogens are: A. psychrophiles. B. thermophiles. C. mesophiles. D. hyperthermophiles. - ANSWER-C. mesophiles. 3. An exampl...

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...

MICROBIOLOGY TEST QUESTIONS AND ANSWERS 100% D - correct answer Which of the following is a eukaryotic domain in the three-domain system? A. Archaea B. Fungi C. Bacteria D. Eukarya A - correct answer Who was the first to observe microorganisms with a microscope? A. van Leeuwenhoek B. Hooke C. Koch D. Pasteur E. None of the above B - correct answer These are the primary molecules making up membranes in cells: A. Proteins B. Phospholipids C. Nucleic acids D. Carbohydrates E....

Binary Fission Correct Answer Cell division in bacteria in which one cell divides into two cells Why do bacterial cells not undergo mitosis and meiosis? Correct Answer 1) Prokaryotic cells do not possess the machinery to produce spindle fibers and therefore cannot move chromosomes around in the cell 2) Replication of DNA in a prokaryote does not occur in one phase, but instead occurs continuously 3) Most bacteria have only one circular chromosome that is attached to the cell membrane Bac...

Microbiology Ch. 6 Questions And Answers. Microbes have very narrow optimum temperature ranges. Which of the following classifications of microbes are most likely to cause human disease, based on temperature requirements? hyperthermophiles thermophiles mesophiles psychrophiles - CORRECT ANSWER Mesophiles - The temperature range of mesophiles overlaps that of normal human body temperature, allowing the greatest growth. Which of the following statements accurately describes the cul...

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...