A pure culture contains - Study guides, Class notes & Summaries

A pure culture A) is sterile. B) is a population of identical cells. C) is made of a precisely defined chemical medium. D) contains one microbial cell. correct answers b Microbial cells first evolved on Earth approximately ________ _______ years ago. A) 1.6 to 1.8 million B) 7.0 to 7.2 million C) 3.8 to 3.9 billion D) 10.5 to 11.5 billion E) None of the above correct answers c Predict how Pasteur's conclusions on spontaneous generation with swan flasks would have changed if he w...

ANTH 1120 Midterm Review Questions and Answers Terms: Nature: Inspired by Charles Darwin (theory of evolution): – the belief that behaviors including intelligence are biologically based. Nurture: • Margaret Mead’s research debunked that theory. • Identities are NOT biologically based but are learned and cultivated through socialization • Identity is always produced in the course of social interaction Anthropological Skills (toolkit) ; Our ability to conduct qualitative res...

Straighterline Microbiology Final Exam 2024/2025 Questions with 100% Correct Answers A diagnosis of tuberculosis involves a/an... - chest X-ray, acid-fast stain of sputum, sputum culture, tuberculin skin test A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding from the Last Universal Common Ancestor would show Archaea - branching off the Domain Eukarya. A group of protozoa that are not motile are the... - Plasmodium sp. A mutation that changes a normal codon ...

BI 234 CULTURING METHODS (EXAM 1) QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED Five I's I. inoculation II. incubation III. isolation IV. inspection V. identification inoculation producing a culture medium nutrient substance used for microbial growth broth a liquid medium that allows growth throughout agar gelatinous, yet firm medium, isolated from algae streak plate spreading microorganisms across the surface of agar pure culture population of cloned cells descende...

Final exam Straighterline microbiology questions and answers already passed In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? 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? 10-8 M Fungi are able to reproduce asexually by creating conidiospores and sporan...

Microbiology Lab Exam # 1 Questions and Answers Considering the cultures used to inoculate each medium in this exercise, how many different microbial types should you expect to see in/on each medium? (1.4) -Answer- You should only have 1 if using good sterile technique. A successful aseptic transfer will have only micrococcus lutes growth- this would be a pure culture You were asked to describe differences in appearance of growth in each culture, if present. In which medium was this the mo...

Uark microbiology lab practical 1 rated A Coccus A spherical bacterium. Bascillus Rod shaped bacteria Spirillum A spiral-shaped bacterium. Uses of good bacteria on our bodies, in yogurt, and can be used to clean up oil and radiation colony visible mass of cells Innoculation putting bacteria into a medium what is the purpose of aseptic technique -no contaminating organisms are introduced into culture materials during handling or inoculation -handler and other people are not contaminated by ...

Microorganism Organisms and acellular entities too small to be seen clearly by an unaided eye; =<1mm in diameter often unicellular Cellular Fungi (yeasts + molds) protists (algae, protozoa, slime molds) bacteria (E. coli) Archaea (methanogens) Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Acellular Viruses (protein + nucleic acids) Viroids (RNA) Satellites (Nucleic Acid + RNA) Prions (inf...

What are the five basic techniques Microbiologists use to manipulate, grow, examine, and characterize MOs Inoculation; Incubation; Isolation; Inspection; Identification Sterile Complete absence of viable microbe Aspetic Prevention of infection or contamination Pure culture Growth of single species of microbe Inoculation Producing a culture by introducing sample into sterile medium that will sustain growth. Can be taken from blood, CSF, discharge, disease tissues, soil, water, sewage, foods, ...

Van Leeuwenhoek - correct answer - Robert Koch - correct answer *German microbiologist who isolated, cultured and identified: - Bacillus anthracis, Mycobacterium tuberculosis, Vibrio cholera *KOCH'S POSTULATE: To establish that an organism is the cause of a disease, it must be: - found in all cases of the disease examined - prepared and maintained in a pure culture - capable of producing the original infection, even after several generations in culture - retrievable from an inoculated...