Bacillus subtilis - Study guides, Class notes & Summaries

Lab 8 Identifying an Unknown Organism BIO250L Straighterline Microbiology Lab BIO250L Lab 8 Identifying an Unknown Organism Worksheet 2023 Student Name: Access Code (located on the underside of the lid of your lab kit): Data Sheet 1. Insert your dichotomous key here. Lab 8 Identifying an Unknown Organism BIO250L 2. Write your microorganism number here: 2 Lab 8 Identifying an Unknown Organism BIO250L 3. Fill in the following table as you complete the interactive. Test Observations ...

What term describes the morphology of organisms that vary in shape and size? - CORRECT ANSWER Pleomorphic Capsules are the basis of which test? - CORRECT ANSWER Serotyping A mucoid colony on blood agar medium indicates that which of the following characteristics may be present? - CORRECT ANSWER Organism has a capsule. What are dark staining granules called? - CORRECT ANSWER Metachromatic Which of the following organisms are non-motile? - CORRECT...

How are thermal death point and thermal death time different? - Thermal death point is the lowest temperature that kills all cells in a broth in 10 minutes. Thermal death time is the time required to completely sterilize a particular volume of liquid at a given temperature. Is moist heat more effective than dry heat? - Because of its ability to penetrate microbial cells, moist heat kills microogranisms by denaturing their proteins. Sterilization can be achieved at lower temperatures in a sh...

Protégé Learning Microbiology-Lab 1 Questions with Complete Solutions BSL Bio-safety Levels, the classification of microbes BSL-1 "Organisms that don't typically cause disease" & are a minimal threat. Standard microbiological practices are adequate. They can be handled out in the open with no special equipment required. Examples are Bacillus subtilis & E. coli BSL-2 Organisms encountered commonly in the community, "they present a moderate threat" of environmental and/or health h...

What term describes the morphology of organisms that vary in shape and size? Pleomorphic i.e. coccobacilli Bacteriology arrangements: -pairs (diplococci "N. Gon"; diplobacilli -chains (streptococci, streptobacilli) -grape like clusters (staphylococci) -group of four-tetrads (peptococcus) -packets of eight-cuboidal (sarcina) -palisades (corneybacterium) Capsules are the basis of which test? serotyping and identification (capsules are antigenic); they are observed usi...

Pyrimidine dimers formed in DNA due to UV radiation can be repaired by? SOS repair Double strand break repair Mismatch repair Photoreactivation repair (nucleotide excision repair) Base excision repair - CORRECT ANSWER Photoreactivation repair (nucleotide excision repair) Which of the following repair mechanisms uses methyl groups to distinguish between parental and daughter strands? Answers: Mismatch repair Photoreactivation repair (Nucleotide excision repair) SOS repair Doub...

Microbiology Lab Exam 6 Questions with Complete Solutions rated A+ How are thermal death point and thermal death time different? - Thermal death point is the lowest temperature that kills all cells in a broth in 10 minutes. Thermal death time is the time required to completely sterilize a particular volume of liquid at a given temperature. Is moist heat more effective than dry heat? - Because of its ability to penetrate microbial cells, moist heat kills microogranisms by denaturing their p...

Microbiology Lab 1 Practical Exam Questions and Answers Magnification -Answer-makes an image appear larger then its actual size Total magnification -Answer-eyepiece x objective wavelength of light -Answer-Light travels as waves and wavelength is the distance peak to peak on a wave Visible light has a wavelength between 350-700 nanometers Each wavelength is a different color of light Violet = 350 nm, Red = 700nm For good resolution, we use blue light (480/500 nm) Numerical Aperture -Ans...

Microbiology 555 The prokaryotes Study Guide Test. 1) Which of the following are found primarily in the intestines of humans? A) Gram-negative aerobic rods and cocci B) Aerobic, helical bacteria C) Facultatively anaerobic gram-negative rods D) Gram-positive cocci E) None of the above - CORRECT ANSWER C) Facultatively anaerobic gram-negative rods 2) Which of the following is a characteristic of Clostridium? A) Endospore-forming cocci B) Mycobacteria C) Gram-negative aerobic cocci ...

Pyrimidine dimers formed in DNA due to UV radiation can be repaired by? SOS repair Double strand break repair Mismatch repair Photoreactivation repair (nucleotide excision repair) Base excision repair - CORRECT ANSWER Photoreactivation repair (nucleotide excision repair) Which of the following repair mechanisms uses methyl groups to distinguish between parental and daughter strands? Answers: Mismatch repair Photoreactivation repair (Nucleotide excision repair) SOS repair Doubl...