Contents
- 1 What Factors Besides Physical Growth Characteristics Are Important When Recording?
- 2 What other information should you include when describing physical growth characteristics?
- 3 Why are growth characteristics more useful on agar plates than agar slants?
- 4 Which type of culture media is best used to grow stock cultures of bacteria for storage quizlet?
- 5 Which of the following term describes growth as opaque dense with smooth edge?
- 6 Why is it important to characterize and identify unknown environmental bacteria?
- 7 What factors influence the colony morphology of a microbial growth quizlet?
- 8 What are some advantages of an agar plate over a slant tube?
- 9 Why is slant culture preferred in preservation over Petriplate culture?
- 10 What are slant cultures in microbiology quizlet?
- 11 What factors can greatly impact the growth of bacteria in an environment or on a particular object?
- 12 What did you use to establish what constitutes good growth?
- 13 What is the most commonly used temperature for growing bacteria?
- 14 What are the environmental factors that affect the growth of bacteria?
- 15 Which of the following characteristics may be used to describe the growth of bacteria on a solid surface like an agar slant?
- 16 Why is it important to determine colony cultural characteristics?
- 17 Why is it important to identify and characterize bacteria?
- 18 Which two characteristics are the most important to identify when starting to identify an unknown bacteria?
- 19 What is the importance of knowing the different methods of bacterial identification?
- 20 What factors influence microbial growth quizlet?
- 21 What factors affect the growth and death of microorganisms quizlet?
- 22 What are the factors that can affect the Colonial morphology of a bacteria?
- 23 Why is it important to keep the lid on your growth plates as much as possible?
- 24 What are some advantages of growing bacteria on agar plates?
- 25 How might you prepare a spread plate from organisms growing on a slant?
- 26 Why is it important to have a pure culture and not a mixed culture when performing biochemical tests?
- 27 Why is it necessary for cultures intended for further use be stored in the refrigerator 40c?
- 28 What is the difference between slant and deep tube?
- 29 Why are growth characteristics more useful on agar plates than agar slants?
- 30 What is the difference between a broth and slant?
- 31 What is flocculent growth?
- 32 What are the two most important factors to control the growth of bacteria?
- 33 What are the 4 main growth requirements for bacteria?
- 34 What is the most important environmental factor influencing bacterial growth quizlet?
- 35 FACTORS AFFECTING DEVELOPMENT
- 36 Dr. Nadia Al-Tamimi – Identification of QTLs associated with growth & transpiration at the TPA
- 37 PS 1 PRELIM MODULE 4 VIDEO RECORDED DISCUSSION
- 38 Human Development: Meaning, Concepts and Approaches
What Factors Besides Physical Growth Characteristics Are Important When Recording?
What factors besides physical growth characteristics are important when recording data about an organism? Other important factors to include would be the growth medium, incubation temperature and atmosphere (aerobic or anaerobic).
What other information should you include when describing physical growth characteristics?
What other information should you include when describing the physical growth characteristics? Incubation temperature, time and the type of medium used—these all affect the appearance of bacterial growth. Colony size, color, and shape are three critical aspects of a description of bacterial growth.
Why are growth characteristics more useful on agar plates than agar slants?
Why are growth characteristics more useful on agar plates than on agar slants? … Slants are better suited because they can be capped, preventing the agar and culture from drying out. The cap also prevents airborne contaminates from entering the slant. Slants take up less storage space.
Which type of culture media is best used to grow stock cultures of bacteria for storage quizlet?
Agar is an ideal solidifying agent for microbial growth media because it is indigestible which means that the microbes do not utilize it as a nutrient source they only utilize the specific nutrients that are in the media. Also, agar remains solid at the temperatures that are often used to grow microbes, 37oC and 25oC.
Which of the following term describes growth as opaque dense with smooth edge?
Filiform– dense and opaque with a smooth edge. pellicle- some organisms float on top of the medium and produce a type of surface membrane called a pellicle.
Why is it important to characterize and identify unknown environmental bacteria?
WHY IS THE IDENTIFICATION OF BACTERIAL UNKNOWNS IMPORTANT? Microbiologists must identify bacterial isolates for several practical reasons: • Medical diagnostics — identifying a pathogen isolated from a patient. Food industry — identifying a microbial contaminant responsible for food spoilage.
What factors influence the colony morphology of a microbial growth quizlet?
Incubation temperature, time and the type of medium used—these all affect the appearance of bacterial growth. Three critical aspects of a description of bacterial growth are colony size, color, and shape.
What are some advantages of an agar plate over a slant tube?
What are some advantages of an agar plate over a slant tube? Agar slants are useful in maintaining growth of microorganism over long periods of time without allowing the cultures to dry out. The agar plate is beneficial over a slant tube because it allows for observation, easy access, and isolation of various cultures.
Why is slant culture preferred in preservation over Petriplate culture?
Slanting the surface of the agar gives the bacteria a greater surface area on which to grow in a test tube. Furthermore, slants are created in test tubes that can be capped, which minimizes water loss.
What are slant cultures in microbiology quizlet?
Broth cultures provide a large amounts of bacteria in small volume, and they are easily transported. Describe agar slants. Agar slants are test tubes containing solid media that were left an an angle while the agar solidified. They provide a solid growth surface for bacteria and are also easily stored and transported.
What factors can greatly impact the growth of bacteria in an environment or on a particular object?
Warmth, moisture, pH levels and oxygen levels are the four big physical and chemical factors affecting microbial growth.
What did you use to establish what constitutes good growth?
What did you use to establish what constituted “good growth?” The nutrient agar plate inoculated with the same organisms provided examples of what “good growth” for each organism looks like on a nonselective media.
What is the most commonly used temperature for growing bacteria?
Some bacteria thrive in extreme heat or cold, while others can survive under highly acidic or extremely salty conditions. Most bacteria that cause disease grow fastest in the temperature range between 41 and 135 degrees F, which is known as THE DANGER ZONE.
What are the environmental factors that affect the growth of bacteria?
- Moisture. Water is an essential component for the growth of the bacteria. …
- Oxygen. On the basis of requirement of oxygen, bacteria are classified under three groups. …
- Carbon Dioxide. …
- Temperature. …
- pH. …
- Light. …
- Osmotic Effect. …
- Mechanical and Sonic Stress.
Which of the following characteristics may be used to describe the growth of bacteria on a solid surface like an agar slant?
The term Colony Forming Unit (CFU) is used to describe bacterial growth on solid agar because bacterial cells stick together.
Why is it important to determine colony cultural characteristics?
It is important in microbiology to determine the characteristics of bacteria such as colonies, the rapidity of their development, their action upon the medium, size, shape, and appearance to identify the bacteria.
Why is it important to identify and characterize bacteria?
In microbial ecology, the identification of microorganisms helps us characterize biodiversity. … Because the clinical samples will most likely contain many microorganisms, both normal flora and pathogens, it is important to isolate the pathogen in a pure culture using various types of selective and differential media.
Which two characteristics are the most important to identify when starting to identify an unknown bacteria?
Begin the process of identifying unknown bacteria by observing their physical characteristics, such as cell wall, shape and linkages. Use standard laboratory procedures, like cell staining, culturing and DNA sequencing to further narrow down your identification.
What is the importance of knowing the different methods of bacterial identification?
Identification of microorganisms – provides the name of the organism (to genus or species level), which can help in determining whether it is a safety or spoilage concern or is likely to be heat resistant, for example.
What factors influence microbial growth quizlet?
Temperature, ultraviolet radiation, and osmotic pressure. Some point between the minimum and maximum temperature. Enzymatic functions of bacteria are at their maximum rate, and growth occurs fastest at this temperature. The minimum, maximum, and optimal growth temperatures of an organism.
What factors affect the growth and death of microorganisms quizlet?
The growth and death of microorganisms are dependant on several environmental factors including temperature, osmotic pressure, pH, and oxygen concentration. You just studied 15 terms!
What are the factors that can affect the Colonial morphology of a bacteria?
Colonies are described on the basis of size, shape, texture, elevation, pigmentation, and effect on growth medium. In this blog post, you will find common criteria that are used to characterize the bacterial growth.
Why is it important to keep the lid on your growth plates as much as possible?
keep the lid over the Petri dish as much as possible to prevent air contamination. This is a dilution technique; bacteria are being deposited onto the agar surface as the loop moves across the plate.
What are some advantages of growing bacteria on agar plates?
Growing cultures of bacteria on solid media (agar plate or slant) permits us to view and identify colonial characteristics, and also provides a way to separate bacteria in a mixed culture.
How might you prepare a spread plate from organisms growing on a slant?
Inoculate the slant by transferring cells with an inoculating loop from a single-colony microorganism on a plate to the slant’s surface. Move the loop across the surface of the slant and recap the tubes. Incubate the slant until there is evidence of growth, then put the tube in a refrigerator.
Why is it important to have a pure culture and not a mixed culture when performing biochemical tests?
The importance of having a pure culture, and not a mixed culture, when performing biochemical testing is that a pure culture may react much differently in isolation than when it is combined with other species. … A mixed species entails contamination and, as such, the control of the experiment is lost.
Why is it necessary for cultures intended for further use be stored in the refrigerator 40c?
Storing bacteria in a refrigerator is practical for short periods of time. … Cultures stored at 4°C are sensitive to more rapid die off than frozen or freeze dried bacteria. Often researchers store cultures on plates which are very susceptible to fungal contamination and drying.
What is the difference between slant and deep tube?
If the medium in the test tube is allowed to harden in a slanted position, the tube is designated an agar slant; if the tube is allowed to harden in an upright position, the tube is designated an agar deep tube; and if the agar is poured into a Petri dish, the plate is designated an agar plate.
Why are growth characteristics more useful on agar plates than agar slants?
Why are growth characteristics more useful on agar plates than on agar slants? … Slants are better suited because they can be capped, preventing the agar and culture from drying out. The cap also prevents airborne contaminates from entering the slant. Slants take up less storage space.
What is the difference between a broth and slant?
Pure broth cultures contain a liquid media, while slant cultures contain a semi-solid media.
What is flocculent growth?
What are the two most important factors to control the growth of bacteria?
- Food: Bacteria require food to survive. …
- Acid: Bacteria do not grow in acidic environments. …
- Temperature: Most bacteria will grow rapidly between 4°C and 60°C (40°F and 140°F). …
- Time: Bacteria require time to multiply. …
- Oxygen: There are two types of bacteria.
What are the 4 main growth requirements for bacteria?
There are four things that can impact the growth of bacteria. These are: temperatures, moisture, oxygen, and a particular pH.
What is the most important environmental factor influencing bacterial growth quizlet?
The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and… Temperature. With ideal environmental factors, the reproduction rate of bacteria is… Extremely rapid.
FACTORS AFFECTING DEVELOPMENT
Dr. Nadia Al-Tamimi – Identification of QTLs associated with growth & transpiration at the TPA
PS 1 PRELIM MODULE 4 VIDEO RECORDED DISCUSSION
Human Development: Meaning, Concepts and Approaches
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