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The hands after the plate likely have more colonies because they were exposed to various contaminants during the process of handling the plate, such as touching surfaces, utensils, or other materials that harbor bacteria and fungi. Additionally, the act of touching can transfer microorganisms from the skin to the plate, increasing the colony count. In contrast, the hands before the plate may have fewer colonies due to less exposure or more effective hygiene practices.
What else can I help you with?
What happened to the diversity of colonies in this plates which made the hands after plate to have more colonies than the hands before?
The increased diversity of colonies on the plates after the hands were washed can be attributed to the removal of dirt, oils, and microorganisms from the skin, which allows for a more varied microbial environment to flourish. When hands are cleaned, the process may disrupt established colonies, making room for new, previously outcompeted organisms to grow. Additionally, the washing process could introduce new microbes from the environment, contributing to a greater diversity of colonies on the plates after washing.
What are the surface colonies on a pour plate larger than those within the medium?
The surface colonies on a pour plate larger than those within the medium especially aerobic bacteria within the medium would be a restriction of growth. The restriction of growth would be due to the lack of oxygen.
What is considered a high plate count?
A high plate count in microbiology typically refers to the presence of a large number of bacterial colonies on a culture plate. The specific threshold for what is considered "high" can depend on the type of sample being tested and the laboratory's protocols. In general, a plate with more than 300 colonies may be indicative of contamination or a high bacterial load.
What is the purpose for pour plate?
The purpose of a pour plate is to determine the concentration of bacteria in a sample by counting the number of colonies that grow on the agar plate after incubation. This method allows for both surface and subsurface colonies to be counted, providing a more accurate representation of the bacterial population in the sample.
Where would the colonies be located in a pour plate method?
In the pour plate method, colonies are typically located throughout the agar medium, both on the surface and within the agar. This method allows for the growth of aerobic and anaerobic microorganisms, as the organisms are mixed into the molten agar before it solidifies. As the bacteria grow, they form colonies at various depths depending on their oxygen requirements and growth conditions. Surface colonies may be more numerous, while those within the agar may be smaller and less visible.
What happened to the diversity of colonies in this plates which made the hands after plate to have more colonies than the hands before?
The increased diversity of colonies on the plates after the hands were washed can be attributed to the removal of dirt, oils, and microorganisms from the skin, which allows for a more varied microbial environment to flourish. When hands are cleaned, the process may disrupt established colonies, making room for new, previously outcompeted organisms to grow. Additionally, the washing process could introduce new microbes from the environment, contributing to a greater diversity of colonies on the plates after washing.
What are the surface colonies on a pour plate larger than those within the medium?
The surface colonies on a pour plate larger than those within the medium especially aerobic bacteria within the medium would be a restriction of growth. The restriction of growth would be due to the lack of oxygen.
What happens to the diversity of colonies on hands before and hands after plates?
Before plating, the diversity of microbial colonies on hands is typically higher due to the presence of various bacteria, fungi, and other microorganisms that naturally inhabit the skin. After plating, especially if the plates are incubated under specific conditions, the diversity may decrease as certain species outcompete others, leading to a predominance of specific types of microbes. This selective growth can result in fewer but more abundant colonies, reflecting the conditions favored in the plating environment. Overall, the transition from hands to plates tends to shift the microbial community composition.
What is considered a high plate count?
A high plate count in microbiology typically refers to the presence of a large number of bacterial colonies on a culture plate. The specific threshold for what is considered "high" can depend on the type of sample being tested and the laboratory's protocols. In general, a plate with more than 300 colonies may be indicative of contamination or a high bacterial load.
Which of these was true about North American colonies held by Britain and France before the French and Indian War?
Britain colonies had more people bu french colonies held more land
What does the streak plate method have over the pour plate method?
It is more likely to give individual colonies regardless of the concentration of the original source. With pour plates, you might have to use several plates with different dilutions of inoculum to get individual colonies.
What is the purpose for pour plate?
The purpose of a pour plate is to determine the concentration of bacteria in a sample by counting the number of colonies that grow on the agar plate after incubation. This method allows for both surface and subsurface colonies to be counted, providing a more accurate representation of the bacterial population in the sample.
Where would the colonies be located in a pour plate method?
In the pour plate method, colonies are typically located throughout the agar medium, both on the surface and within the agar. This method allows for the growth of aerobic and anaerobic microorganisms, as the organisms are mixed into the molten agar before it solidifies. As the bacteria grow, they form colonies at various depths depending on their oxygen requirements and growth conditions. Surface colonies may be more numerous, while those within the agar may be smaller and less visible.
What was true about Native American colonies help by Britain and France before the French and Indian War?
British colonies had more people, but French colonies held more land.
What determines the size of cultured colonies?
The size of the cultured colonies is usually determined by how densely the plate is populated. The more densely populated the plate, the greater the competition is among the microorganisms for nutrients. This competition results in the growth of reletively small colonies which tend to be merged together. On a more sparsely populated plate, there are enough nutrients for the microorganisms to grow sufficiently resulting in larger colonies.
How do you determine the number of organisms in a water sample if your dilution plate has presence of spreading colonies?
To determine the number of organisms in a water sample when spreading colonies are present on a dilution plate, you would count the number of colonies on a plate with a countable amount (usually between 30-300 colonies). Then, you would multiply this count by the dilution factor used and adjust for the volume plated to calculate the total number of organisms in the original water sample. Keep in mind that any spreading colonies need to be accounted for in this calculation.
What was true about north American colonies held by Britain and France before french and Indian war?
British colonies had more people, but French colonies held more land.-APEX
