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Blizzard [7]
1 year ago
7

You perform a quadrant streak of e. coli at 11:00 am. How many bacteria are present in one cfu at 9:00 pm?

Biology
1 answer:
Hitman42 [59]1 year ago
4 0

E.coli Bacteria present in one CFU at 9:00 pm = 1.07 X 109 bacteria and E.coli at 11:00 am = 1 generation time. That means 2.66X 10^ 9 cells per 1 CFU.

The average CFU in probiotics is between 1 and 10 billion CFUs per serving. To find out the number of CFU in the sample then the number of colony forming units on thee countable plate is multiples by 1/FDF. For example when the countable place has 200 colonies then 200 CFU and the FDF was 1/4000.

CFU measures the viable cells.High number of E.coli bacteria in water indicates that contaminated by feces. and it increasing the risk of exposure to pathogens that causes illness.

To learn more about E.coli Bacteria here

brainly.com/question/14258810

#SPJ4

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Answer:

Thymine

Explanation:

DNA nucleotide bases always attach in specific pairs.

Adenine is always with Thymine and Cytosine is always with Guanine. Here, since one nucleotide is Adenine, we know the other nucleotide is Thymine.

One way to remember this pairing is by this device:

Car in the Garage (cytosine goes with guanine)

and

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Which is an advantage of producing genetically engineered crops that have pest-resistant genes?
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6 0
3 years ago
The situation in which some individuals have greater reproductive success than other individuals in a population. Along with var
professor190 [17]

Answer:

The situation in which some individuals have greater reproductive success than other individuals in a population. Along with variation and heritability, it is one of the three conditions necessary for evolution by natural selection.

There are so many factors that contributed to this over time, reproductive success differs and it could be attributed to hereditary and variation as well. Most often, the hereditary plays the most role out of all as the viability of both eggs and sperms could have been inherited from parents or being affected as a result of environmental factor or nutrition or other factors.

For instance, if one has a rhesus factor of negative and went ahead to marry another male counterpart with negative rhesus factor, this sedomly leads to miscarriage which could have been controlled had it been they were thoroughly counseled. Furthermore, physical factor such as accident could damage one spermatical vessicles that houses the sperm cells which render such an individual to be unable to donate a viable sperm cell for reproduction.

Those with high rate of reproductive success thrives as result of having many offspring which increases their chances of having more offspring than those with little success rate.

Explanation:

6 0
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