1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sesenic [268]
3 years ago
11

If we have a plate that has 2500 colonies on it, can we use this plate to calculate CFU's

Biology
1 answer:
AleksAgata [21]3 years ago
6 0

No, the solution with bacteria in it needs to be diluted in order to be in the range of 30 – 300.

A colony-forming unit –CFU is used to estimate the number of viable (ability to divide by binary fission) microbes in a sample.  

A sample of microbes is diluted and spread on a plate. Then, the number of colonies is counted, assuming that each colony have grown from a single colony-forming unit, or CFU.

Plates with more than 300 colonies are difficult to count while those with less than 30 colonies give statistically unreliable numbers of colonies to count.

You might be interested in
What would happen if more forests are cut down?
Vikentia [17]

Answer:

Life could get harder

Explanation:

Forests are habitats for animals and also food for both humans and animals so if they were to get cut down it could take some time for everyone to find what they need and forests also produce oxygen as well so without enough forests or trees to produce oxygen bad things could happen.

4 0
3 years ago
Read 2 more answers
Describe the connection between soil quality and water quality.
lianna [129]

Answer:

The link between some of the given contexts is characterized below.

Explanation:

  • The soil, as well as the water, have been strongly interlinked. Implementation of biodiversity conservation just to focus on improving soil structure also strengthens water supplies.
  • Healthy soils serve various tasks, including certain strengthening infiltration, maintaining water for irrigation, utilizing heavy metals, quantization stormwater runoff, as well as surface hardness.

8 0
3 years ago
The mass number of an atom is:
n200080 [17]

Answer:

The mass number of an atom is its total number of protons and neutrons. Atoms of different elements usually have different mass numbers , but they can be the same. For example, the mass number of argon atoms and calcium atoms can both be 40.

Explanation:

8 0
3 years ago
Read 2 more answers
To replace burned skin doctor can successfully transplants replacement skin taken from another part of body of the burn victim.w
Tanzania [10]
That are the statements
5 0
3 years ago
One end of the rope is vibrated to produce a wave with a wavelength of 0.25 m. The
evablogger [386]

Answer:

3) 0.75m/s

Explanation:

The wavelength of a wave is calculated using the formula;

λ = v/f

Where!

λ = wavelength of wave (m)

v = velocity or speed (m/s)

f = frequency of wave (Hz)

According to this question, one end of a rope is vibrated to produce a wave with a wavelength (λ) of 0.25 m and frequency (f) of 3.0 Hz.

Using λ = v/f

v = λ × f

v = 0.25 × 3

v = 0.75m/s.

5 0
3 years ago
Other questions:
  • Heritable differences that exist between individuals of the same species
    8·1 answer
  • How does the temperature affect the size of a daphnia population??<br><br> Plz I need help !!
    15·1 answer
  • The elbow joint is a hinge joint formed by the meeting of the humerus, radius, and ulna. What type of bone marking enables these
    9·2 answers
  • MRSA is the acronym for methicillin-resistant Staphylococcus aureus. Many of the strains of the common bacterium are also resist
    15·1 answer
  • Define the term biology​
    14·2 answers
  • What is used to direct protein synthesis in the cell?
    5·1 answer
  • The ________________ is a passageway for both air and food to travel. MULTIPLE CHOICE.
    6·1 answer
  • 4. When is a sea breeze most intense?
    6·2 answers
  • What structures do human epithelial cells have in common with elodea cells
    9·2 answers
  • If the pH of a solution changes from 8 to 9, what happens to the hydroxide ion concentration?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!