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Lubov Fominskaja [6]
3 years ago
11

Questions are attached below I need help asap pls and thank you

Biology
1 answer:
inna [77]3 years ago
7 0
Is so much but I’m answering in my house and i help you ok one is A
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If we have a plate that has 2500 colonies on it, can we use this plate to calculate CFU's
AleksAgata [21]

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.

6 0
3 years ago
I need help with this problem !
Brilliant_brown [7]
It’s a heterotroph!!!! You’re welcome!
4 0
3 years ago
What are the dominant freshwater flora and fauna?
ArbitrLikvidat [17]
C.plants and amphibians
4 0
3 years ago
PLEASE HELP!! Identify a specific environmental factor that will cause a response to living things, and describe how this factor
jasenka [17]

Answer:

A specific environmental factor that will cause a response to living things will be light from the sun.

Explanation:

An enhanced amount of light from Sun will cause the plants to have enhanced photosynthesis. Photosynthesis can be described as a process by which plants use light energy from the sun to convert carbon dioxide and water into sugar (food) and oxygen.

In animals, enhanced amount of light from the sun will cause sweating and vasodilation.

The process of photosynthesis won't occur in animals and the process of sweating won't occur in plants.

7 0
3 years ago
How do the mitochondria and vacuole work together?
jenyasd209 [6]
Mitochondria converts food energy into cell energy for the cell use this probides energy for the ribosome
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