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PSYCHO15rus [73]
3 years ago
6

True or false: Cellular microbes are often arranged in multicellular complexes with differentiated tissues.

Biology
1 answer:
wariber [46]3 years ago
6 0

Answer:

False

Explanation:

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What is the dilution factor if 2 μl of DNA sample is added to 498 μl of water (Dilution factor = Final volume / Aliquot volume)?
polet [3.4K]

Answer:

The correct answers are: Dilution factor = 250 and concentration of DNA in undiluted sample = 2.5 μg/μl.

Explanation:

  • Volume of DNA taken = 2 μl.
  • Volume of added water = 498 μl.
  • Total volume of the sample = 2 μl + 498 μl = 500 μl.
  • Dilution factor = \frac{Final Volume}{Aliquot volume}  = 500\div2 = 250.
  • A₂₆₀ of the given sample is = 0.2.
  • We know that 50 μg/ml concentration of pure double stranded DNA gives an absorbance, A₂₆₀ = 1.
  • Again, Concentration of DNA(µg/ml) = A_{260}\times \texrm{dilution factor}\times 50 µg/ml.
  •                                                             = 0.2\times\ 250\times 50 = 2500 μg/ml.
  • In order to convert it into μg/μl, we have to divide the above value by 1000, hence we get, 2500\div1000 =2.5 μg/μl.
7 0
3 years ago
Once a new finding is published in a scientific journal, it is still only preliminary and must undergo repeated testing to event
aalyn [17]

Answer:

The correct answer is - true.

Explanation:

The scientific journal is are the journals that publish the recent scientific findings or scientific experiments that produce new and appropriate results regarding particular experiment or research/

To confirm an experiment, published finding must be tested repeatedly by different scientists and researchers and see if the results are same in particular conditions.

Thus, the correct answer is - true.

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4 years ago
What is the role of transport
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Carbohydrates, lipids, and protein are types of carbon compounds that are broken down to produce..
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They make up everything needed to create DNA, although im not very sure, i think the answer your looking for is DNA.
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Your task here is to look at the picture and develop a scientific question that can be done in lab or outside of lab. There is n
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The picture given displays an ecosystem's food chain. The animals are the organisms that the energy flows through and the arrows represent where the enerrgy is going.

Question: Which obtains more energy, the rabbit or the fox?

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