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Neko [114]
3 years ago
8

Use the scenario to answer the question

Biology
1 answer:
sweet [91]3 years ago
7 0
A. it’s shows evidence of evolution
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The inherited disease sickle cell anemia occurs because of an abnormally shaped protein taking the place of one of the _____ cha
Bad White [126]

Answer: B. beta

Explanation:

Sickle cell anemia is a inherited disorder which occur due to mutation of gene responsible for synthesis of hemoglobin protein. Typically the gene which is responsible for synthesis of beta-globin protein which make the beta chains in the hemoglobin is affected by the mutation.  As a result of this the red blood cells acquire a shape of sickle rather than round. Pain, cold, stress, dehydration and illness are the symptoms associated with this disorder.

7 0
3 years ago
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
PLEASE HELP ASAP!!
Colt1911 [192]

Answer: Friction slows down the swing of the pendulum until it fully stops.

I'm not sure what to put for the next question

4 0
3 years ago
Wow the crust of the earth feels very solid those who live on top of it It is actually a series of plates which interact with ea
baherus [9]

Answer:

B

Explanation:

The movement of plates (convergence, divergence etc) cause landforms such as mountains and volcanoes to form! It's really cool, isn't it!

8 0
2 years ago
What is most likely cause of the change in population size in year 6 shown in the graph below
Harman [31]

I think your answer is a hot summer. during this phase, there would be rapid growth in vegetation leading to increased population in rabbits and other rodents...

7 0
3 years ago
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