Answer:
The correct answer is option B.
Explanation:
On seeing the question, it is clear that it is based upon the concept of semi-conservative theory for the replication of DNA. It is mentioned that when the bacteria were grown on N-15, the mass was 55 fg. Now, after two generations, the DNA would comprise N-14 and the mass of them will be 5.4 fg.
The average mass would be = 5.4 + 5.5 / 2 = 10.9 / 2 = 5.45 fg. The mass of the bacteria isolated from the culture would possibly contain both the masses. That is, the mass of DNA with N-14 only would be 5.4 fg, and the mass of DNA with both N-15 and N-14 would be the average, that is, 5.45 fg.
Answer:
I believe coronavirus is a man made virus from China except that it got released into the public.
Explanation:
Answer:
The characteristic of water-soluble hormones are:
1. They dissolve in water and do not dissolve in fat or oil
2. They are produced from amino acids that are soluble in water
3. They will be unable to pass through cell membranes that have fatty molecules
4. They are receptor-specific. That is they bind to a receptor that fits them on the target cell.
Take a dna test... he will be more confident about it then
The Darwin's theory of evolution states that the organisms evolve through the process of the natural selection of the favorable genetic variations gradually over time. Through this process of the evolution, new species are developed over time. A single population may give rise to different species. These newly evolved species share similarities will each other as they have the same ancestor.
Hence, the given statement is 'true'.
