Answer:
According to the current fossil record, scientists believe that the life on earth began about 3.5 billion years ago.
ADP converts into ATP when energy is used in the process of diffusion
Answer:
Explanation:
Deoxyribonucleic acid (DNA) is hereditary molecule found almost in every cell. Although it is very stable molecule but changes known as mutations may occur in this molecules. Deamination is also a type of mutation.
Deamination:
In deamination amino group is removed from Cytosine and produces uracil in DNA. This rate of conversion occurs about 100 bases per cell per day.
Sequence given in question is
... TACT... .
....ATGA...
After deamination the given sequence becomes
... TAUT... .
....ATAA...
Possible contaminate will be Proteus or Salmonella. To differentiate the two genera urease test can be accomplished. However, urease test, Proteus will produce a positive test result.
This test can be done to determine the ability of an organism to split urea. The principle of urease test is that urea is the product of decarboxylation of amino acid. Splitting of urea via hydrolysis will produce ammnonia and CO2. The CO2 produce allows the formation of bubbles.