Scientists use scientific notation to represent very small or very large numbers because this notation increases the
accuracy of measured quantities.
convenience in using the numbers.
number of significant figures.
precision of measurements.

convenience in using the numbers.

Explanation:

Very small numbers have too many digits, similar to large numbers.

This numbers can take too much space and therefore cause inconvenience during recording or calculation.

To avoid this inconvenience, scientists use scientific notations in representation of this numbers.

Some examples of the notations are:

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.