To manufacture DNA, the cell needs a balance in the levels of purine and pyrimidine nucleotides. This balance is controlled by
A) the enzyme ribonucleotide reductase.
B) feedback mechanisms.
C) the level of ATP in the cell.
D) restriction enzymes.
E) pinocytosis of precursors.
Correct Answer:
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Q8: The coding sequence of a gene is
Q9: Non-coding DNA can best be described as
A)
Q10: Which of the following statements about chloroplast
Q11: Ribosomal DNA is
A) synthesised by ribosomes in
Q12: A 'jumping gene' is able to insert
Q14: The percentage of essential genes in a
Q15: cDNA is used in microarrays because it
A)
Q16: Given that different organisms can have sections
Q17: Variation between individuals of a species
A) is
Q18: Spontaneous mutations
A) are rare, because of the
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