Unit One Biology Leap Review

A molecular group consisting of a sugar molecule, a phosphate group and a nitrogenous base is a nucleotide.

• True

• False

In a DNA molecule, the bases adenine and guanine are paired with each other.

• True

• False

In DNA replication, the primase is the enzyme that unzips the double stranded helix.

• True

• False

Okazaki fragments are the fragments of DNA created in the lagging strand during replication.

• True

• False

DNA replication takes place in the cell's nucleus.

• True

• False

In eukaryotes, the RNA is a molecule that stores the genetic information of the organism.

• True

• False

In RNA, Cytosine is absent and is replaced by Uracil.

• True

• False

RNA polymerase initiates the transcription of DNA to messenger RNA.

• True

• False

The complementary codon of TAC in a DNA strand is ATG.

• True

• False

mRNA strands runs in a 3' to 5' direction.

• True

• False