#12

When four DNA bases are combined in different three-base sequences, called triplets, different ____ of protein are called for.

B- amino acids

The information of DNA is actually coded in the sequence of nitrogen-containing _____, which are bound together to form the "rungs" of the DNA ladder.

C- bases

It is said that the N-containing bases of DNA are ____, which means that only certain bases can fit or interact together.

E- complementary

Specifically, this means that _____ can bind with guanine, and adenine binds with _____.

F- cytosine, V- thymine

The fact that DNA replicates before a cell divides ensures that each daughter cell has a complete set of _____.

H- genes

Cell division, which then follows, provides new cells so that ____ and ____ can occur.

I- growth, R- repair

In a 3D view, a DNA molecule looks like a spiral staircase; this is correctly called a _____.

K - Helix

When completed, each DNA molecule formed is half ____ and half ____.

L- new, N- old

......Then, the two single strands of _____ each act as a _____ for the building of a whole DNA molecule.

M- nucleotides, U-template, or model

The constant parts of DNA molecules are the ____ and ____ molecules, forming the DNA-ladder uprights, or backbones.

O- phosphate, T- sugar (deoxyribose)

DNA molecule contain information for building specific _____

P- proteins

When a cell is preparing to divide, in order for its daughter cells to have all its information, it must oversee the _____ of its DNA so that a "double dose" of genes is present for a brief period.

Q- replication

................ That is, it leaves the nucleus and carries out the instructions of the DNA for the building of a protein on a cytoplasmic structure called a _____.

S- Ribosome