DNA

Hanson says, There are more cells in the human body than there are

• Fish in the sea.

• Stars in the Milky Way.

• Apartments in Manhattan.

• Golf balls in the PGA tour.

The entire genome (or, "the book of you") is contained inside the _________ of the cell.

• Mitochondria

• Cell wall

• Nucleus

• Lysosome

Explain how some cells know to be muscle and some know to be bone.

DNA is crammed into a space nearly 1 million times smaller than itself. What does it first do to organize itself?

• The thread of protein separates itself into parallel strips according to base pairs.

• The short part of the protein thread disassembles and reassembles only when cells are formed.

• There is no apparent organization in the long thread of DNA .

• The long thread of DNA wraps around proteins clustered into little beads called nucleosomes.

Though all humans start off the same way, which explanations below are true about what makes us all so different.

• our unique DNA

• variation of traits

• number of chromosomes

• organization of our genes

How many chromosomes does the human genome contain?

• 14

• 23

• 26

• 96

It's estimated that all the chromosomes together house about 20,000 individual instructions called:

• Genes

• Base pairs

• Chromatophores

• Lipids