DNA, Genes and Chromosomes

DNA is found in cheek cells

• True

• False

Answer explanation

All tissues are made of cells and each cell has a nucleus that contains our DNA

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

The whole genome can be found in a cell from the lining of the stomach

• True

• False

Answer explanation

Each cell contains DNA with the whole genome

DNA is in the nucleus of all cells

• True

• False

Answer explanation

True for nearly all cases. Red blood cells do not have a nucleus because its function is to squeeze through small capilliaries

DNA is alive?

• True

• False

Answer explanation

DNA is not alive it is something made up of chemical substances that show no living characteristics

The same copy of DNA is in all the nuclei of an organism

• True

• False

Answer explanation

After fertilisation the single cell that carries your DNA continues to multiply by doubling and each new cell carries the exact same DNA that is "you"

Human cells contain 46 genomes

• True

• False

Answer explanation

You have only one genome. However this is contained in 46 chromosomes, 23 from your mother and 23 from your father.

A chromosome is made of genes

• True

• False

Answer explanation

A chromosome is made of DNA. Genes are regions of the chromosome but there are parts of it assigned to other things

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

The shape of DNA is called a triple helix

• True

• False

Answer explanation

The shape of DNA is called a double helix made by the twisting of opposing phosphate/sugar rungs

The four bases Adenine, Cytosine, Guanine and Thymine are made of Hydrogen

• True

• False

Answer explanation

The four bases are nitrogen rich. These bases attched together by base pairing with a hydrogen bond. Hydrogen will bond covalently with Nitrogen

Tags

NGSS.HS-LS1-1

Genes are a living organism

• True

• False

Answer explanation

Genes are just a bunch of chemical sequenced together to make the code for a particular trait....like brown eyes

Tags

NGSS.MS-LS3-1