Genetics DNA Chromosomes and Protein Bases

DNA stands for

• Deoxyribonucleic Acid

• Duoribonucleic Acid

• Double-stranded Nucleic Acid

• Dehydrated Nucleus Acid

A small section of DNA that contains hereditary information is known as a

• nucleotide

• base pair

• gene

• trait

Tags

NGSS.HS-LS3-1

DNA is made up of small molecules called

• histones

• genes

• nucleotides

• chromosomes

Tags

NGSS.HS-LS3-1

Select all three correct responses.

Nucleotides are molecules made up of a

• phosphate group

• deoxyribose sugar

• nitrogen-rich base

• calcium-rich base

• carbonate group

DNA forms a twisted ladder shape called a

• triple helix

• double helix

• half helix

• twisted ladder

Select two correct answers.

The "uprights" of the DNA ladder are made of alternating ___________ and _________ groups

• phosphate

• sugar

• nitrogen

• base

Select two options.

Nitrogen rich bases have different chemical structures and only ever pair together in a specific order, what are the pairs?

• A always pairs with C

• A always pairs with T

• G always pairs with C

• G always pairs with A

This picture represents a nucleotide. The green arrow is pointing at the

• acid

• sugar

• nitrogen rich base

• thymine

A three-base sequence codes for a

• nucleotide

• protein

• amino acid

• doughnut

Each human has 23 pairs of chromosomes for a total of 46. A pair of chromosomes that are similar are called

• homologous pairs

• similar pairs

• apples and pairs

• inherited pairs