DNA Basics

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids
• nucleotides
• fatty acids
• polysaccharides

A DNA molecule is shaped like a

• toilet

• cone

• ball

• spiraled ladder

Most chromosomes are shaped like the letter

• Q

• W

• P

• X

Chromosomes occur in the _______ of a cell.

• cell

• chromosome

• gene

• nucleus

An ______________ trait is a trait we get from our parents.

• environmental

• inherited

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Who were the first guys to build a model of a DNA molecule?

• Larry, Moe, and Curley Joe
• Watson and Crick
• Watson and Holmes
• Superman and Batman

The building block of nucleic acids are nucleotides.  Nucleotides are composed of a sugar, a phosphate group, and a _________________ base.

• oxygen
• hydrogen
• nitrogen
• carbon

What are the four nitrogen bases?

• adenine, thymine, guanine, cytosine
• adenine, lysine, prolene, guanine
• arganine, cytosine, lysine, purine
• lysine, cytosine, lucine, guanine

The sugar in DNA is ?

• sucrose
• glucose
• deoxyribose
• fructose

When DNA makes a copy of itself, the new strands are identical or different?

• identical
• different

Tags

NGSS.HS-LS3-2