DNA Structure

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine
• deoxyribose sugar and a hydrogen bond
• deoxyribose sugar and the nucleus
• deoxyribose sugar and phosphate

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Tags

NGSS.MS-LS3-1

NGSS.MS-PS1-1

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, protein

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• ribosome
• nucleus

According to Chargaff's rule, Cytosine always pair with

• Adenine

• Uracil

• Thymine

• Guanine

How is the instructions for your traits carried on a DNA molecule?

• Sequence of the nitrogen bases

• In the Deoxyribose Sugar

• In the bond between the phosphate and the sugar

• In the phosphate group

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

The sugar in DNA is ?

• sucrose
• glucose
• deoxyribose
• fructose

If a DNA molecule consists of 30% adenine, what percent cytosine would you expect it to consist of?

• 30%

• 40%

• 20%

• 70%