DNA Structure Year 9

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

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NGSS.HS-LS1-1

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

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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

In a DNA molecule, bases are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds

Tags

NGSS.HS-LS1-1

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

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

Tags

NGSS.HS-LS1-1

What are the three components of a nucleotide?

• sugar, hydrogen, base

• sugar, oxygen, base

• sugar, phosphate, base

• sugar, phosphate, protein

In DNA adenine always pairs with

• Adenine

• Thymine

• Uracil

• Guanine

Name this structure

• double helix
• nucelotide
• twisted ladder
• hydrogen bond

Tags

NGSS.HS-LS1-1

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• ribosome
• nucleus

Nucleotides are made up of a sugar, phosphate, and..?

• base

• nucleic acid

• cholesterol

• fatty acid

Tags

NGSS.HS-LS1-1