Introduction to DNA

All _____ have DNA.

• Solid objects

• Human cells

• Living organisms

• Chemical compounds

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NGSS.MS-LS3-1

NGSS.MS-LS3-2

NGSS.MS-LS4-4

The term "double helix" refers to:

• The type of cell that contains DNA.

• The number of DNA molecules in each cell

• The size of a DNA molecule

• The shape of a DNA molecule

How many chromosomes do humans have?

• 23

• 46

• 100

• 20,000

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NGSS.HS-LS3-1

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

• amino acids

• nucleotides

• fatty acids

• polysaccharides

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 organelle is DNA usually found in?

• cell membrane

• vacuole

• chloroplast

• nucleus

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NGSS.MS-LS3-1

The drawing shows the structure of what molecule?

• A DNA molecule

• A lipid molecule

• A carbohydrate molecule

• A protein molecule

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NGSS.HS-LS1-1

In what phase of the cell cycle does DNA replication take place?

• G1

• S

• G2

• M

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base

• sugar, oxygen, nitrogen base

• sugar, phosphate, nitrogen base

• sugar, phosphate, protein

Name this structure

• double helix

• nucelotide

• twisted ladder

• hydrogen bond

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NGSS.HS-LS1-1