Genes Structure & Function

How many DNA molecules make up a chromosome?

• 1
• 2
• 23
• 46

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Where does an organism get its sex chromosomes?

• common ancestor

• grandparents

• parents

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The drawing shows the structure of what molecule?

• A DNA molecule
• A lipid molecule
• A carbohydrate molecule
• A protein molecule

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What is a gene?

• A bundle (like a hot dog bun) that the DNA is packed into
• something inside the nucleus
• a piece of DNA
• all of your DNA

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Where do scientist think genes came from originally?

• star dust

• rocks

• bacteria

• air

A single of strand of DNA forms a ____________ .

• nucleosome

• chromosome

• telomere

• centromere

In DNA, Thymine pairs with ______.

• Cytosine

• Adenine

• Guanine

• Uracil

DNA holds the code for

• making lipids

• making carbohydrates

• making proteins

• making sugar

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DNA has a _____________ structure. 

• double helix
• single strand
• ring 
• chain

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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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