Let’s go through each question one by one, using the information from the worksheet.
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Why is DNA important? (2 reasons)
1. DNA carries instructions for building and running a living thing — like a blueprint for life.
2. DNA can make copies of itself, so when cells divide, each new cell gets the same instructions.
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What does DNA stand for?
DNA stands for
Deoxyribonucleic Acid.
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What are chromosomes made of?
Chromosomes are made of
DNA.
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HOW IT’S BUILT:
What is DNA shaped like? (two names)
1. A twisted ladder
2. A double helix
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What are the sides made of?
The sides of the DNA ladder are made of alternating
sugars and
phosphates.
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What are the rungs made of?
The rungs (or steps) are made of
two bases attached to each other.
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What are the rungs attached to?
The rungs are attached to the
sugars on the sides of the ladder.
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Why is the sugar called deoxyribose?
It’s called deoxyribose because it’s almost like ribose sugar, but it’s missing one oxygen atom. “De-” means without, so “deoxy” = without oxygen.
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How many bases make up a rung?
Each rung is made of
two bases stuck together.
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Final Answer:
- Why is DNA important? → It holds genetic instructions and can copy itself.
- What does DNA stand for? → Deoxyribonucleic Acid
- What are chromosomes made of? → DNA
- What is DNA shaped like? → Twisted ladder or double helix
- What are the sides made of? → Sugars and phosphates
- What are the rungs made of? → Two bases attached together
- What are the rungs attached to? → Sugars
- Why is the sugar called deoxyribose? → Because it’s missing an oxygen compared to ribose
- How many bases make up a rung? → Two
Parent Tip: Review the logic above to help your child master the concept of biology dna worksheet.
