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Quiz On Biological DNA Double Helix Structure

This is a timed quiz. You will be given 15 seconds per question. Are you ready?

15

0%

The “double” in double helix means DNA has:

a) Two layers of paint

b) Two strands twisted together

c) Two wheels

d) Two lights

Correct! Wrong!

What shape is DNA often described as?

a) A flat circle

b) A twisted ladder (double helix)

c) A straight line

d) A square

Correct! Wrong!

What connects the two strands of DNA like the steps of a ladder?

a) Sugar molecules

b) Nitrogen base pairs

c) Metal rods

d) Water

Correct! Wrong!

DNA contains instructions for building:

a) Computers

b) Clothes

c) Living things

d) Cars

Correct! Wrong!

A double helix model helps students understand:

a) How a car engine works

b) How DNA strands fit and pair together

c) How sound travels

d) How to draw pictures

Correct! Wrong!

What is the backbone of a DNA strand made of?

a) Sugar and phosphate molecules

b) Metal

c) Plastic

d) Water

Correct! Wrong!

Which base always pairs with adenine (A)?

a) Guanine (G)

b) Thymine (T)

c) Cytosine (C)

d) Uracil (U)

Correct! Wrong!

Which base always pairs with cytosine (C)?

a) Adenine (A)

b) Guanine (G)

c) Thymine (T)

d) Uracil (U)

Correct! Wrong!

Quiz On Biological DNA Double Helix Structure

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