Genes & DNA - What does DNA look like?
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What letters represent the four bases? | A, T, G, C
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| Using x-ray diffraction, what did Rosalind Franklin show the shape of DNA to be? | a spiral
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| What did Watson & Crick's DNA model look like? | a long, twisted ladder
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| What are the sides of the DNA "ladder" made of? | sugar and phosphate
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| What are the "rungs" of the DNA ladder? | a pair of bases
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| When DNA is copied, where does the DNA molecule split? | down the middle
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| DNA is made of subunits called what? | nucleotides
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| What are nucleotides made of? | a sugar, a phosphate and a base
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| Who discovered the amount of adenine in DNA always equals the amount of thymine? | Erwin Chargoff
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| What scientist made images of DNA by using x-ray diffraction? | Rosalind Franklin
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| What is the complementary strand to the DNA sequence TAGTCA? | ATCAGT
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| Along with a sugar and a phosphate, what is the third part of a nucleotide? | a base
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| What is the first step of DNA replication? | a strand of DNA splits down the middle
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| Whose research indicated that the bases in DNA must match with each other in some regular pattern? | Erin Chagraff
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| Who stated that the amount of cytosine in DNA is always equal to the amount of guanine? | Erin Chagraff
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| What are the subunits in DNA composed of? | nucleotides
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| Why do the pairs of bases match up? | because they are complimentary
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| What does the pairing of bases allow cells to do? | replicate
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| What base fits together with adenine? | thymine
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| What base fits together with cytosine? | guanine
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| The sides of the DNA ladder are formed in part by what? | phosphate
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| How often is DNA copied? | every time a cell divides
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| What are the four types of nucleotides? | adenine, thymine, guanine and cytosine
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| What is DNA? | the material that makes up genes and is found in all cells.
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| What does the statement "DNA unites all organisms" mean? | DNA is found in the cells of the entire variety of organisms on Earth.
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| What happens after a DNA strand splits down the middle for replication? | New nucleotides attach to the exposed bases of both sides, and two identical strands of DNA are formed.
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| What is another name for deoxyribonucleic acid? | DNA
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Created by:
masonteach
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