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DNA Structure and Heredity Quiz

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Questions and Answers

Which statement about base pairing in DNA is correct?

Thymine always pairs with Cytosine via 3 hydrogen bonds.

Adenine pairs with Guanine via 2 hydrogen bonds.

Guanine pairs with Thymine via 3 hydrogen bonds. (correct)

A small base pairs with a large base to keep the strands far apart.

In double-stranded DNA, the strands run in opposite directions. Which direction does the 5’ end point towards?

The 3’ end of the complementary strand. (correct)

The 3’ end of the same strand.

The 5’ end of the same strand.

The 5’ end of the complementary strand.

What enzyme is responsible for unwinding the double helix during DNA replication?

DNA ligase

Primase

DNA polymerase

Helicase (correct)

During DNA replication, which enzyme is responsible for synthesizing short RNA primers?

Primase Signup and view all the answers

What is the function of DNA ligase in DNA replication?

Joining Okazaki fragments on the lagging strand Signup and view all the answers

Which enzyme is responsible for proofreading and correcting errors in newly synthesized DNA?

DNA polymerase Signup and view all the answers

DNA Structure and Heredity Quiz

Choose a study mode

Podcast

Questions and Answers

Which statement about base pairing in DNA is correct?

In double-stranded DNA, the strands run in opposite directions. Which direction does the 5’ end point towards?

What enzyme is responsible for unwinding the double helix during DNA replication?

During DNA replication, which enzyme is responsible for synthesizing short RNA primers?

What is the function of DNA ligase in DNA replication?

Which enzyme is responsible for proofreading and correcting errors in newly synthesized DNA?

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