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DNA

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Questions and Answers

What component of a nucleotide is responsible for its negative charge?

Hydrogen bonds

Nitrogen-containing base

Pentose sugar

Phosphate group (correct)

Which nitrogen base is found in RNA but not in DNA?

Thymine

Uracil (correct)

Cytosine

Adenine

What is the primary role of ATP in cells?

Regulate cell division

Facilitate protein synthesis

Act as an energy currency (correct)

Store genetic information

In the formation of polynucleotide chains, what type of bond connects the nucleotides?

Phosphodiester bond Signup and view all the answers

During which phase do polynucleotides form in DNA and RNA?

Interphase Signup and view all the answers

How are the two polynucleotide strands of DNA oriented relative to each other?

Anti-parallel Signup and view all the answers

Which process occurs during the hydrolysis of ATP?

Release of energy Signup and view all the answers

What type of chemical reaction links the components of a nucleotide?

Condensation Signup and view all the answers

What is the backbone structure of DNA composed of?

Sugar and phosphate groups Signup and view all the answers

Which of the following is a correct pairing of nitrogenous bases in DNA?

Adenine - Thymine Signup and view all the answers

What type of bond holds the two strands of DNA together?

Hydrogen bonds Signup and view all the answers

Which base pairs with thymine in DNA?

Adenine Signup and view all the answers

What is the primary function of the sugar-phosphate backbone in DNA?

To provide structural stability Signup and view all the answers

Why is the stability of DNA important?

It ensures genetic information remains unchanged Signup and view all the answers

During DNA replication, what is the role of DNA helicase?

To unwind the double helix Signup and view all the answers

What type of replication produces two identical DNA molecules?

Semi-conservative replication Signup and view all the answers

Which enzyme catalyzes the formation of phosphodiester bonds during replication?

DNA ligase Signup and view all the answers

How do complementary base pairs contribute to the fidelity of DNA replication?

They ensure specific pairing, reducing mistakes Signup and view all the answers

What structural feature protects DNA from enzymes?

Double helix structure Signup and view all the answers

What happens to the strands of DNA during the unwinding process in replication?

They separate into single strands Signup and view all the answers

DNA

Choose a study mode

Podcast

Questions and Answers

What component of a nucleotide is responsible for its negative charge?

Which nitrogen base is found in RNA but not in DNA?

What is the primary role of ATP in cells?

In the formation of polynucleotide chains, what type of bond connects the nucleotides?

During which phase do polynucleotides form in DNA and RNA?

How are the two polynucleotide strands of DNA oriented relative to each other?

Which process occurs during the hydrolysis of ATP?

What type of chemical reaction links the components of a nucleotide?

What is the backbone structure of DNA composed of?

Which of the following is a correct pairing of nitrogenous bases in DNA?

What type of bond holds the two strands of DNA together?

Which base pairs with thymine in DNA?

What is the primary function of the sugar-phosphate backbone in DNA?

Why is the stability of DNA important?

During DNA replication, what is the role of DNA helicase?

What type of replication produces two identical DNA molecules?

Which enzyme catalyzes the formation of phosphodiester bonds during replication?

How do complementary base pairs contribute to the fidelity of DNA replication?

What structural feature protects DNA from enzymes?

What happens to the strands of DNA during the unwinding process in replication?

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