Exam 13: Passing on Lifes Information: Dna Structure and Replication

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Watson and Crick's experiments involved isolating DNA, generating X-ray diffraction images of the DNA, and building a model of its structure.

(True/False)

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Question 21

A key part of DNA's function is to encode information. In considering how information-rich a particular molecule might be, a question is how many different sequences are possible in a particular length of the molecule. In the case of DNA the four different nucleotides can be arranged in any order. How many different sequences are possible for a DNA strand three nucleotides long?

(Multiple Choice)

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Question 22

The two strands of a double helix of DNA are linked by what kind of bond?

(Multiple Choice)

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Question 23

What is the cause of Huntington disease?

(Multiple Choice)

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Question 24

A trinucleotide repeat refers to:

(Multiple Choice)

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Question 25

The structure of DNA allows the molecule to replicate itself.

(True/False)

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Question 26

The building blocks of DNA are:

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Question 27

The average mutation rate for DNA replication is 1 mutation for every 10 billion (10,000,000,000) nucleotides of DNA replicated. Yet DNA polymerase makes a mistake during replication at an average of 1 in 100,000 nucleotides. What does this say about DNA replication?

(Multiple Choice)

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Question 28

Imagine that the DNA replication error rate for a strain of bacterium that has a defective repair mechanism is 1 in 10 million. If the cell's genome is 5 million nucleotide pairs, how often will the genome sustain a mutation in this strain, keeping in mind that both strands of a DNA molecule are replicated at once?

(Multiple Choice)

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Question 29

What is the relationship between mutations and cancer?

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Question 30

What is the function of DNA polymerase?

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Question 31

Watson and Crick discovered:

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Question 32

The structure of DNA allows the molecule to store information.

(True/False)

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Question 33

Which type of mutation will have the most impact from an evolutionary point of view?

(Multiple Choice)

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Question 34

Refer to the figure below, and then answer the question that follows. -A mistake is made during DNA replication, so there is incorrect base pairing in the DNA. Depending on how the replication repair mechanism fixes this problem, a point mutation may or may not result. What might the replication repair mechanism do, and would it result in a point mutation?

(Multiple Choice)

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Question 35

What is the relationship between DNA and proteins?

(Multiple Choice)

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Question 36

What is one way that incorrect nucleotides are removed from a newly synthesized molecule of DNA?

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Question 37

Which of the following is not a component of DNA nucleotides?

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Question 38

Errors never occur in DNA replication because the DNA polymerases edit out mistakes.

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Question 39

How is the information that specifies a protein stored in DNA?

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Question 40

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Exam 13: Passing on Lifes Information: Dna Structure and Replication

Watson and Crick's experiments involved isolating DNA, generating X-ray diffraction images of the DNA, and building a model of its structure.

The two strands of a double helix of DNA are linked by what kind of bond?

What is the cause of Huntington disease?

A trinucleotide repeat refers to:

The structure of DNA allows the molecule to replicate itself.

The building blocks of DNA are:

The average mutation rate for DNA replication is 1 mutation for every 10 billion (10,000,000,000) nucleotides of DNA replicated. Yet DNA polymerase makes a mistake during replication at an average of 1 in 100,000 nucleotides. What does this say about DNA replication?

What is the relationship between mutations and cancer?

What is the function of DNA polymerase?

Watson and Crick discovered:

The structure of DNA allows the molecule to store information.

Which type of mutation will have the most impact from an evolutionary point of view?

What is the relationship between DNA and proteins?

What is one way that incorrect nucleotides are removed from a newly synthesized molecule of DNA?

Which of the following is not a component of DNA nucleotides?

Errors never occur in DNA replication because the DNA polymerases edit out mistakes.

How is the information that specifies a protein stored in DNA?

Science As a Way of Learning: a Guide to the Natural World

Fundamental Building Blocks: Chemistry, Water, and Ph

Lifes Components: Biological Molecules

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Lifes Mainspring: an Introduction to Energy

Vital Harvest: Deriving Energy From Food

The Green Worlds Gift: Photosynthesis

The Links in Lifes Chain: Genetics and Cell Division

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

How Proteins Are Made: Genetic Transcription, Translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, Evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late, Traveling Far: the Evolution of Human Beings

Viruses, Bacteria, Archaea, and Protists: the Diversity of Life 1

Fungi : the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, Skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, Nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

How the Baby Came to Be: Human Reproduction

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

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