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LT 6.1 a-c DNA Discovery, Structure and Replication Quiz

Last updated over 1 year ago

15 questions

6.1a I can compare a variety of DNA models and evaluate them for their effectiveness in explaining its structure and function.

1

Which diagram below best represents a segment of a normal DNA molecule?

1

Which statement best describes the structure of a DNA molecule

1

Which statement best describes a portion of the molecule represented below?

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The above figure shows the results of measuring the percentages of the four bases in the DNA of three organisms. Some of the values are missing. Based on the base pairing rule, the percentages of adenine bases in Human DNA should be around which percentage?

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Look at the three possible DNA models shown below. Make a claim and provide evidence and reasoning to explain which model is the most accurate based upon today’s understanding of the structure.

6.1b I can provide examples to illustrate how modern advances related to DNA structure and function illustrate the nature of science.

1

Which of the following discoveries were the result of Erwin Chargaff's experiments?

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Hershey and Chase took advantage of the fact that there is a unique element in DNA and in proteins. They added a radioactive version of this element into two containers, making the DNA in one container glow and the proteins in the second container glow. Looking at the image below, how did they determine that the DNA was the molecule carrying information?

1

Chargaff measured the amount of each nitrogen base present in a double stranded molecule. His discovery of [A] = [T] and [C]=[G] was critical for Watson and Crick to determine what about the placement of bases in the double stranded molecule?

1

In order to develop the model of DNA’s structure, Watson and Crick needed some vital information. One source of the information came from Chargaff’s Law which established the base-paring ratios. The other source came from Rosalind Franklin’s x-ray diffraction image. Why is the sharing of information in the scientific community vital in the development of the DNA model?

1

Which of the following statements is true regarding the discovery of the double helix?

6.1c I can describe the process of DNA replication.

1

Since replication is a semi-conserved process, this allows DNA to

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The enzyme that unzips the DNA to prepare for replication

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Which row in the chart shows the steps of DNA replication in the correct order?

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Why must DNA replication occur in cells?

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If one strand of DNA is CGGTAC, the corresponding strand would be