This passage is adapted from J. D. Watson and F. H. C. Crick

This passage is adapted from J. D. Watson and F. H. C. Crick

9th - 12th Grade

10 Qs

quiz-placeholder

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This passage is adapted from J. D. Watson and F. H. C. Crick

This passage is adapted from J. D. Watson and F. H. C. Crick

Assessment

Quiz

English

9th - 12th Grade

Hard

Created by

Althea George

Used 8+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The authors use the word “backbone” in lines 3 and 39 to indicate that

only very long chains of DNA can be taken from an organism with a spinal column

the main structure of a chain in a DNA molecule is composed of repeating units.

a chain in a DNA molecule consists entirely of phosphate groups or of sugars.

nitrogenous bases form the main structural unit of DNA.

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A student claims that nitrogenous bases pair randomly with one another. Which of the following statements in the passage contradicts the student’s claim?

Lines 5-6 (“To each... types”)

Lines 9-10 (“So far... irregular”)

Lines 23-25 (“The bases... other”)

Lines 27-29 (“One member... chains”)

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In the second paragraph (lines 12-19), what do the authors claim to be a feature of biological interest?

The chemical formula of DNA

The common fiber axis

The X-ray evidence

DNA consisting of two chains

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The authors’ main purpose of including the information about X-ray evidence and density is to

establish that DNA is the molecule that carries the genetic information

present an alternate hypothesis about the composition of a nucleotide.

provide support for the authors’ claim about the number of chains in a molecule of DNA.

confirm the relationship between the density of DNA and the known chemical formula of DNA.

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

26 Based on the passage, the authors’ statement “If a pair consisted of two purines, for example, there would not be room for it” (lines 29-30) implies that a pair

of purines would be larger than the space between a sugar and a phosphate group.

of purines would be larger than a pair consisting of a purine and a pyrimidine.

of pyrimidines would be larger than a pair of purines

consisting of a purine and a pyrimidine would be larger than a pair of pyrimidines.

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The authors’ use of the words “exact,” “specific,” and “complement” in lines 47-49 in the final paragraph functions mainly to

confirm that the nucleotide sequences are known for most molecules of DNA.

counter the claim that the sequences of bases along a chain can occur in any order

support the claim that the phosphate-sugar backbone of the authors’ model is completely regular.

emphasize how one chain of DNA may serve as a template to be copied during DNA replication.

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Based on the table and passage, which choice gives the correct percentages of the purines in yeast DNA?

17.1% and 18.7%

17.1% and 32.9%

18.7% and 31.3%

31.3% and 32.9%

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