Short Segments of Newly Synthesized Dna Are Joined Into a Continuous Strand by

This is an image of a _____. (Activity 16A)

bacterium red blood cell phage moneran protist

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Who demonstrated that DNA is the genetic material of the T2 phage? (Activity 16A)

Franklin Hershey and Chase Meselson and Stahl Watson and Crick Darwin and Wallace

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The radioactive isotope ³²P labels the T2 phage's _____. (Activity 16A)

DNA tail base plate protein coat head

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Hershey and Chase used _____ to radioactively label the T2 phage's proteins. (Activity 16A)

³⁵S ¹⁴C ²²²Ra ³²P ⁹²U

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After allowing phages grown with bacteria in a medium that contained ³²P and ³⁵S, Hershey and Chase used a centrifuge to separate the phage ghosts from the infected cell. They then examined the infected cells and found that they contained _____, which demonstrated that _____ is the phage's genetic material. (Activity 16A)

labeled protein ... DNA labeled protein .... protein labeled DNA ... labeled protein labeled DNA .... protein labeled DNA ... DNA

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In the accompanying image, a nucleotide is indicated by the letter _____. (Activity 16B)

A B C D E

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Which of these is a difference between a DNA and an RNA molecule? (Activity 16B)

DNA contains uracil, whereas RNA contains thymine. DNA is a polymer composed of nucleotides, whereas RNA is a polymer composed of nucleic acids. DNA is double-stranded, whereas RNA is single-stranded. DNA contains five-carbon sugars, whereas RNA contains six-carbon sugars. DNA contains nitrogenous bases, whereas RNA contains phosphate groups.

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This is an image of a(n) _____. (Activity 16B)

amino acid nucleic acid thiol nucleotide none of the above

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The letter A indicates a _____. (Activity 16B)

phosphate group nucleotide nitrogenous base sugar none of the above

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A nitrogenous base is indicated by the letter _____. (Activity 16B)

A B C D E

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You can tell that this is an image of a DNA nucleotide and not an RNA nucleotide because you see a _____. (Activity 16B)

thymine nitrogenous base, not a uracil nitrogenous base sugar with two, and not three, oxygen atoms double-stranded molecule, not a single-stranded molecule phosphate group, not a uracil uracil nitrogenous base, not a thymine nitrogenous base

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Which of these nitrogenous bases is found in DNA but not in RNA? (Activity 16B)

adenine cytosine guanine thymine uracil

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Which of these is(are) pyrimidines? (Activity 16B)

A and B A, B, and C B and C B, C, and D C, D, and E

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In a nucleotide, the nitrogenous base is attached to the sugar's _____ carbon and the phosphate group is attached to the sugar's _____ carbon. (Activity 16B)

1' ... 2' 1' ... 5' 2' ... 3' 1' ... 3' 2' ... 1'

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Nucleic acids are assembled in the _____ direction. (Activity 16B)

1' to 5' 2' to 3' 5' to 3' 4' to 5' 5' to 1'

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In a DNA double helix an adenine of one strand always pairs with a(n) _____ of the complementary strand, and a guanine of one strand always pairs with a(n) _____ of the complementary strand. (Activity 16B), (Activity 16C), (Activity 16E)

guanine ... adenine cytosine ... uracil cytosine ... thymine thymine ... cytosine uracil ... cytosine

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Short segments of newly synthesized DNA are joined into a continuous strand by _____. (Activity 16D), (Activity 16F)

helicase DNA polymerase ligase primase single-strand binding protein

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After DNA replication is completed, _____. (Activity 16D), (Activity 16E), (Activity 16F)

each new DNA double helix consists of one old DNA strand and one new DNA strand each new DNA double helix consists of two new strands one DNA double helix consists of two old strands and one DNA double helix consists of two new strands each of the four DNA strands consists of some old strand parts and some new strand parts there are four double helices

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The first step in the replication of DNA is catalyzed by _____. (Activity 16E), (Activity 16F)

helicase DNA polymerase ligase primase single-strand binding protein

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The action of helicase creates _____. (Activity 16D), (Activity 16E), (Activity 16F)

primers and DNA fragments primers and replication bubbles DNA fragments and replication forks replication forks and replication bubbles DNA fragments and replication bubbles

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Why is the new DNA strand complementary to the 3' to 5' strands assembled in short segments? (Activity 16D), (Activity 16E), (Activity 16F)

the replication forks block the formation of longer strands DNA polymerase can assemble DNA only in the 3' to 5' direction DNA polymerase can assemble DNA only in the 5' to 3' direction it is more efficient than assembling complete new strands only short DNA sequences can extend off the RNA primers

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The synthesis of a new strand begins with the synthesis of a(n) _____. (Activity 16E), (Activity 16F)

single-strand binding protein Okazaki fragment poly(A) tail short pieces of DNA RNA primer complementary to a preexisting DNA strand

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Which of these is responsible for catalyzing the formation of an RNA primer? (Activity 16F)

A B C D E

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An old DNA strand is used as a _____ for the assembly of a new DNA strand. (Activity 16D), (Activity 16E), (Activity 16F)

complement primer template source of nucleotides model

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Source: http://www.hbwbiology.net/quizzes/ch16-molecular-inheritence.htm

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