The Action Of Helicase Creates _____., Free Biology Flashcards About Chapter 16 And 17

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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 _____.

You are watching: The action of helicase creates _____.

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Which of these is(are) pyrimidines?

In a nucleotide, the nitrogenous base is attached to the sugar”s _____ carbon and the phosphate group is attached to the sugar”s _____ carbon.

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.

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.

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This is an image of a _____.

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.

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In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific community?

Select all that apply.

– Chromosomes are found in the nucleus.

– Genes are located on chromosomes.

– Chromosomes are made up of protein and nucleic acid.

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In the early 1950s, many researchers were racing to describe the structure of DNA using different approaches. Which of the following statements is true?

Jim Watson and Francis Crick built theoretical models, incorporating current knowledge about chemical bonding and X-ray data.

Early, flawed DNA models proposed by Watson and Crick and by Linus Pauling correctly described which property of DNA?

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What did Rosalind Franklin’s famous photo 51 show?

Erwin Chargaff observed that the proportions of adenine (A) and thymine (T) bases were always equal, as were the proportion of guanine (G) and cytosine (C). Chargaff’s observation suggests which of the following statements?

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Does the distribution of bases in sea urchin DNA and salmon DNA follow Chargaff’s rules?

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