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Portage Learning Chem 210 Module EXAM 6

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Portage Learning Chem 210 Module EXAM 6 Question 1 3 / 3 pts In DNA, adenine always pairs with . Correct! Thymine Guanine Uracil Cytosine Both A and B Question 2 3 / 3 pts DNA is built from which of the following? Nucleosides Genes Purines Correct! Nucleotide Codons Question 3 ...

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Portage Learning Chem 210 Module EXAM 6

Question 1
pts

In DNA, adenine always pairs with .

Correct!

Thymine

Guanine

Uracil

Cytosine


Both A and B

Question 2
pts
DNA is built from which of the

following? Nucleosides

Genes

Purines
Correct!

Nucleotide

Codons

Question 3
pts
The double helix of DNA is stabilized mainly by .

Ionic bonds

Covalent bonds

Ion-dipole bonds
Correct!

Hydrogen bonds

Hydrogen covalent bonds

,Question 4
pts
Which of the following pentose sugars is a constituent of DNA?

Xylose

Ribitol
Correct!

2-deoxyribose

Arabinose

Ribose

Question 5
pts
Pyrimidines have ring(s), (each) containing nitrogen(s), whereas purines have
ring(s), (each) containing nitrogen(s).

1; 1; 1; 1
Correct!

1; 2; 2; 2

2; 2; 1; 2

2; 1; 1; 2

2; 2; 1; 1

Question 6
pts

Identify the base guanine from among the following structures.

, A.




B.




C.

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