Portage Learning Chem 210 Test 6| Complete Solutions

Chem 210 Test 6
CORRECT ANSWERS IN RED
Question 1
In DNA, guanine always pairs with .


Thymine
Guanine
Uracil
Cytosine
Both A and
B


Question 2
DNA is built from which of the
following? Nucleosides
Genes
Purines
Nucleotide
Codons


Question 3
The double helix of DNA is stabilized mainly by .
Ionic bonds
Covalent bonds
Ion-dipole bonds
Hydrogen bonds
Hydrogen covalent bonds


Question 4
Which of the following pentose sugars is a constituent of B-DNA?

, Xylose
Ribitol
Ribose
Arabinose
2-deoxyribose


Question 5
Purines have ring(s), (each) containing nitrogen(s), whereas pyrimidines have
ring(s), (each) containing nitrogen(s).
1; 1; 1; 1
1; 2; 1; 2
2; 1; 1; 2
2; 2; 1; 1
2; 2; 1; 2


Question 6
Identify the base cytosine from among the following structures.
A
B


C


D


E


Question 7
Which of the following nucleic acids is responsible for using the encoded genetic information to produce
proteins found in living organisms?