Portage Learning Chem 210 - Module 6 exam

Portage Learning Chem 210 - Module 6 exam
Question 1
pts

In RNA, guanine always pairs with .

Thymin
e
Guanin
e
Cytosin
e Uracil
Both A and B
CYSTOSINE
Question 2
pts

DNA is built from which of the following?

Nucleoside
s Genes
Purines
Nucleotide
Codons
NUCLEOTIDE
Question 3
pts

The Z-form helix of DNA is stabilized mainly by .

Ionic bonds
Covalent
bonds
Hydrogen
bonds Ion-
dipole bonds
Hydrogen covalent bonds
HYDROGEN BONDS

,Question 4
pts

, Which of the following pentose sugars is a constituent of mRNA?




Ribos
e
Xylos
e
Ribito
l
2-
deoxyribose
Arabinose
Question
RIBOSE 5
pts



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
2; 2; 1; 2




Question 6
pts


Identify the base guanine from among the following structures.