CHEM 210 Biochemistry Module 6 Exam 2026 Portage Learning Questions and Verified Answers graded A+

CHEM 210 Biochemistry Module 6 Exam 2026 Portage
Learning Questions and Verified Answers graded A+

In RNA, guanine always pairs with .
- Thymine
- Guanine
- Uracil
- Cytosine

Cytosine

In DNA, adenine always pairs with .
A. Thymine
B. Guanine
C. Uracil
D. Cytosine

A. Thymine

DNA is built from which of the following?

A. Nucleosides
B. Genes
C. Purines
D. Nucleotide
E. Codons

D. Nucleotide

The double helix of DNA is stabilized mainly by .

, A. Ionic bonds
B. Covalent bonds
C. Ion-dipole bonds
D. Hydrogen bonds
E. Hydrogen covalent bonds

D. Hydrogen bonds

Which of the following pentose sugars is a constituent of tRNA?

A. Xylose
B. Ribitol
C. 2-deoxyribose
D. Arabinose
E. Ribose

E. Ribose

Which of the following pentose sugars is a constituent of DNA?

A. Xylose
B. Ribitol
C. 2-deoxyribose
D. Arabinose
E. Ribose

C. 2-deoxyribose

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

A. 1; 1; 1; 1
B. 1; 2; 2; 2
C. 2; 2; 1; 2
D. 2; 1; 1; 2
E. 2; 2; 1; 1

B. 1; 2; 2; 2

Identify the base guanine from among the following structures.

D

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

A. Peptide nucleic acid

B. Ribonucleic acid