McGraw-Hill Online Learning Center Test

McGraw-Hill Online Learning Center Test


1. Review the image and answer the following questions.

What is true about hydrogen bonds within the DNA molecule?

A. Hydrogen bonds hold the sugar-phosphate backbone together.
B. Hydrogen bonds occur within the deoxyribose molecule.
C. Hydrogen bonds hold the two halves of the DNA double helix together.
D. Hydrogen bonds are only important during the mRNA transcription process.


2. What is the proper pairing of bases within the DNA double helix?

A. cytosine-adenine; thymine-guanine
B. cytosine-guanine; adenine-thymine
C. guanine-adenine; thymine-cytosine
D. All of these are correct; base-pairing is a random process.
Copyright ©2000 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.
For further information about this site contact mhhe_webmaster@mcgraw-hill.com
or let us know what you think by filling out our site survey.

Corporate Link