Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 2 - The Nature of Molecules and the Properties of Water - Review Questions - Synthesize: 2

Answer

Si could potentially form the same kind of complicated structures as C since it is in the same column of the periodic table as C and thus has the same number of valence electrons. However, since it is in a different row, it might have enough differences from C to not be able to as useful for life as C.

Work Step by Step

From Figure 2.7, Si is more abundant than C, yet one does not hear of it being involved in making complex molecules in living things. Having C and Si in the same column of the periodic table implies similar chemistry, but the difference in row implies some important differences which might be the reason why life is not based on Si, in spite of its great abundance.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.