Ap Bio Chapter 3 Reading Guide Answers
Affiliate iii: Water and Life
Copyright © 2022 Pearson Education, Inc. - i -
Chapter 3: Water and Life
3.1 Explicate how hydrogen bonding results from polar covalent bonds.
three.two Identify four backdrop of water that are important for life and describe how they upshot
from hydrogen bonding.
3.3 Differentiate between an acrid and a base; define pH and draw how information technology affects the
processes of life.
Living systems depend on backdrop of water that result from its polarity and hydrogen
bonding. As you lot work through this chapter, you will come up to understand how these properties
impact life processes. Be sure you lot understand the concept of determining pH as well as its
biological significance.
Study Tip: Figure 3.one in your text gets at the cadre of why water is such a remarkable compound.
Read and report the entire figure, and thenorthward use the information to help yous answer the questions that
follow.
Concept 3.i Polar covalent bonds in water molecules result in hydrogen bonding
LO three.i: Explain how hydrogen bonding results from polar covalent bonds.
1. Study the water molecules below. On the central molecule, fiftyabeastwardl oxyone thousandenorthward (O) and hydroyarden
(H). Now, add + and − signs to indicate the charged regions of each molecule. And so,
indicate the hydrogen bonds.
Each water molecule can
hydrogen-bond to several
others; these associations are
constantly changing.
Regions of neighboring h2o molecules
with the reverse partial charges are
attracted to each other, forming hydrogen
bonds.
Oxygen can form two
hydrogen bonds.
The charged regions in a
water molecule are due to
its polar covalent bonds.
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