Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 11TYU
SYNTHESIZE YOUR KNOWLEDGE
How do cats drink? Scientists using high speed video have shown that cats use an interesting technique to drink aqueous substances like water and milk. Four times a second, the cat touches the tip of its tongue to the water and draws a column of water up into its mouth (as you can see in the photo), which then shuts before gravity can pull the water back down. Describe how the properties of water allow cats to drink in this fashion, including how water's molecular structure contributes to the process.
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Chemistry
Exercise C: Spectrophotometry
Watch this video to learn how a spectrophotometer works. For additional information, you can read about using a spectrophotometer in your textbook’s “BioSkills 8: Using Spectrophotometry”.
A spectrophotometer was used to determine the absorbance of 2 pigments between 400 nm and 710 nm, the range of wavelengths that is associated with visible light. The table below contains the absorbance values for each pigment (“Pigment 1” and “Pigment 2”) at wavelengths separated by approximately 10 nm.
Wavelength
Pigment 1
Pigment 2
400
0.097
0.117
410
0.088
0.127
420
0.099
0.143
430
0.113
0.158
440
0.129
0.181
450
0.158
0.184
460
0.145
0.171
470
0.085
0.164
480
0.041
0.143
490
0.024
0.089
500
0.022
0.048
510
0.019
0.023
520
0.018
0.014
530
0.020
0.010
540
0.019
0.008
550
0.020
0.008
560
0.022
0.009
570
0.023
0.008…
A fish swims into cold water. How should it regulate so that the cell membrane continues to have the same fluidity as usual? (more than one answer may be correct)
which are correct
a.increase the length of lipids with short hydrocarbon tails
b.increase the number of steroids in the cell membrane
c.more saturated lipids in the membrane
d.reduce the proportion of lipids with short hydrocarbon tails
e.more unsaturated lipids in the cell membrane
Chapter 3 Solutions
Campbell Biology (10th Edition)
Ch. 3.1 - MAKE CONNECTIONS What is electronegativity, and...Ch. 3.1 - Why is it unlikely that two neighboring water...Ch. 3.1 - WHAT IF? What would be the effect on the...Ch. 3.2 - Prob. 1CCCh. 3.2 - Prob. 2CCCh. 3.2 - WHAT IF? A water strider (an insect that can walk...Ch. 3.2 - WHAT IF? A water strider (an insect that can walk...Ch. 3.2 - Prob. 5CCCh. 3.3 - Compared with a basic Solution at pH 9, the same...Ch. 3.3 - HCl is a strong acid that dissociates in water:...
Ch. 3.3 - Prob. 3CCCh. 3.3 - Prob. 4CCCh. 3 - DRAW IT Label a hydrogen bond and a polar...Ch. 3 - Describe how different types of solutes dissolve...Ch. 3 - Prob. 3.3CRCh. 3 - Which of the following is a hydrophobic material?...Ch. 3 - Prob. 2TYUCh. 3 - Measurements show that the pH of a particuiar lake...Ch. 3 - What is the hydroxide ion concentration of the...Ch. 3 - A slice of pizza has 500 kcal. If we could burn...Ch. 3 - DRAW IT Draw the hydration shells that form around...Ch. 3 - In agricultural areas, farmers pay close attention...Ch. 3 - EVOLUTION CONNECTION This chapter explains how the...Ch. 3 - Prob. 9TYUCh. 3 - WRITE ABOUT A THEME: ORGANIZATION Several emergent...Ch. 3 - SYNTHESIZE YOUR KNOWLEDGE How do cats drink?...
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