CAMPBELL BIOLOGY W/MASTERINGBIO CODE >
16th Edition
ISBN: 9781323573457
Author: Campbell
Publisher: PEARSON C
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Chapter 3, Problem 12TYU
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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How do cats drink? Scientists using high-speed video have shown that cats use an interesting technique to drink substances water and Four times a second, the cal touches the tip of its tongue the water and draws a column of water up into its mouthbefore pull the water back down. Describe how the properties of water allow cats to drink in this including how water's molecular structure contributes to the process Match the terms in the left column to the appropriate blanks in the sentences on the right. Terms can be used once, more than once, or not at
EVOLUTION CONNECTION The percentages of naturallyoccurring elements making up the human body (see Table 2.1)are similar to the percentages of these elements found in otherorganisms. How could you account for this similarity amongorganisms?
Biochemistry - calculations
1. 500 mL of a 0.1 sodium phosphate buffer with pKa= 7.21, is diluted
a) How would you dilute this buffer 100 times to make a final volume of 50 mL? Show the ratio to be added together.
b) Calculate the pH of the buffer when it is diluted with dH2O
c) Calculate the pH of the buffer when it is diluted with 0.3 M KCl
2. What is the normality of a 5 M phosphoric acid (SG = 1.88 g/cm3; 85% solution has a Mr of 98 g/mole)?
Chapter 3 Solutions
CAMPBELL BIOLOGY W/MASTERINGBIO CODE >
Ch. 3.1 - MAKE CONNECTIONS What is electronegativity, and...Ch. 3.1 - WHAT IF? What would be the effect on the...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 - Explain what happens to the concentration...Ch. 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 - MAKE CONNECTIONS What do climate change (see...Ch. 3 - EVOLUTION CONNECTION This chapter explains how the...Ch. 3 - Prob. 10TYUCh. 3 - WRITE ABOUT A THEME: ORGANIZATION Several emergent...Ch. 3 - SYNTHESIZE YOUR KNOWLEDGE How do cats drink?...
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- Test Your Understanding Know and Comprehend 11. Which of the following cannot function as a buffer? (a) phosphoric acid, a weak acid (b) sodium hydroxide, a strong base (c) sodium chloride, a salt that ionizes completely (d) a and c (e) b and carrow_forwardChemistry 1. Calculate isoelectric point of asp, leu, tyr, his and lys. 2. Why do the pK values of ionizable groups differ between free amino acids and amino acid residues in polypeptides? 3. List some covalent modifications of amino acids in proteins. 4. generic amino acid and identify the α carbon and its substituents.arrow_forwardWhich One is NOT TRUE about membranes? a. Membranes rich in fatty acids containing one or more double bonds are more fluid than membranes with no double bonds in fatty acids. b. If cholesterol is present in membranes, the fluidity of membranes will be reduced at moderate and warm temperatures. c. If cholesterol is present in membranes, the fluidity will remain intact at low temperatures. d. If the fatty acids with double bond are present in membranes, the membrane will be viscous.arrow_forward
- Discuss Concepts You place a metal pan full of water on the stove and turn on the heat. After a few minutes, the handle is too hot to touch but the water is only warm. How do you explain this observation?arrow_forwardManufacturers make carbonated drinks by forcing pressurized carbon dioxide gas into flavored water. A chemical reaction between water molecules and some of the CO2 molecules creates hydrogen ions (H+) and bicarbonate, which is a buffer. In your opinion, is this reaction likely to raise the pH of a soda above 7, or lower it? Give your reasoning.arrow_forward1. How would it affect organisms living in cold climates if oil or alcohol were their main body fluid?2. How do you think the cohesive nature of water relates to its evaporation?3. Describe in detail an experiment you could conduct to test whether another substance could replace water.arrow_forward
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- explain the chemical reaction that occurs water molecules dissociate and reform. why is these chemical reactions the basis of the pH scale?arrow_forwardChemistry Write the complimentary (1) DNA nucleic acid sequence and (2) RNA nucleic acid sequence that would pair with this DNA sequence: ATTAGATCAT. We know that amino acids and proteins can move in a certain direction in an electric field when they are in solutions of appropriate pH. Would you expect lipid molecules to move in an electric field? Do you expect nucleic acids and nucleotides (DNAs and segments of DNAs and RNAs) to move in an electric field? Why or why not?arrow_forwardWhat is the importance of acids and bases in our daily activities? State examples. What is the pH of the biological cell? Why is buffer important to biological cells? What will happen to living things if the cellular fluids are not buffered? Why?arrow_forward
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