Human Biology Concepts and Current Issues; Modified MasteringBiology with Pearson EText -- ValuePack Access Card -- for Human Biology: Concepts and Current Issues
8th Edition
ISBN: 9780134560779
Author: Johnson, Michael D.
Publisher: Pearson Education
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Textbook Question
Chapter 2, Problem 5TY
Which of the following substances has the lowest hydrogen ion concentration?
a. water (pH 7)
b. bleach (pH 13)
c. baking soda (pH 9)
d. vinegar (pH 3)
e. black coffee (pH 5)
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Chapter 2 Solutions
Human Biology Concepts and Current Issues; Modified MasteringBiology with Pearson EText -- ValuePack Access Card -- for Human Biology: Concepts and Current Issues
Ch. 2 -
1. Who do you think should be responsible for...Ch. 2 - Prob. 2QCCh. 2 - Describe the electrical charges and relative...Ch. 2 -
2. Explain why two atoms of hydrogen tend to...Ch. 2 -
3. Explain why polar and charged molecules tend...Ch. 2 - How is a covalent bond different from an ionic...Ch. 2 - Compare and contrast potential energy and kinetic...Ch. 2 - Distinguish between saturated and unsaturated...Ch. 2 - Describe the process known as dehydration...Ch. 2 - Explain why proteins come in an almost unlimited...
Ch. 2 -
9. Discuss the importance of enzymes in living...Ch. 2 -
10. Describe the role of ATP in energy transfer...Ch. 2 - If a molecule of starch is repeatedly hydrolyzed,...Ch. 2 - Which of these molecules would be described as...Ch. 2 -
3. _______bonds form between the oxygen and...Ch. 2 - 13C and 14C are ______ of carbon. a. isotopes b....Ch. 2 - Which of the following substances has the lowest...Ch. 2 - When sugar is dissolved in water, sugar is the...Ch. 2 - A monosaccharide is to a polysaccharide as an...Ch. 2 -
8. Which of these bonds is the easiest to...Ch. 2 -
9. The primary structure of a protein is...Ch. 2 -
10. DNA ultimately contains the instructions for...Ch. 2 - If one strand of DNA has the sequence...Ch. 2 - Which of the following is true regarding the...Ch. 2 -
13. Which of the following is true regarding...Ch. 2 - Synthesis of proteins requires the input of...Ch. 2 - Prob. 15TYCh. 2 - Prob. 1AWKCh. 2 - Prob. 2AWKCh. 2 - Many people use cholesterol-lowering drugs to...Ch. 2 - Prob. 4AWKCh. 2 -
5. Coca-Cola is a very acidic drink; its pH is...
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- Manufacturers 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_forwardName three vital properties of water in living cells.arrow_forwardUsing a pH meter, you find the pH of an unknown solution to be 8.0. How would you describe this solution? a. weakly acidic b. strongly acidic c. weakly basic d. strongly basicarrow_forward
- Magnesium has an atomic number of 12. Which of the following statements is true of a neutral magnesium atom? a. It has 12 protons, 12 electrons, and 12 neutrons. b. It has 12 protons, 12 electrons, and six neutrons. c. It has six protons, six electrons, and no neutrons. d. It has six protons, six electrons, and six neutrons.arrow_forwardWhich of the following are properties of water that make itimportant for living cells?(a) It is a polar molecule that can form solutions.(b) It has high surface tension.(c) It has a high specific heat.(d) It can participate in dehydration and hydrolysisreactions.(e) All of the above.arrow_forwardWhich of the following describes a buffer?  A. The measure of the amount of hydrogen ions in a liquid  B. A set of chemicals that can keep the pH of a solution stable by alternately donating and accepting the ions that contribute to pH  C. A substance that releases hydrogen ions in water  D. A substance that accepts hydrogen ions in waterarrow_forward
- Which of the following best describes a solution with a pH of 9?   A. it would have 100 times more free hydrogen ions than a solution with a pH of 7  B. it would have half as many hydrogen ions as a solution with a pH of 7  C. it would be classified as a base  D. it would be classified as an acidarrow_forwardWhich of the following statements is true? a. Acids and bases cannot mix together. b. Acids and bases will neutralize each other. c. Acids, but not bases, can change the pH of a solution. d. Acids donate hydroxide ions (OH–); bases donate hydrogen ions (H+).arrow_forwardWhich two statement about the substances in this experiment are true? A. Chalk is harder than quartz. B. Isopropyl alcohol boils more easily than vegetable oil. C. Water has a higher surface tension than soapy water. D. Saltwater has a higher surface tension than plain water.arrow_forward
- A solution with a pH of 6 has a ____ difference in H ion concentration than a solution with a pH of 10. If a solution has a concentration of 10^-7 OH ions, how many H ions does it have?arrow_forwardA solution at pH 7 is considered neutral because (a) its hydrogen ion concentration is 0 mol/L (b) its hydroxide ion concentration is 0 mol/L (c) the product of its hydrogen ion concentration and its hydroxide ion concentration is 0 mol/L (d) its hydrogen ion concentration is equal to its hydroxide ion concentration (e) it is nonpolararrow_forwardWhich of the following statements about chemicalbonds is true?a. Covalent bonds are stronger than ionic bonds.b. Hydrogen bonds occur between two atoms ofhydrogen.c. Bonding readily occurs between nonpolar andpolar molecules.d. A molecule of water is unlikely to bond with anion.arrow_forward
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