Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 13CYR
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
a. Acids dissociate in water to give hydrogen ions and an anion.
b. As a solution’s pH rises, it becomes more acidic.
c. A buffer is a system of chemicals that resists a change in pH.
d. A solution with a pH of 10 has more hydrogen ions than a solution with a pH of 2.
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Which 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 water
Which 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+).
A pH of 3 is a. basic b. neutral c. acidicd. a buffer
Chapter 2 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 2.1 - What are atoms?Ch. 2.1 - How do the three types of subatomic particles...Ch. 2.1 - What is an element?Ch. 2.1 - 4. How are elements arranged in the periodic...Ch. 2.1 - What are isotopes?Ch. 2.2 - What is a mixture?Ch. 2.2 - 2. How do the three types of mixtures differ?
Ch. 2.2 - Prob. 3QCCh. 2.2 - What is an ionic bond?Ch. 2.2 - 5. How is an ionic bond formed?
Ch. 2.2 - 6. How do polar and nonpolar covalent bonds...Ch. 2.2 - What are hydrogen bonds? Between which types of...Ch. 2.3 - Prob. 1QCCh. 2.3 - What are the differences between the three types...Ch. 2.3 - How do endergonic and exergonic reactions differ?Ch. 2.3 - 4. What are the differences between the three main...Ch. 2.3 - What factors can influence the rate of a chemical...Ch. 2.3 - 6. What is an enzyme, and what is its function?
Ch. 2.4 - What four properties of water make it a good...Ch. 2.4 - 2. Which molecules or compounds are likely to be...Ch. 2.4 - What are acids and bases?Ch. 2.4 - What is the pH scale? Which pH values are...Ch. 2.4 - What is the effect of a buffer on a solution?Ch. 2.4 - What is a salt?Ch. 2.4 - 7. What does an electrolyte do in a solution?
Ch. 2.5 - 1. How do polymers and monomers differ?
Ch. 2.5 - 2. How do monosaccharides, disaccharides, and...Ch. 2.5 - How are two monosaccharides linked to form a...Ch. 2.5 - Prob. 4QCCh. 2.5 - 5. How do phospholipids and triglycerides differ?
Ch. 2.5 - What are steroids?Ch. 2.5 - Prob. 7QCCh. 2.5 - How are amino acids linked to form peptides and...Ch. 2.5 - 9. What are the four levels of structural...Ch. 2.5 - 10. What are the components and roles of ATP?
Ch. 2.5 - 11. How do DNA and RNA differ?
Ch. 2 - Prob. 1CYRCh. 2 - Fill in the blanks: Isotopes are atoms with the...Ch. 2 - 3. Which of the following statements correctly...Ch. 2 - 4. Explain the difference between an ionic and a...Ch. 2 - Identify each of the following molecules or...Ch. 2 - What are hydrogen bonds, and how do they form?Ch. 2 - Prob. 7CYRCh. 2 - Prob. 8CYRCh. 2 - Which of the following would not result in an...Ch. 2 - 10. An enzyme is a:
a. biological catalyst that...Ch. 2 - Prob. 11CYRCh. 2 - With respect to their solubility in water,...Ch. 2 - Mark the following statements as true or false. If...Ch. 2 - A salt is: a. a metal cation bonded to a nonmetal...Ch. 2 - 15. Compare and contrast the structures of...Ch. 2 - 16. Mark the following statements as true or...Ch. 2 - 17. Why is it important for a protein to maintain...Ch. 2 - Which of the following is not part of a...Ch. 2 - 19. Mark the following properties as belonging to...Ch. 2 - Which of the following statements is/are true...Ch. 2 - 1. In certain types of radioactive decay, the...Ch. 2 - Considering that water is a main component of the...Ch. 2 - 3. Explain why monosaccharides are polar and fatty...Ch. 2 - 1. The polysaccharide cellulose is not digestible...Ch. 2 - Some claim that the pH of your blood can be...Ch. 2 - Prob. 3AYKACh. 2 - Prob. 4AYKB
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- Which of the following solutions has the greatest concentration of hydroxyl ions [OH-]? Select one: a. lemon juice at pH 2 O b. vinegar at pH 3 O c. tomato juice at pH 4 O d. urine at pH 6 e. seawater at pH 8arrow_forwardA substance dissociates into K+ and Cl– in solution.The substance is a(n) ________.a. acidb. basec. saltd. bufferarrow_forwardWhen dissolved in water, a(n) ________ donates H+;a(n) ________ accepts H+.a. acid; base c. buffer; soluteb. base; acid d. base; bufferarrow_forward
- two of these statements are truths and one is a lie. Which of the following statements is a lie? a. The concept of pH is exclusive of how buffers work. b. Salts dissociate into ions (except H+ and OH-) when dissolved in water. c. ATP stores a large amount of potential energy.arrow_forwardIf the addition of an acid or a base to a solution does not change its pH (or changed minimally), then that solution is referred to as a a. acid b. base c. buffer d. neutral solutionarrow_forwardWhich of the following is FALSE when the concentration of the buffer solution was increased? a. The buffer will be effective in resisting pH changes. b. There will be more weak acid components that can neutralize the added base. c. The solution will have a higher buffer capacity. d. There will be more weak base components that can neutralize the added base.arrow_forward
- Which of the following solutions is the most acidic? A. soda drink, pH 2.5 B. tears, pH 7.5 C. rain, pH 5.2 D. urine, pH 5.9 Е. tea, pH 3.8arrow_forwardSubstances those are partially dissolved in water are commonly known as اخترأحد الخيارات a. hydrophilic / hydrophobic b. false statement c. hydrophilic d. hydrophobic e. all given choices are incorrectarrow_forwardWhich of the following statements is TRUE? A. Water and electrolytes move across the cell membranes only through protein channels B. Water and electrolytes cannot move across cell membranes C. Water freely moves across cell membranes D. Electrolytes freely move across cell membranesarrow_forward
- Which among the following is an example of a pharmaceutically important buffer system? a. All of the choices b. Sorensen's buffer c. Palitzsch's buffer d. Gifford's bufferarrow_forwardThe inside of a cell contains several buffers. These buffers help ensure that Select one: a. pH inside the cell changes rapidly to balance pH changes outside the cell b. pH inside the cell remains at equilibrium with the pH outside the cell c. pH inside the cell changes rapidly to help maintain the environment outside the cell d. pH inside the cell remains stable when extracellular pH changesarrow_forwardWhich of the following ionizes completely in solution and is considered to be a strong acid? Select one: O a. NAOH O b. HCL O c. NH3 O d. H2CO3 O e. CH3COOHarrow_forward
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