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Exam 3: BIOS 256 / BIOS256 (
Update 2025 / 2026) Anatomy and Physiology IV with Lab Questions with Answers - Chamberlain
Question:
----- of a solution is determined solely by its --------
Answer:
pH / Hydrogen ions (H+)
Question:
acids; any chemical that ------- in solution
Answer:
donates H+
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Question:
Acids
Answer:
-any chemical that donates H+ in solution -a strong acid such as HYDROCHLORIC acid (HCI) ionizes freely -gives up most its H+ markedly LOWER pH of a solution -weak acids like CARBONIC ACID (H2CO3) ionize only slightly -keeps most H+ chemically bound, does not affect pH much
Question:
bases; any chemical that ----- in a solution
Answer:
accepts H+
Question:
bases
Answer:
-any chemical that accept H+ in a solution -strong bases, such as the hydroxide ion (OH-), have a strong tendency to bind H+, markedly raising pH
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Question:
Buffer
Answer:
any mechanism that resists changes in pH by converting strong acids or bases to weak one. 7.35-7.45
Question:
physiological buffers
Answer:
organ system that controls output of acids, bases, pr CO2
Question:
physiological buffer systems has URINARY AND RESPIRATORY system explain ?
Answer:
Urinary system: buffers greatest quantity of acid pr base
Respiratory system: buffers within minutes * cannot alter pH as much as the
urinary system
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Question:
major chemical buffers ****
Answer:
bicarbonate, phosphate, hemoglobin, and protein systems
Question:
chemical buffer restores ----- pH in fraction of a second
Answer:
normal
Question:
bicarbonate buffer system; converting strong acids and strong bases into
Answer:
weak acids
weak bases
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