Exam 3: BIOS 256 / BIOS256 (Latest Update 2025 / 2026) Anatomy and Physiology IV with Lab | Questions with Answers | Grade A | 100% Correct - Chamberlain

Exam 3: BIOS 256 / BIOS256 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions
with Answers | Grade A | 100%
Correct - 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+

,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

,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

, 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