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BIOC 3021 Practice Exam 1 Questions and Answers
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---5November 20242024/2025A+
- BIOC 3021 Practice Exam 1 Questions and Answers 
 
 
A buffer solution is made from a weak acid, HA (pKa 6.0) and its conjugate base A-. What is the ratio of the base A- to the acid HA at pH 5.0? - AnswerspH = pKa + log[A-]/[HA] 
 
5 = 6 + log[A-]/[HA] 
 
-1 = log [A-]/[HA] 
 
10^-1 = ratio 
 
raio = 0.1 
 
Which of these elements is the least common in organic compounds within living cells? 
 
a) C 
b) F 
c) S 
d) N - AnswersB- fluoride 
 
If the hydrogen ion 
concentration of the blood increas...
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