BIO 1050 ACTUAL TEST PAPER 2026
COMPLETE QUESTIONS AND CORRECT
ANSWERS VERIFIED A+
●● Determine the pOH of a solution.
Answer: pH + pOH = 14
●● Determine buffering capacity of a solution.
Answer: B= [(volume of acid or base added) x (molarity of acid or
base)] / [(volume of sample) x (pH change produced)]
●● Interpret buffering capacity data.
Answer: The higher the number, the better the buffering capacity
●● Distinguish among acidic, basic, and neutral solutions in terms of
pH.
Answer: Acidic: pH < 7
Basic: pH > 7
Neutral: pH = 7
●● Prepare a percent by volume solution.
Answer: C1V1 = C2V2
, C1V1 is the stock
C2V2 is the Dilution
●● Measure volume using a serological pipette and a micropipette.
Answer: Read pipette from side, dial #
●● Determine solute concentration in a sample using a
spectrophotometer and a standard curve or regression equation.
Answer: Y - absorbance
y = ax + b
●● Relate temperature, molecule size, and concentration gradient to
diffusion rate of molecules:.
Answer: -Higher temperature = higher diffusion rate
-higher concentration gradient = higher diffusion rate
-lower molecule size = higher diffusion rate
●● Determine surface area-to-volume ratio of a cylinder.
Answer: Surface area = (2πr x h) + (2 x πr^2)
COMPLETE QUESTIONS AND CORRECT
ANSWERS VERIFIED A+
●● Determine the pOH of a solution.
Answer: pH + pOH = 14
●● Determine buffering capacity of a solution.
Answer: B= [(volume of acid or base added) x (molarity of acid or
base)] / [(volume of sample) x (pH change produced)]
●● Interpret buffering capacity data.
Answer: The higher the number, the better the buffering capacity
●● Distinguish among acidic, basic, and neutral solutions in terms of
pH.
Answer: Acidic: pH < 7
Basic: pH > 7
Neutral: pH = 7
●● Prepare a percent by volume solution.
Answer: C1V1 = C2V2
, C1V1 is the stock
C2V2 is the Dilution
●● Measure volume using a serological pipette and a micropipette.
Answer: Read pipette from side, dial #
●● Determine solute concentration in a sample using a
spectrophotometer and a standard curve or regression equation.
Answer: Y - absorbance
y = ax + b
●● Relate temperature, molecule size, and concentration gradient to
diffusion rate of molecules:.
Answer: -Higher temperature = higher diffusion rate
-higher concentration gradient = higher diffusion rate
-lower molecule size = higher diffusion rate
●● Determine surface area-to-volume ratio of a cylinder.
Answer: Surface area = (2πr x h) + (2 x πr^2)
