BACE Exam Questions 2025/2026 Exam
All Answers and Illustrations Given
4.651 x 10^4 written in expanded form is - 🧠 ANSWER ✔✔46,510
What is 5.78 x 3.13, rounded to the correct number of significant digits? - 🧠
ANSWER ✔✔18.1
What is 4.202 x 0.806, rounded to the correct number of significant digits? -
🧠 ANSWER ✔✔3.39
How many grams is 2.6 kg? - 🧠 ANSWER ✔✔2600
How many milliliters is 0.725L?
Group of answer choices - 🧠 ANSWER ✔✔725
Your supervisor provides you with a 1.0 mg/mL solution of Bovine Serum
Albumin (BSA), and asks you to make a 5-step 2-fold serial dilution. What
would be the dilution factor at step 3? - 🧠 ANSWER ✔✔1:8
You are given a 5.0 mg/mL protein standard solution, and asked to prepare
a 5-step, 2-fold serial dilution to create a standard curve. What is the final
1
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,concentration of protein standard in mg/mL? Record the correct amount to
three decimal places. - 🧠 ANSWER ✔✔0.156
You are given a 5.0 mg/mL protein standard solution, and asked to prepare
a 5-step, 2-fold serial dilution to create a standard curve. After the third step
of the dilution, what is the concentration of the protein standard, in mg/mL?
Record the correct amount to two decimal places. - 🧠 ANSWER ✔✔0.63
Your supervisor provides you with a 1.0 mg/mL solution of Bovine Gamma
Globulin (BGG). What is the dilution factor if you add 150 µL of 1.0 mg/mL
BGG to 150 µL of diluent? - 🧠 ANSWER ✔✔1:2
A technician is asked to prepare a dilution of a common laboratory
disinfectant. The label indicates that a 1:29 dilution in water is required prior
to use. Using the simple dilution method, calculate the volume in mL of
disinfectant required to make 1.0 L. Record the answer to one decimal
place below - 🧠 ANSWER ✔✔34.5
An SOP for preparing a bleach solution instructs to dilute the bleach 1:15 in
water. Using the simple dilution method, calculate the volume in mL of
bleach required to make 3.5 L. Record the correct amount to one decimal
place. - 🧠 ANSWER ✔✔233.3 mL
2
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STATEMENT. ALL RIGHTS RESERVED
, You are given a stock protein solution with a concentration of 24 mg/mL.
Determine the protein concentration of a solution made by mixing 5 μl of
the stock with 45 μl of a buffer. Record the amount to one decimal place. -
🧠 ANSWER ✔✔2.4
Calculate the volume in mL of 50X TE Buffer required to make 1.5 L of 1X
TE Buffer. - 🧠 ANSWER ✔✔30 mL
Calculate the volume in mL of 25X TAE Buffer required to make 5.0 L of 1X
TAE Buffer. Record the correct amount. - 🧠 ANSWER ✔✔200 mL
Calculate the volume in mL of a 10.5 mg/mL tetracycline stock solution
required to make 525 mL LB with a final concentration of tetracycline at
2.75 mg/mL. Record the answer to one decimal place. - 🧠 ANSWER
✔✔137.5
Which of the following is the correct method to make 1 L of 10% sodium
chloride? - 🧠 ANSWER ✔✔Dissolve the appropriate amount of sodium
chloride in a small volume of dH2O, then adjust the volume to 1 L
Calculate the mass in g of agarose required to make 200 mL of a 1.2%
agarose gel. Record the answer to one decimal place. - 🧠 ANSWER ✔✔2.4
3
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
All Answers and Illustrations Given
4.651 x 10^4 written in expanded form is - 🧠 ANSWER ✔✔46,510
What is 5.78 x 3.13, rounded to the correct number of significant digits? - 🧠
ANSWER ✔✔18.1
What is 4.202 x 0.806, rounded to the correct number of significant digits? -
🧠 ANSWER ✔✔3.39
How many grams is 2.6 kg? - 🧠 ANSWER ✔✔2600
How many milliliters is 0.725L?
Group of answer choices - 🧠 ANSWER ✔✔725
Your supervisor provides you with a 1.0 mg/mL solution of Bovine Serum
Albumin (BSA), and asks you to make a 5-step 2-fold serial dilution. What
would be the dilution factor at step 3? - 🧠 ANSWER ✔✔1:8
You are given a 5.0 mg/mL protein standard solution, and asked to prepare
a 5-step, 2-fold serial dilution to create a standard curve. What is the final
1
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
,concentration of protein standard in mg/mL? Record the correct amount to
three decimal places. - 🧠 ANSWER ✔✔0.156
You are given a 5.0 mg/mL protein standard solution, and asked to prepare
a 5-step, 2-fold serial dilution to create a standard curve. After the third step
of the dilution, what is the concentration of the protein standard, in mg/mL?
Record the correct amount to two decimal places. - 🧠 ANSWER ✔✔0.63
Your supervisor provides you with a 1.0 mg/mL solution of Bovine Gamma
Globulin (BGG). What is the dilution factor if you add 150 µL of 1.0 mg/mL
BGG to 150 µL of diluent? - 🧠 ANSWER ✔✔1:2
A technician is asked to prepare a dilution of a common laboratory
disinfectant. The label indicates that a 1:29 dilution in water is required prior
to use. Using the simple dilution method, calculate the volume in mL of
disinfectant required to make 1.0 L. Record the answer to one decimal
place below - 🧠 ANSWER ✔✔34.5
An SOP for preparing a bleach solution instructs to dilute the bleach 1:15 in
water. Using the simple dilution method, calculate the volume in mL of
bleach required to make 3.5 L. Record the correct amount to one decimal
place. - 🧠 ANSWER ✔✔233.3 mL
2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, You are given a stock protein solution with a concentration of 24 mg/mL.
Determine the protein concentration of a solution made by mixing 5 μl of
the stock with 45 μl of a buffer. Record the amount to one decimal place. -
🧠 ANSWER ✔✔2.4
Calculate the volume in mL of 50X TE Buffer required to make 1.5 L of 1X
TE Buffer. - 🧠 ANSWER ✔✔30 mL
Calculate the volume in mL of 25X TAE Buffer required to make 5.0 L of 1X
TAE Buffer. Record the correct amount. - 🧠 ANSWER ✔✔200 mL
Calculate the volume in mL of a 10.5 mg/mL tetracycline stock solution
required to make 525 mL LB with a final concentration of tetracycline at
2.75 mg/mL. Record the answer to one decimal place. - 🧠 ANSWER
✔✔137.5
Which of the following is the correct method to make 1 L of 10% sodium
chloride? - 🧠 ANSWER ✔✔Dissolve the appropriate amount of sodium
chloride in a small volume of dH2O, then adjust the volume to 1 L
Calculate the mass in g of agarose required to make 200 mL of a 1.2%
agarose gel. Record the answer to one decimal place. - 🧠 ANSWER ✔✔2.4
3
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
