Grade 11 Biology Lab Techniques Worksheet
This worksheet covers fundamental biology lab techniques essential for Grade 11 students, including microscopy, sterile technique, and solution preparation.
Includes
Standards
Topics
Grade 11 Biology Lab Techniques
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all calculations where applicable. This worksheet will assess your understanding of common biology lab techniques.
1. Which of the following is the primary purpose of using sterile technique in microbiology labs?
To prevent contamination of cultures and samples.
To speed up experimental procedures.
To reduce the cost of lab supplies.
To enhance the visibility of microorganisms.
2. What is the total magnification of a microscope if the ocular lens is 10x and the objective lens is 40x?
50x
400x
40x
100x
3. The process of adding a solvent to a solute to create a solution is called .
4. When focusing a microscope, you should always start with the power objective lens.
5. Briefly explain the difference between a coarse adjustment knob and a fine adjustment knob on a microscope.
6. Label the indicated parts of the microscope below.
A:
B:
C:
D:
7. It is acceptable to pour unused chemicals back into their original containers to avoid waste.
True
False
8. When preparing a wet mount slide, always place the coverslip at a 45-degree angle to prevent air bubbles.
True
False
9. You need to prepare 250 mL of a 0.5 M NaCl (sodium chloride) solution. The molar mass of NaCl is 58.44 g/mol. Describe the steps you would take to accurately prepare this solution in the lab.