BIO 152 LAB 4 EXAM 2026 LABORATORY
ASSESSMENT PREP QUESTIONS AND
SOLUTIONS GUARANTEED PASS
◉ The total magnification achieved using a 10× objective lens with a
10× eyepiece lens is 20×. Answer: False
◉ When the scanning (4x) objective is used the total magnification
will be ____. Answer: 40x
◉ When the low power (10x) objective is used the total
magnification will be _____. Answer: 100x
◉ When the high power (40x) objective is used the total
magnification will be ____. Answer: 400x
◉ When the oil immersion (100x) objective is used the total
magnification will be _____. Answer: 1000x
◉ Holds a microscope slide in position. Answer: Stage (slide) clip
◉ Contains a lens at the top of the body tube. Answer: eyepiece
(ocular)
,◉ Serves as a handle for carrying the microscope. Answer: Arm
◉ Part to which the objective lenses are attached. Answer:
Nosepiece
◉ Circular area seen through the eyepiece. Answer: Field of View
◉ The __________ causes the stage to move upward or downward..
Answer: Coarse adjustment knob
◉ Arrange the following steps of applying immersion oil in the
correct sequence.. Answer: 1. Focus on the specimen using the 40x
objective lens
2. Turn the objectives to half way between the 40x lens and the 100x
lens.
3. Apply a drop of immersion oil directly onto area of the slide you
were viewing.
4. Rotate the 100x lens over the microscope slide, and use the fine
focus adjustment knob to sharpen the image.
◉ Indicate the correct order of steps as you bring an object into
focus under high power.. Answer: 1. Place slide on stage and secure
with stage clips.
, 2. Turn on the light and center the specimen over the light source.
3. Focus specimen on scanning objective using coarse focus
adjustment
4. Rotate to low power objective, then use fine focus to sharpen the
image
5. Rotate high power lens into position.
6. Readjust fine focus under high power to produce the sharpest
image.
◉ Which of the following items will you need to make a wet mount?.
Answer: - transfer pipette
- clean slide
- tweezers
- cover slip
◉ Pond water can contain many types of organisms. Which of the
following are you most likely to find in a pond water sample?.
Answer: - bacteria
- algae
- rotifers
- protozoa
◉ Select all of the following that can be studied with brightfield
microscopy.. Answer: - fungi
ASSESSMENT PREP QUESTIONS AND
SOLUTIONS GUARANTEED PASS
◉ The total magnification achieved using a 10× objective lens with a
10× eyepiece lens is 20×. Answer: False
◉ When the scanning (4x) objective is used the total magnification
will be ____. Answer: 40x
◉ When the low power (10x) objective is used the total
magnification will be _____. Answer: 100x
◉ When the high power (40x) objective is used the total
magnification will be ____. Answer: 400x
◉ When the oil immersion (100x) objective is used the total
magnification will be _____. Answer: 1000x
◉ Holds a microscope slide in position. Answer: Stage (slide) clip
◉ Contains a lens at the top of the body tube. Answer: eyepiece
(ocular)
,◉ Serves as a handle for carrying the microscope. Answer: Arm
◉ Part to which the objective lenses are attached. Answer:
Nosepiece
◉ Circular area seen through the eyepiece. Answer: Field of View
◉ The __________ causes the stage to move upward or downward..
Answer: Coarse adjustment knob
◉ Arrange the following steps of applying immersion oil in the
correct sequence.. Answer: 1. Focus on the specimen using the 40x
objective lens
2. Turn the objectives to half way between the 40x lens and the 100x
lens.
3. Apply a drop of immersion oil directly onto area of the slide you
were viewing.
4. Rotate the 100x lens over the microscope slide, and use the fine
focus adjustment knob to sharpen the image.
◉ Indicate the correct order of steps as you bring an object into
focus under high power.. Answer: 1. Place slide on stage and secure
with stage clips.
, 2. Turn on the light and center the specimen over the light source.
3. Focus specimen on scanning objective using coarse focus
adjustment
4. Rotate to low power objective, then use fine focus to sharpen the
image
5. Rotate high power lens into position.
6. Readjust fine focus under high power to produce the sharpest
image.
◉ Which of the following items will you need to make a wet mount?.
Answer: - transfer pipette
- clean slide
- tweezers
- cover slip
◉ Pond water can contain many types of organisms. Which of the
following are you most likely to find in a pond water sample?.
Answer: - bacteria
- algae
- rotifers
- protozoa
◉ Select all of the following that can be studied with brightfield
microscopy.. Answer: - fungi
