Asked by Pedro Mendes da Fonseca on Apr 26, 2024
Verified
All of the following practices should be followed when making a wet mount, except
A) the specimen should be covered with a drop of water.
B) the wet specimen should be covered with a coverslip.
C) the specimen can be opaque and up to 1mm in thickness.
D) the microscope should not be tilted.
E) if using the oil immersion lens, open the iris diaphragm to illuminate the specimen.
Wet Mount
A technique for preparing specimens on a microscope slide using a drop of liquid to keep the sample alive or to enhance optical properties.
Iris Diaphragm
A component of optical devices, such as microscopes and cameras, that can adjust the size of the aperture to control the amount of light that passes through the lens.
Oil Immersion
A technique used in microscopy where an oil with a refractive index close to that of glass is placed between the specimen and the objective lens to increase resolution.
- Understand how to properly prepare and examine specimens using a microscope.
Verified Answer
FB
Francy BlancApr 29, 2024
Final Answer :
C
Explanation :
The statement "the specimen can be opaque and up to 1mm in thickness" is incorrect. Wet mounts work best for translucent or transparent specimens that are very thin, such as a section of onion skin or a drop of pond water. If the specimen is too thick or opaque, light cannot pass through it and the image will be blurry or obscured.
Learning Objectives
- Understand how to properly prepare and examine specimens using a microscope.