Biology 1001 - Lab Midterm Questions
and Answers | 2024/2025 | Rated A+
What is the purpose of using a microscope in a biology lab?
A microscope is used to observe and analyze specimens that are too small to be seen with
the naked eye.
How do you properly prepare a wet mount slide?
...
What is the purpose of using a microscope in a biology lab?
✔✔ A microscope is used to observe and analyze specimens that are too small to be seen with
the naked eye.
How do you properly prepare a wet mount slide?
✔✔ Place a small drop of the specimen on the slide, gently place a cover slip over it at an angle,
and then examine under the microscope.
What is the significance of staining in microscopy?
✔✔ Staining enhances contrast between different cellular components, making them more
visible under the microscope.
How can you differentiate between plant and animal cells under a microscope?
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, ✔✔ Plant cells have a cell wall and chloroplasts, while animal cells do not have a cell wall and
have a more irregular shape.
What are the key steps in the gram staining procedure?
✔✔ The steps include applying a primary stain (crystal violet), a mordant (iodine), a decolorizer
(alcohol or acetone), and a counterstain (safranin).
What is the role of the cell membrane in cellular transport?
✔✔ The cell membrane regulates the movement of substances in and out of the cell, allowing
selective permeability.
How do you measure the size of cells or organisms using a microscope?
✔✔ Measure the field of view at different magnifications and use it to estimate the size of the
cells or organisms based on their proportion within the field.
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