B: Cells and Systems, section 2: microscopes and cells Flashcards
What does the eyepiece of a microscope do?
Contains the lens that magnifies.
What does the coarse adjustment knob do?
Moves the stage up or down to focus the object to produce a flat sharp image.
What does the fine adjustment knob do?
Brings the object into sharper focus
What does the revolving nosepiece do?
Holds the three objective lenses
What do the objective lenses do?
Provides different strength of magnification
What does the stage do?
Supports the slide that holds the object you want to view.
What do the stage clips do?
Hold the slide firmly on the stage
What does the diaphragm do?
Has different sizes holes that let different amounts of light pass through the object
What does the lamp do?
Supplies the light that passes through the object you’re viewing
What does the arm do?
Allows you to carry the microscope securely
What does the base do?
Serves as a foundation for the rest of the microscope
What factors affect your ability to see the internal parts of cells?
The type of microscope
The power of the lenses
The quality of the prepared slides
What are organelles?
Specialized structures that carry out specific functions
What is the function of the nucleus?
A command center that directs all the organelles
What is the function of the mitochondria?
Converts nutrients into energy
What is the function of the cells membrane?
Let’s materials in and waste out
What are the functions of the vacuoles?
Store nutrients and water
What is the function of the cytoplasm?
Contains nutrients required to carry out life proses