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Questions and Answers
What is a characteristic shape of a typical plant cell observed under a microscope?
What is a characteristic shape of a typical plant cell observed under a microscope?
- Square with sharp corners
- Triangular with pointed angles
- Polyhedral with rounded angles (correct)
- Cylindrical with smooth edges
What feature of the lumen is observed in typical plant cells?
What feature of the lumen is observed in typical plant cells?
- Absence of lumen
- Wide lumen (correct)
- Narrow lumen
- Irregular lumen
What is a significant feature of intercellular spaces in typical plant cells?
What is a significant feature of intercellular spaces in typical plant cells?
- Narrow intercellular spaces
- Intercellular spaces are filled with air
- Very large intercellular spaces
- Intercellular spaces are absent (correct)
What is the first step in preparing a microscope slide of red onion cells?
What is the first step in preparing a microscope slide of red onion cells?
What distinct shape do red onion cells exhibit under microscopic observation?
What distinct shape do red onion cells exhibit under microscopic observation?
What does the prefix 'micro' in the word 'microscope' refer to?
What does the prefix 'micro' in the word 'microscope' refer to?
Which part of the word 'microscope' refers to the action of seeing?
Which part of the word 'microscope' refers to the action of seeing?
What is the primary function of a microscope?
What is the primary function of a microscope?
Which of the following statements is true about microscopes?
Which of the following statements is true about microscopes?
From which languages do the components of the word 'microscope' originate?
From which languages do the components of the word 'microscope' originate?
What should be used to focus the microscope when using a high power objective lens?
What should be used to focus the microscope when using a high power objective lens?
Where is the illuminator typically located in a microscope?
Where is the illuminator typically located in a microscope?
What is the primary function of the illuminator in a microscope?
What is the primary function of the illuminator in a microscope?
Which part of a microscope should not be used for focusing with high power lenses?
Which part of a microscope should not be used for focusing with high power lenses?
Which statement is true regarding the use of a fine knob in microscopy?
Which statement is true regarding the use of a fine knob in microscopy?
What is the primary function of the objective lenses on a microscope?
What is the primary function of the objective lenses on a microscope?
Which type of microscope utilizes an eyepiece tube to position the eyepiece and objective lenses for in-focus images?
Which type of microscope utilizes an eyepiece tube to position the eyepiece and objective lenses for in-focus images?
Which microscope type is equipped with an additional eyepiece for cameras or imaging devices?
Which microscope type is equipped with an additional eyepiece for cameras or imaging devices?
What differentiates a binocular microscope from a monocular microscope?
What differentiates a binocular microscope from a monocular microscope?
Which statement about eyepiece tubes and objective lenses is true?
Which statement about eyepiece tubes and objective lenses is true?
What is the magnification power of the low power objective lens?
What is the magnification power of the low power objective lens?
Which statement accurately describes the low power objective lens?
Which statement accurately describes the low power objective lens?
When would you most likely use the low power objective lens?
When would you most likely use the low power objective lens?
How does the low power objective lens compare to the scanning objective lens in terms of magnification?
How does the low power objective lens compare to the scanning objective lens in terms of magnification?
Which of the following is NOT a characteristic of the low power objective lens?
Which of the following is NOT a characteristic of the low power objective lens?
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Study Notes
Microscope
- "Microscope" comes from the words "micro" and "scope"
- "micro" - means small or tiny
- "scope" - means to view or observe
- Microscopes are instruments to see tiny things
Onion Cell
- A typical plant cell
- Polyhedral cells with rounded angles
- Wide lumen
- Without intercellular spaces
Microscope Components
- Eyepiece tube places the eyepiece and objective lenses within a distance range to generate in-focus images
- Monocular - one eyepiece
- Binocular - two eyepieces
- Trinocular - three eyepieces
Objective Lenses
- Low Power Objective Lens (10x) - more magnification power than the scanning objective lens
- High Power Objective Lens - carefully focus by only using the fine knob
Illuminator
- The light source for a microscope, typically located in the base of the microscope.
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