Studying Cells by Microscopy (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
In which decade were electron microscopes first developed?
In which decade were electron microscopes first developed?
1931 (1930s)
Which organelle is too small to see with a light microscope?
Which organelle is too small to see with a light microscope?
Ribosome
What is the total magnification with ×10 eyepiece and ×40 objective lens?
What is the total magnification with ×10 eyepiece and ×40 objective lens?
×400
What does resolution refer to in microscopy?
What does resolution refer to in microscopy?
Ability to distinguish two adjacent points
What is the maximum resolution of a transmission electron microscope?
What is the maximum resolution of a transmission electron microscope?
0.2 nm
What type of image does a scanning electron microscope produce?
What type of image does a scanning electron microscope produce?
3D surface features
What does a laser scanning confocal microscope eliminate?
What does a laser scanning confocal microscope eliminate?
Blur from out-of-focus tissue
A structure measures 30 mm in a photo but is really 0.3 mm. What is the magnification?
A structure measures 30 mm in a photo but is really 0.3 mm. What is the magnification?
×100
Which instrument cuts very thin tissue sections for light microscopy?
Which instrument cuts very thin tissue sections for light microscopy?
Microtome
What type of compounds are used as stains for transmission electron microscopy?
What type of compounds are used as stains for transmission electron microscopy?
Heavy-metal compounds