EduNinjaThe images of the radiolarian, a single-celled marine organism, were produced using a light microscope (left) and a scanning electron microscope (right).
What is a reason for the difference in quality of these images?
Light cannot pass through the specimen.
Higher magnification can be achieved with the electron microscope.
The resolution of the electron microscope is higher.
Samples are stained with methylene blue when viewed with the light microscope.
The image below shows freely-growing aerial rhizoids of the bryophyte Homalothecium sericeum near a shoot apex.
Removed for copyright reasons
Calculate the magnification of this image.
Outline the procedure for focusing a light microscope.
State one advantage of using a light microscope compared to an electron microscope.
The figure shows a transmission electron micrograph of rotavirus particles. Each rotavirus is about 70 nanometres in diameter.
State a reason for using an electron microscope to view this virus rather than a light microscope.
Rotavirus causes diarrhea and vomiting. Explain why viral diseases cannot be treated using antibiotics.
State an application of plasmids in biotechnology.
What is a feature of immunofluorescence in light microscopy?
Can only be used on dead cells
Enables higher resolution
Attaches a fluorescent stain to an antibody
Attaches a fluorescent stain to an antigen