Atlas of plant and animal histology

Choose true or false. Each right answer scores 1, and each wrong answer scores -1. Not answered questions score 0.

1) The first light compound microscopes were invented at the beginning of the 17th century.

2) The resolving power and the magnification of a microscope are the same thing.

3) The immersion oil is used for 40x objectives.

4) The condenser is the source of the light in the light microscopes.

5) The fine adjustment control is intended for a precise focus of the sample.

6) Dark field microscopy needs ultraviolet wavelengths.

7) Nomarski microscopy is used for visualizing fluorochromes.

8) Fluorescent microscopy allows us to visualize a type of molecule called fluorophores.

9) The filters of the fluorescent microscopy allow us to selectively excite different types of fluorophores.

10) Fluorescent microscopy can be used as a general stain to study the tissues.

11) A confocal microscope serves to study fluorescent tissues or fluorophores added during the technique.

12) The cellular ultrastructure can be visualized with the electron microscope.

13) Electron microscopes have optical lenses to concentrate the electron beam.

14) Cell membranes can be visualized with the transmission electron microscope.

15) The tissue to be observed with the electron microscope has to be stained with basic dyes.

16) Sections thicker than 10 µm can be studied with the transmission electron microscope.

17) Ultrathin sections are necessary to study the tissues with the scanning electron microscopy.

18) High-resolution images from sample surfaces can be visualized with scanning electron microscopy.