1) When biologists wish to study the internal ultrastructure of cells, they can achieve the finest resolution by using A) a phas
e-contrast light microscope. B) a scanning electron microscope. C) a transmission electronic microscope. Dna confocal fluorescence microscope. E) a super-resolution fluorescence microscope.
The transmission electron microscope is a high quality instrument to study internal ultrastructure of cells. It uses high energy beam of electrons instead of light for the imaging of the objects. As the wavelength of electrons is less as compared to the light which gives very high resolution of the images. High resolution can be used to analyze ultrastructure of cells. Thus, the finest details of internal structure of cells can be studied.
Mineral crystals that form when magma cools slowly are larger than crystals that form when lava cools rapidly. Minerals form when rocks are heated enough that atoms of different elements can move around and join into different molecules.
Trophic cascades are powerful indirect interactions that can control entire ecosystems. Trophic cascades occur when predators limit the density and/or behavior of their prey and thereby enhance survival of the next lower trophic level.
