Question 3
A high magnification microscope has a smaller resolution power than a low magnification microscope. A short resolving power length is better than a larger resolving value. The shorter the distance the longer the resolving power, and the easier it is to distinguish small objects. True.
Other measures being equal, the smaller the wave the easier it is to distinguish small objects. False.
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Other measures being equal, the larger the numerical aperture, the higher the resolving value and the more the difficult to distinguish small objects. True.
Electrons have a very short-wave length, the resolving power of an electron microscope is a lower value than that of a compound light microscope. True.
Question 4
The small size of cells tends to be attributed to multiple factors significantly. The first reason viable cells tend to be small in size is due to the surface area to volume ratio. Viable cells tend to have a high surface area to volume ratio (Kohen, 2014). The high surface area to volume ratio tends to facilitate the exchange of substance between the outside and inside. Surface area to volume ratio usually plays an essential role in determining the gaseous and molecule materials that pass through the cells. The high surface area to volume ratio tends to play a significant role in determining the chemical reactions that occur in cells. However, if the viable cells had a small surface area to volume ratio, chemical reactions that occur in viable cells would be limited to a greater extent.
Diffusion usually plays an essential role in the activities that are facilitated by the cells. Diffusion is defined as the movement of molecules from one location to the other. The diffusion rates tend to be affected by the size of the material that diffusion is occurring inside the substance (Kohen, 2014). The small size of viable cells tends to facilitate the movement of molecules through diffusion significantly.
The other tangible reason for supporting the fact on the small nature of viable cells in the presence of a weak semi-permeable membrane. The cell membrane is defined as the outer lining of cells of organisms. The cell membrane tends to support the inner part of the cell from collapsing thus the sole reason for the small nature of cells. Furthermore, the cells tend to have a semipermeable membrane which tends to play a significant function in the transportation of materials or molecules from the internal part of the cells to the external parts of the cells.
The significant soles which are played viable cells tend to support the reason why viable cells are relatively small (Chen et al, 2017). Viable cells tend to facilitate the transportation of nutrients and other molecular substance in organisms. For this reason, if cells were relatively large, the transportation roe played by cells will significantly be limited. The nature of the small size of cells tends to play an essential role in increasing the effectiveness of the transportation roles played by cells.
The small size of viable cells is due to the sole reason of replacement. In most cases, viable cells tend to die in some instance. The viable dead cells usually need to be replaced to ensure that the bodies of the organism can perform their function (Chen et al, 2017). However, the small nature of viable cells tends to minimally affect the activities of the microorganisms when replacement of these cells occurs in organisms.
All in all, we get to understand the small size of these viable cells is primarily attributed to the fact of surface area to volume ratio, diffusion, transportation of nutrients and molecules and increase the effectiveness of activities.
Reference
Chen, H., Fuentes, R., Mullins, M. C., & Good, M. C. (2017, January). Contribution of Nucleus Size and Cell Size to Genome Activation. In Molecular Biology oftThe Cell (Vol. 28). 8120 Woodmont Ave, Ste 750, Bethesda, Md 20814-2755 Usa: Amer Soc Cell Biology.
Kohen, E. (Ed.). (2014). Cell structure and function by microspectrofluorometry . Academic Press.
