Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of
algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light. What did Engelmann conclude about the congregation of bacteria in the red and blue areas?A) Bacteria released excess carbon dioxide in these areas.B) Bacteria congregated in these areas due to an increase in the temperature of the red and blue light.C) Bacteria congregated in these areas because these areas had the most oxygen being released.D) Bacteria are attracted to red and blue light and thus these wavelengths are more reactive than other wavelengths.E) Bacteria congregated in these areas due to an increase in the temperature caused by an increase in photosynthesis.
The aerotaxis movement experiment performed by the Theodor W. Engelmann played an important role in understanding the photosynthesis.
The experiment was performed on the <em>Spirogyra </em>filamentous algae which were exposed to a different wavelength of light.
The other aerobic bacteria present in the test tubes started moving and accumulated near the two regions of the <em>Spirogyra</em> where they were exposed to the blue and red light of the VIBGYOR.
The region receiving red and blue light produced more oxygen through photosynthesis which indicated that these two wavelengths of the light are more active for photosynthesis than any other wavelengths.
In human genetics, this is type of inheritance is called multiple alleles.There are more than 2 alleles in the population and there are 4 possible phenotypes for this type of inheritance. Each blood type refers to a specific antigen, most useful in blood transfusions.
Jellyfish, corals, and hydras belong to the group of animals called cnidarians. The main characteristic of this group is that all of its members possess specialized cells called cnidocytes which often produce venom and have a role in capturing the animals prey.
