One reason why fungi cannot perform phagocytosis of food particles is that: A. t

Question

One reason why fungi cannot perform phagocytosis of food particles is that: A. they do not need to, because they are photosynthetic. B. they lack necessary cytoskeletal components such as actin. C. they do not encounter food particles in their environments. D. they are surrounded by a stiff cell wall. _________ genes encode products essential for transcription and transcription and ________ genes encode products that govern metabolism, stress response, and pathogenicity. A. Informational/operational B. Operational/informational C. Accessory/essential D. Horizontally-transmitted-vertically-transmitted Which of the following is NOT a feature that you would expect to be shared by two organisms of the same species A. SSU sequences are equal to or greater than 97% similar B. Average nucleotide identity of orthologous genes is equal to or greater than 95% similar C. When the DNA from the 2 organisms is denatured and reannealed the proportion of hybridization is 70% or greater D. All viruses that are able to infect one organism are also able to infect the other. The genetic divergence of populations of organisms into different clades is driven by ALL BUT ONE of the following: A. random mutations B. homeostasis C. natural selection. D. reductive evolution. Organisms within the genus Prochlorococcus are responsible for 20% of the global photosynthetic production of oxygen, making them a critical part of our biosphere. Only one species within the Prochlorococcus genus has proven to be culturable (P. marinus) and even P marinus requires the presence of a "helper bacterium" The role of this helper bacterium appears to be its ability to produce the enzyme catalase, which catalyzes the breakdown of hydrogen peroxide (H_2O_2) into H_2O + O_2. Which of the following features of Prochlorococcus play a significant role in the situation described above? A. its evolution B. its ecology C. its physiology D. its metabolism E. all of the above

Explanation / Answer

One reason why fungi cannot perform phagocytosis of food particles is that:

D. They are surrounded by a stiff cell wall

Phagocytosis means to protect the body by ingesting the harmful foreign particles. And in fungi due to the presence of stiff cell wall they cannot perform phagocytosis. Basically in fungi cell wall plays the important role of protection of the cell as it prevents loss of water, provide mechanical protection from pathogens, it prevents cell rupturing, and provide protection against infections and many other things.

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