What role did the increase of atmospheric oxygen by prokaryotes play in the development of the endosymbiotic relationship between protoeukaryotes and mitochondria?

Q: In the late 1960s (and since), Lynn Margulis (and others) provided considerable evidence for the…

A: Endosymbiotic theory states that the eukaryotic cells are a result of endosymbiosis between a larger…

Q: What supergroup is Gracilaria in? Is this protist prokaryotic or eukaryotic?

A: Eukaryotes  Eukaryotes are either unicellular or multicellular organisms with advanced cellular sub…

Q: What is one argument against the idea that the nucleus has also become part of a eukaryotic cell via…

A: A prokaryotic cell consists of circular DNA that is free in the cytoplasm without being bound by a…

Q: What are the features of modern-day mitochondria that has been inherited from their prokaryotic…

A: Mitochondria is a double-membrane bound organelle and are best known as the powerhouse of eukaryotic…

Q: How might a sudden and dramatic change in your diet affect the diversity of prokaryotic species that…

A: A prokaryotic species are cellular organisms that do not have a nucleus enclosed in an envelope.…

Q: In what way was the evolution of eukaryotic cells linked to the increase in the oxygen concentration…

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: Which is the respiratory process of yeast?

A: Yeast is a unicellular fungus. It performs respiration. Respiration is a process to obtain energy…

Q: Why do some biologists describe the mitochondria of diplomonads and parabasalids as “highly…

A: Mitochondria are present in the eukaryotic cell, whereas, not present in single-cell organelles such…

Q: What is the role of chloroplast in green algae?

A: Algae are significant because they are the primary producers of biomass in the aquatic ecosystems.…

Q: What features unite some of the major lineages of eukaryotes?

A: New molecular evidence has allowed for the reclassification of protists into large “supergroups.”…

Q: The term protista refers to : a)  A kingdom within the superkingom SAR. b)  A kingdom within the…

A: The living organisms are divided into eukaryotes and prokaryotes according to their origin, shape,…

Q: how did metazoans evolve from a choanocyte like ancestor

A: ‘Metazoans’ is a term used to refer to all animals under the division of Metazoa. They are…

Q: Which of the following changes in early prokaryotes could be predicted to result in the emergence of…

A: Introduction : 1) The first single-celled organism appeared on earth about 3.5 billion years ago.…

Q: How does the body of a yeast differ from that of a mold?

A: Introduction Fungi are eukaryotic organism. They can reproduce sexually as well as asexually by…

Q: Which of the following prokaryotic kingdoms is characterized by the absence of a nucleus, the…

A: Different kindoms in the classification consists of different organisms. They all have different…

Q: The first appearance of free oxygen in the atmospherelikely triggered a massive wave of extinctions…

A: An ecosystem is a large community of living organisms in a specific area in which the biotic and…

Q: What are various modes of reproduction in protozoan protists?

A: Protozoan are protists are single-celled eukaryotes that are either free-living or parasites. They…

Q: What evidence supports the hypothesis that mitochondriapreceded plastids in the evolution of…

A: Plastids are double membrane-covered cytoplasmic organelles that possess their own genetic machinery…

Q: How does secondary endosymbiosis help explain the diversity ofphototrophic eukaryotes?

A: A cell is the fundamental unit of life. All living organisms are made up of one or many cells. The…

Q: Why might a parasitic protozoan lack mitochondria?

A: Answer- Parasites are those organisms that totally depends upon the host organism for food and…

Q: do eukaryotes have Pangenomes?

A: in metagenomics, pangenome is the complete cohort of the gene set of all strains of a given species…

Q: How does serial endosymbiosis explain the origin of chloroplasts?

A: Chloroplast is an organelle present in algal and plant cells. This organelle is responsible for…

Q: In the five kingdom system of Whittaker, how many kingdoms are eukaryotes?

A: Taxonomy refers to the discipline that includes organism’s classification into ranks by arranging…

Q: Did symbiosis play a role in the development of eukaryotes?

A: Prokaryotic organisms (bacteria and archaea) are unicellular (single-celled) organisms that lack…

Q: Which traits are shared by all eukaryotic cells, and what are the three major lines of evidence that…

A: Traits shared by all eukaryotic cells:  Presence of well defined nucleus that contains the genetic…

Q: How many endosymbiotic events are required to account for the diversity of photosynthetic…

A: Endosymbiont is an organism that lives within another organism and sometimes maintains a mutualistic…

Q: How old are the oldest fossils of Eukaryotic cells?

A: The prokaryotic cell originated on the Earth around 3.8 billion years ago. These prokaryotic…

Q: Describe the features of mitochondria and chloroplasts that support the endosymbiotic theory.

A: According to the endosymbiotic theory, the organelles like mitochondria and chloroplast in today's…

Q: How does a unicellular eukaryote acquire considerable structural complexity within the constraints…

A: A cell is the fundamental unit of life. All living organisms are made up of one or many cells. The…

Q: 50) Some protists, formerly united as the ʺamitochondriateʺ clade, have recently been shown to be…

A: The Kingdom Protista has been disassembled over several decades as a result of sequence studies…

Q: How did the appearance of Cyanobacteria change the atmosphere of the ancient earth ?

A: Cyanobacteria/Blue green algae are photosynthetic.   They convert sunlight into energy and…

Q: According to the endosymbiotic theory, protoeukaryotes did not have ribosomes until the…

A: The Endosymbiotic Theory expresses that the mitochondria and chloroplast in eukaryotic cells were…

Q: Discuss the Endosymbiotic Theory. Do you think it is a strong explanation on how the eukaryotes…

A: Endosymbiosis is the theory that eukaryotic cells were formed when a prokaryotic cell ingested some…

Q: How do eukaryotic cells differ from bacteria and archaeons, and how do these differences explain the…

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: Which protozoan group has Pseudopodia?

A: Protozoa are unicellular eukaryotes which show resemblance to animals in terms of their nutritional…

Q: Did eukaryotes develop from prokaryotes?

A: According to the cell theory, all life forms are made up of cells, that can be a single cell…

Q: After the female Verroa mite has deposited her eggs in the brood cell of the honey bee, which mite…

A: Symbiosis is a type of close relationship between two organisms. There are different types of…

Q: How are protozoans classified and explain the process of sexual reproduction by means of…

A: Protozoans are eukaryotic organisms that are unicellular and heterotrophic. Protozoans are…

Q: The mitotic cell division in amoeba represents growth or reproduction?

A: Amoeba is an unicellular organism which is capable of altering its shape and aids its locomotion by…

Q: ymbiosis has had a role in eukaryotic development?

A: Endosymbiosis is the process where small cells are engulfed by large cells and inside the large…

Q: How did endosymbiosis contribute to the evolution of eukaryotes?

A: Symbiosis is defined as a close relationship between two different organisms. The endosymbiosis…

Q: What does the endosymbionttheory propose as the originfor mitochondria andchloroplasts? Explain.

A: Mitochondria are the cell organelle. It is usually termed as power house of the cell because it…

Q: Did symbiosis play important role in development of eukaryotes?

A: The theory of endosymbiosis depends on the mitochondria and plastids of eukaryotic cells. The two…

Q: Single-celled Eukaryotes were preceded by what environmental development on Earth? O a. The forming…

A: Eukaryotes are the organisms having well defined nucleus with cellular organelles such as…

Q: Why are archaebacteria called living fossils?

A: Introduction: "Archae" stands for "ancient", archaebacteria are thought to evolve from the very…

Q: what function did molecular signals and receptors have in the protistan ancestors of complex…

A: Cells have evolved systems that allow them to detect and respond to environmental signals. Some of…

Q: Would the following ancestral cell have been a prokaryote or an early eukaryote? Briefly explain…

A: Biological evolution refers to the origin of first biological cell from non living chemical…

Q: Do protozoans have sexual or asexual reproduction?

A: Protozoa are single-celled microscopic, animal-like organisms that are a part of the Kingdom…

Prokaryotic evolution

The term evolution means the gradual change or a transformation from a simple or primitive state to a complex or advanced state. Prokaryotic evolution is a concept that involves the evolution of the form and function of most primitive organisms (prokaryotes) through several stages and changes to form diverse life as a part of organic evolution.