31 Explain the role of endosymbiosis in the appearance of the mitochondriaWhich is the probable origin of mitochondria in early eukaryotes?Asgard archaeaO autotrophic bacteriaautotrophic archaeaCyanobacteriaheterotrophic bacteria with aerobic metabolismheterotrophic archaea with aerobic metabolism

Mitochondria is a double membrain bound cell organelle that contain their own DNA (double stranded…

Explain the role of endosymbiosis in the appearance of the mitochondria Which is the probable origin of mitochondria in early eukaryotes? Asgard archaea autotrophic bacteria autotrophic archaea Cyanobacteria heterotrophic bacteria with aerobic metabolism heterotrophic archaea with aerobic metabolism

Explain the role of endosymbiosis in the appearance of the mitochondria Which is the probable origin of mitochondria in early eukaryotes? Asgard archaea autotrophic bacteria autotrophic archaea Cyanobacteria heterotrophic bacteria with aerobic metabolism heterotrophic archaea with aerobic metabolism

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter13: Early Life Forms And The Viruses

Section: Chapter Questions

Problem 4SQ

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Mitochondria most likely evolved from_______. a. a photosynthetic cyanobacterium b. cytoskeletal elements c. aerobic bacteria d. membrane proliferation
in 1967, Lynn Margulis developed the endosymbiotic theory. As seen in the diagram below, the endosymbiotic theory describes how over thousands of years, free-living prokaryotes formed living communities inside larger ancestral prokaryotic cells. Today, we identify those early free-living prokaryotes as the mitochondria, chioroplasts, and possibly other organelles. Endesymbietic Theery How did the development of Margulis' theory aid in our understanding of how complex organisms came into existence? A. It provided an explanation as to why prokaryotic cells do not have a nucdeus. B. It provides an explanation as to why bacteria and mitochondria are similar in size. C. It provides an explanation of how life today could have originated from a single cell. D. It provides an explanation of how prokaryotic and eukaryotic cells use oxygen to work.
nto what kingdom would each of the following be classified: unicellular prokaryotes that live indust unicellular eukaryotes that live in pond water_ multicellular eukaryotes that live all over the planet and consume/eat food unicellular prokaryotes that live in volcanic ash and other inhospitable environments multicellular eukaryotes that have cell walls and are heterotrophic multicellular eukaryotes that have cell walls and are autotrophic
Tell whether the statement is true or false. 1. The endosymbiont hypothesis state that prokaryotes evolved into eukaryotic cells 2. Eukaryotes contain organelles such as mitochondria and chloroplast 3. Organisms develop by a process known as spontaneous generation 4. Bacteria is an example of prokaryoric cwll 5. Prokaryote is a type of cell that has no nucleus and no cell membrane but has cytoplasm
are these found in eukaryotes, prokaryotes or both? 1. nucleus 2. cell membrane 3. inclusion bodies 4. cell wall 5. peptidoglycan 6. genome 7. endoplamis reticulum 8. chloroplasts
According to the endosymbiotic theory, which of the following is NOT true about the evolution of life on earth? Eukaryotes and prokaryotes appeared at about the same time and evolved independently from each other. O None of the other four answers (all are true statements) Eukaryotes evolved from symbiotic prokaryotes living inside other prokaryotes Mitochondria and chloroplasts are in some ways similar to prokaryotes The first life on earth was simple organisms, similar to today's prokaryotes
An endosymbiont is any organism that lives within the body or cells of another organism. Each would have performed mutually benefiting functions from their symbirie relationship. Why are the mitochondria considered an endosybiont in an eukaryotic cell ? They have two membranes have DNA sequences that indicate origin from the alpha- prroteobacteria has a means for using oxygen and create ATP can break down glucose for energy O They contain hydrolytic enzymes
Origin of life BACTERIA EUKARYA ARCHAEA Low-GC Gram-positives High-GC Gram-positives Hyperthermophilic bacteria Origin of- mitochondria Hadobacteria Cyanobacteria Spirochetes Chlamydias Proteobacteria -Origin of chloroplasts All eukaryote phyla Thaumarchaeota Crenarchaeota Korarchaeota Euryarchaeota Nanoarchaeota
Given the following approximation of our current best understanding of the tree of life, which domains are most closely related? Bacteroides Chlamydia Green sulfur bacteria Spirochetes Deinococcus Bacteria Chloroplast ancestor Cyanobacteria Gram-positive bacteria Bacteria and Archaea Thermotoga Archaea and Eukarya Mitochondrial ancestor a Bacteria and Eukarya Proteobacteria 8 Thermodiscus В Y E. coli E Crenarchaeota Korarchaeota Aquifex All three domains of life are equally closely related Archaea Euryarchaeota Methanospirillum Methanococcus Haloferax Thermococcus Giardia Eukarya Trichomonas Trypanosoma Physarum Encephalitozoon Animals Fungi Plants Paramecium Dictyostelium Entamoeba
Which of the following statement(s) or feature(s) apply to Amoeba proteus ? Select 3 correct answer(s) practie Can do photosynthesis Prokaryote Bacteria O Unicellular organism O Multicellular organism Eukaryote Possess a nucleus
After the glacial retreat at the end of the last ice age, some three-spine stickleback fish (Gasterosteus aculeatus) were isolated in small lakes. A mutation occurred in these fish that resulted in the loss of pelvic spines. Today, all freshwater sticklebacks lack pelvic spines, but are still classified as members of the same species as marine sticklebacks. Scientists collected sticklebacks from both marine and freshwater environments and placed them together in a controlled environment. Which of the following statements describes the effect of the mutation on their ability to interbreed? They should be able to interbreed and produce fertile offspring. They will not be able to interbreed and produce offspring because of hybrid breakdown. They will not be able to interbreed and produce offspring because of mechanical isolation. They should be able to interbreed and produce offspring, but the offspring may experience reduced hybrid fertility.
Does the following phylogenetic tree provide evidence to support or refute the endosymbiosis hypothesis? Briefly explain your choice (1-2 sentences) Bacteria a-Proteobacteria Mitochondria Archaea Eukarya Excavata Discicristata Alveolata Stramenopila Rhizaria Plantae Opisthokonta Amoebozoa