Which of the following occurred first in the history of life on earth? Colonization of land Evolution of photosynthesis Origin of unicellular eukaryotes Origin of multicellular eukaryotes Origin of prokaryotes
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- Which of the following occurred first in the history of life on earth?
- Colonization of land
- Evolution of photosynthesis
- Origin of unicellular eukaryotes
- Origin of multicellular eukaryotes
- Origin of prokaryotes
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- What are the eons in which the following events occur? Origin of Earth. Oxygen appeared in the atmosphere Prokaryotic cells Single cell eukaryotes Multicellular eukaryotes Animals PlantsAccording 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 prokaryotesWhich of the following is not true concerning the mitochondria and chloroplasts and is not evidence in support of the Endosymbiotic Theory? Both divide independently of the eukaryotic cell they are within Both contain their own DNA in a single, circular chromosome Both can survive independently when removed from a eukaryotic cell Both are about the same size as a bacteria
- Which of the following organisms appeared on earth first? Prokaryotes Eukaryotes Animals PlantsGiven 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 EntamoebaWhich of the following pieces of evidence could support the endosymbiotic theory if found to be true? Traces of peptidoglycan in the cytoplasm in eukaryotes Presence of rRNA in eukaryotes Presence of 80S ribosomes in eukaryotes The discovery of a unicellular eukaryote
- Based on genes from mitochordrial DNA the most accepted tree of life includes three domains. Eukaryotes and archaea are most closely related to each other than either are to bacteria. MRNA rRNA TRNA 0000After 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.Which of the following consist of prokaryotic cells? a. bacteria and fungi b. archaea and fungi c. protists and animals d. bacteria and archaea
- 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.Which of the following statement is not a line of evidence supporting the endosymbiotic theory for the evolution of eukaryotes? Question 8 options: Mitochondria and plastids have their own circular DNA which is similar to bacterial DNA. Mitochondria and plastids can both live and reproduce outside of a cell. Mitochondria and plastids are separated from the rest of the cell by a membrane. Mitochondria and plastids reproduce independently of the rest of the cell.Which of the following scientists claimed that all cells (from animals, fungi, plants, protists, and bacteria) share a single common ancestor, which first originated on Earth through abiogenesis? Matthias Schleiden Charles Darwin Louis Pasteur Robert Hooke Theodor Schwann