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- 1. Which Domain(s)compose of prokaryotic organism? Why do you say so?2. What features are similar between Bacteria and Archaea?3. What features are similar between Bacteria and Eukarya?4. What features are similar between Archaea and Eukarya?5. Based on your analysis, which Domains are more closely related to each other? Explain.1) The Miller-Urey experiment in 1953 proved that Group of answer choices multicellular organisms can evolve from unicellular ones living cells could arise from non-living substances organic molecules important to living things could form from a "hot soup" of simple substances conditions on early Earth were not as inhospitable as biologists of the time generally believed a source of energy was not required in order for life to develop on Earth B) Which of the following statements about protists is false? Group of answer choices Some protists are mixotrophic Certain protists share a common ancestor with land plants Some protists are photosynthetic prokaryotes which are similar to the ancestral chloroplast Protists are a polyphyletic group of organisms that often bear little resemblance to each other Although most protists are unicellular, some protists are multicellular as well1. Which of the following is not an evidence that chloroplasts and mitochondria originated as prokaryotic endosymbionts of larger cells? * A. They contain circular DNA molecules not associated with proteins. B. Their membranes have enzymes and transport systems that resemble those found in plasma membranes of prokaryotes. C. Their ribosomal RNA is more similar to that of eubacteria than to eukaryotes. D. They contain their own genome and produce their own proteins. 2. Why does the endosymbiotic hypothesis maintain that chloroplasts may have at least three origins? It is because * A. Molecular systematics link the red line, green line and brown line to three different eubacteria. B. The chloroplasts of green plants show three distinct morphologies. C. The pigment composition and thylakoid arrangement cyanobacteria occur in three different arrangements. D. The phyla of algal protists can be divided into three…
- Which of the following organisms is a prokaryote? a. amoeba b. influenza A virus c. charophyte algae d. E. coliWhich of the following observations about a bacterium would distinguish it from the last eukaryotic common ancestor? A double-stranded DNA genome Lack of a membrane-bound structure surrounding the genome Fatty acids in the lipid bilayer of the plasma membrane Enclosed by a cell wallBacteria that cause the disease typhus arc close relatives of bacteria that evolved into __________. a. protists b. protocells c. chioroplasts d. mitochondria
- 1. What features are similar between Archaea and Eukarya? 2. Based on your analysis, which Domains are more closely related to each other? Explain.Choose one prokaryote (bacteria or archaea) AND one protest. You can choose a species or more general taxonomic group of interest. Then address the following questions for each. 1. What does the organism look like? Describe or include an image. 2. How does it obtain energy? 3. How does it reproduce? 4. What are its close relatives in the tree of life? 5. Why is it important from a human perspective?1. How is the idea of a prokaryote connected to prokaryotes? 2. Describe prokaryotic cells and their ecological history/importance.
- Scientists have discovered a new, unknown single-celled organism. They decide to compare the DNA sequence of the ubiquitin gene of the unknown organism with classified organisms. The ubiquitin gene is a gene found in some variation in all cells. Which organism shares the MOST recent common ancestor with the unknown organism? Question options: Yeast Green Algae Halophile Streptococcus1. Which statement about Archaea is INCORRECT? a. Prokaryota is the earliest classification of Archaea. b. Archaebacteria and Archaea both exclusively refer to extremophiles. c. Monera includes Archaea and Bacteria based on morphological features. d. Archaea diverged from Eukarya implying its close evolutionary relationship. 2. Which does not justify the chemical stability of Archaeal plasma membrane? a. The ether bond across Archaea makes the phospholipid stable. b. The paracrystalline surface of Archaes contributes to the stability of the cell. c. The fused isoprenoid chains provide rigidity and resistance for the cell. d. Variability of the lipid tail provides a variety of advantages to survival of the cell. 3. Which of the following are the probable reasons for the resistance of some Archaea to extreme conditions? I. isoprene II. lipid monolayer III. paracrystalline surface protein IV. ringed chains V. protein sheath VI. glycerophosphate a. I, II, IV, V b. I through VI c. I, II,…1. Why does the endosymbiotic hypothesis need to maintain that chloroplasts may have had at least three different origins? It is because a. the phyla of algal protists can be divided into three groups based on photosynthetic pigments and chloroplast structure b. molecular systematics link the red line, green line, and brown line to three different eubacteria c. the pigment compositions and thylakoid arrangement of cyanobacteria occur in three different arrangements d. the chloroplasts of green plants show three distinct morphologies 2. What do the banded formations in marine sediments indicate? a. Early cyanobacteria probably were producing oxygen when the sediment was deposited. b. The pH value of the early seas was quite low due to the excretion of organic acids from the fermentation by prokaryotes. c. Purple sulfur bacteria were the dominant life form in the seas during that time. d. The early atmosphere was very reducing. 3. How did the first gene develop?…