Which of these would be evidence against endosymbiosis? a) chloroplast have their own DNA O b) their structure resembles that of prokaryotes O c) the presence of one membrane d) chloroplast resemble cyanobacteria

Under the endosymbiotic theory for the origin of the eukaryotic cell. The ancestor of mitochondria and chloroplasts original became part of mutualism with a larger host cell. Which of the following best explains this mutualism?     A) The mitochondria and chloroplasts provided specialized reproduction as part of the proto-germ line while the larger host cell provided energy for growth and reproduction.     B) The mitochondria and chloroplasts provided gene products that could be used by the larger host cell for improved parasitization.     C) The mitochondria and chloroplasts provided molecular energy in return for protection by the larger host cell.     D) The mitochondria and chloroplasts produce toxins that the larger cell utilized to defend itself from other cells mutually increasing the defense of all those involved.

Which of the following statement(s) is/are TRUE? a. yeasts are unicellular fungi b. molds and mushrooms are filamentous fungi. The filaments are chains of cells called "hyphae" C. most protozoa are unicellular, animal-like members of Domain Archaea, many of which are motile and lack cell walls d. algae have historically been described as "plant-like" protists because they contain chloroplasts and cell walls e. organisms which make chlorophyll a can perform oxygenic photosynthesis f. all organisms which make chlorophyll a have chloroplasts g. Nostoc, algae and plants all make chlorophyll a and all have chloroplasts h. Nostoc, algae and plants have mitochondria which evolved from primitive endosymbiotic bacteria i. Photoautotrophs perform photosynthesis and chemoheterotrophs require pre-formed organic molecules as a source of carbon and energy j. Cyanobacteria, algae and plants are photoautotrophs. Fungi, protozoa and animals are chemoheterotrophs k. Most bacteria, all fungi, all algae…

The endomembrane system is responsible for O a) Synthsize molecule O b) transport cell products c) secrete material found d) digestion of matter e) All of the above

An autotrophic protist, such as a diatom or a dinoflagellate, can evolve into a heterotrophic protist (and therefore a protozoan) simply by losing its chloroplasts. Under what conditions might this take place?

Describe the Theory of Endosymbiosis. a) Briefly define the Endosymbiotic Theory. 2 pts,b) Explain why the Theory of Endosymbiosis is considered a “theory” and not a “hypothesis.” 3 pts,c) Provide a description of eukaryotic and prokaryotic cells, including at least 4 similarities and 4 structural differences. 4 pts,d) Describe the sequence of events with anaerobic ancestral proto-eukaryotes and aerobic prokaryotes that led to the formation of mitochondria and chloroplasts inside eukaryotic cells. (Be sure to define aerobic and anaerobic respiration.) 6 pts,e) Explain how each, the anaerobic ancestral proto-eukaryotes and aerobic prokaryotes, benefited from the relationship. 4 pts,f) Describe 7 pieces of evidence for this scientific theory. Some of this evidence will consist of a list of similarities between mitochondria characteristics and bacteria characteristics. Along with this list of similarities, explain HOW the characteristics are similar. 10 pts,g) The Endosymbiotic Theory…

Which of the following are lines of evidence for endosymbiosis? Inner membranes are similar to plasma membranes of prokaryotes O DNA structure in chloroplasts and mitochondria are similar to that of prokaryotes Mitochondrial ribosomes are more similar to prokaryotic than eukaryotic ribosomes O The DNA found in the nucleus of a eukaryotic cell is very similar to that of prokaryotes.

Which of the following characters evolved last (i.e., most recently)? A) Heredity B) Photosynthesis C) Multicellularity D) Eukaryotic cells E) Prokaryotic cells

14) The evolution of eukaryotic cells most likely involved A) endosymbiosis of an aerobic bacterium in a larger host cell-the endosymbiont evolved into mitochondria. B) anaerobic archaea taking up residence inside a larger bacterial host cell to escape toxic oxygen-the anaerobic bacterium evolved into chloroplasts. C) an endosymbiotic fungal cell evolved into the nucleus. D) acquisition of an endomembrane system, and subsequent evolution of mitochondria from a portion of the Golgi.

What is true about archaea? |- their cell walls mostly lack peptidogylcan Il - they are more closely related to humans than bacteria III - they do not cause disease IV - some are halophiles O a) I, II, III and IV O b) I and III Oc) IV O d) I, Il and IV Ai étv MacBook Pro 向