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Which of the following are not eukaryotic?
a. bacteria
b. archaea
c. protozoa
d. both a and b
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- Bacteria that cause the disease typhus are close relatives of bacteria that evolved into _____. a. Protists b. Protocells c. chloroplasts d. mitochondria Among prokaryotes, only the cyanobacteria ______. a. Live near hydrothermal vents b. Produce oxygen during photosynthesis c. Cannot tolerate oxygen d. Have a nucleus-like structureBacteria are similar to archaea in that theya. arose through endosymbiosis.b. are multicellular.c. live in extreme environments.d. are prokaryotes.Mitochondria most likely evolved from_______. a. a photosynthetic cyanobacterium b. cytoskeletal elements c. aerobic bacteria d. membrane proliferation
- The first forms of life on Earth were thought to be_____. a. single-celled plants b. prokaryotes c. insects d. large animals such as dinosaurs_______ are oxygen-releasing photoautotrophs. a. Spirochetes c. Cyanobacteria b. Methanogens d. BacteriophagesProtists with the capabilities to absorb nutrients from dead organisms are called ______. a. photoautotrophs b. autotrophs c. saprobes d. heterotrophs
- Which of the following statements is not true?(A) Archaea and bacteria have different membrane lipids.(B) The cell walls of archaea lack peptidoglycan.(C) Only bacteria have histones associated with DNA.(D) Only some archaea use CO2 to oxidize H2, releasing methaneA) single-cell organisms, Cyanobacteria B) mammal formed, fish, reptiles C) Cyanobacteria, single cell organisms D) multi-cellular, fish, amphibiansMitochondria likely originated froma. archaea.b. invaginations of the cell membrane.c. bacteria.d. chloroplasts
