Prokaryote: Quiz

Question 1: The oldest known ________ prokaryotes were laid down approximately 3.5 billion years ago, only about 1 billion years after the formation of the Earth's crust.
FossilGeologic time scaleGeologyPaleontology

Question 2: ________ and Bacteria, the two prokaryotic taxa

Question 3: Bacteria and archaea reproduce through ________, usually by binary fission or budding.
FungusPlantMicroorganismAsexual reproduction

Question 4: Cells in biofilms often show distinct patterns of ________ (phenotypic differentiation) in time and space.
RNAProteinGene expressionDNA

Question 5: Instead processes such as ________ and photosynthesis take place across the prokaryotic plasma membrane.
MetabolismOxidative phosphorylationElectron transport chainAdenosine triphosphate

Question 6: [5] Prokaryotes generally lack membrane-bound cell compartments: such as mitochondria and ________.
PhotosynthesisPlastidChloroplastCell wall

Question 7: A distinction between prokaryotes and eukaryotes (meaning true kernel, also spelled "eucaryotes") is that eukaryotes do have "true" nuclei containing their ________, whereas the genetic material in prokaryotes is not membrane-bound.

Question 8: [6] However, prokaryotes do possess some internal structures, such as ________,[7][8] and the bacterial order Planctomycetes have a membrane around their nucleoid and contain other membrane-bound cellular structures.

Question 9: Most are ________, but a few prokaryotes such as myxobacteria have multicellular stages in their life cycles.

Question 10: The prokaryotes (singular pronounced /proʊˈkæriət/) are a group of organisms that lack a ________ (= karyon), or any other membrane-bound organelles.
Cell nucleusEndomembrane systemMitochondrionCell (biology)

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