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WGU D311 MICRO SECTION 1
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EXAMINATION PRACTICE
QUESTIONS AND CORRECT
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DETAILED ANSWERS LATEST
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UPDATE
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, What are characteristics of Prokaryotic Cells "Bacteria" - ANS Single celled, do not
have nucleus, mitochondria or chloroplast, multiple shapes (coccus, bacillus, vibrio, etc)
found in pairs, clusters or chains
What are characteristics of Eukaryotic cells "animal and plant cells" - ANS Have a
nucleus, have membrane bound organelles, single celled or multicellular, larger than
prokaryotes, linear histone wrapped chromosomes
Differences between Prokaryotes and Eukaryotes - ANS All plants and animal cells
(protozoans , algae, fungi) are Eukaryotic.
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bacteria and archaea are Prokaryotic
Structures if Eukaryotic: nucleus, membrane organelles in the cytoplasm ( mitochondria,
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endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes held in place by
the cytoskeleton. Flagella (whip like/flexible) and cilla
Structures of Prokaryotic: cell membrane, chromosomal dna that is in nucleotide,
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ribosomes, and cell wall. Flagella (stiff/rotating) pilli, fimbriae and capsules
Bacteria - ANS Found in every habitat on earth, prokaryotic, cell walls have
peptidoglycan and described by shape (coccus, bacillus, spirillum, spirochete or vibrio)
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Protists - ANS A eukaryotic organism that cannot be classified as an animal, plant, or
fungus.
Fungi - ANS Eukaryotic, lives by decomposing and absorbing nutrients. Not
photosynthetic and has cell wall made of chitin
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Helminths - ANS multicellular parasitic organisms commonly called worms or flukes
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ex: Guinea worm (Dracunculus medinensis)
Viruses - ANS Acellular, consists of proteins and genetic material (dna/rna) never
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both
Bacterial Structures "prokaryotic" - ANS Nucleoid, ribosomes, endospores, plasma
membrane, cell wall, peptidoglycan, flagella, fimbriae, pilli
Nucleoid of Bacteria - ANS central area in a prokaryotic cell that contains genetic
information, not surrounded by a membrane
Ribosomes of Bacteria - ANS site of protein synthesis. 70S composed of two
subunits (30S small and 50S large and are composed of protein and rRNA components