WGU D311 OA Final Exam/ WGU D311 Microbiology Objective Assessment Final Exam| 266 Actual Exam questions answered 100% correctly| Latest Update 2026/2027

WGU D311 OA Final Exam/ WGU D311 Microbiology Objective Assessment Final Exam| 266 Actual Exam questions answered 100% correctly| Latest Update 2026/2027 Which statement describes prokaryotic cells? a) Prokaryotic cells are found in coccus form in both pairs and clusters. b) Prokaryotic cells have multiple rod-shaped chromosomes. c) Prokaryotic cells are found in chains of rods but not single rods. d) Prokaryotic cells have a nucleus surrounded by a complex nuclear membrane. A This is correct because prokaryotic cells can form cocus in both pairs and clusters Which statement describes eukaryotic cells? a) The exoskeletons of eukaryotic cells maintain and support the cells' shapes. b) The nuclei of eukaryotic cells are surrounded by complex nuclear membranes. c) The genomes of eukaryotic cells are usually packaged in single circular chromosomes.d) The organelles of eukaryotic cells are held in place by semipermeable exoskeletons. B Which statement describes eukaryotic flagella? a) Eukaryotic flagella can cover the entire surface of a cell. b) Eukaryotic flagella are rotating structures. c) Eukaryotic flagella have twelve pairs of microtubules. d) Eukaryotic flagella are flexible, whip-like structures. D Which statement describes the endomembrane system? a) It is attached to the smooth endoplasmic reticulum and makes proteins for insertion into the cell membrane. b) It includes the Golgi apparatus, lysosomes, and vesicles. c) It is a system that uses diffusion to transport materials inside of the cell. d) It lacks membrane-bound organelles. BWhich statement accurately describes similarities between protozoa and fungi? a) Both perform chemosynthesis. b) Both can be harmful or harmless depending on the context. c) Both are made of long filaments that form visible colonies. d) Both move with help from cilia and flagella. B Why are algae considered photosynthetic organisms? a) Algae cell walls are constructed with a material called peptidoglycan. b) Algae contain substances that can be converted into biofuels. c) Algae produce chemical energy from the sun's light energy. d) Algae create waste products that other organisms can use to make energy. C Why are plasmids important to the survival of organisms? a) Plasmids exclusively contain the genes responsible for cellular replication in bacteria. b) Plasmids can store excess nutrients in the cytoplasm of the cell.c) Plasmids protect the bacterial genome in a dormant state during unfavorable environmental conditions. d) Plasmids carry genetic material, apart from the genome, that can benefit the organism. D Plasmids often carry genes that can offer beneficial traits such as antibiotic resistance Which statement describes bacteria? a) Some bacteria are eukaryotes. b) Some bacteria have cell walls composed of mycolic acid. c) Some bacteria are motile by cilia. d) Some bacteria have cell walls composed of chitin. B Mycolic acid can be found in the cell walls of acid-fast bacteriaWhy are prokaryotes vital to life? Prokaryotes are vital to life because they are able to recycle elements like carbon and nutrients. Organisms like animals need organic carbon in order to grow but, unlike prokaryotes, they are unable to use inorganic carbon sources like CO2. The enzyme nitrogenase is only found in prokaryotes Which aspect of nutrient cycling is performed only by prokaryotes? a) Respiration process b) Carbon fixation c) Nitrate assimilation d) Nitrogen fixation D The enzyme nitrogenase is only found in prokaryotes; it is vital to life and the process of nitrogen fixation How does microbial bioremediation benefit the environment? a) By helping to minimize the growth of pathogens in different parts of the bodyb) By helping to metabolize and remove pollutants in the atmosphere c) By producing complex organic pharmaceutical compounds used in antibiotics, vaccines, and vitamins d) By producing gases, such as carbon dioxide, which are used to make biofuels B This is the correct answer because the definition of bioremediation is the process of bacteria using a toxic structure to grow which leads to it being removed from the environment. Occurs often by breaking it down into its nontoxic components What describes the relationship of pathogens to virulence?