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A bacterium is_______ (choose all that apply).
a. an organism c. an animal
b. single-celled d. a eukaryote
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- The central dogma of life applies to ________. a. eukaryotes b. prokaryotes c. both prokaryotes and eukaryotesThe presence of a membrane-enclosed nucleus is a characteristic of ________. a. prokaryotic cells b. eukaryotic cells c. living organisms d. bacteriaSelect a statement that is not true about bacteria A. Some bacteria cause human disease B. Some bacteria are autotrophs C. Bacteria can be found within rocks kilometers below the Earth’s surface D. All organisms with cells containing a membrane-enclosed nucleus and organelles are eukaryotes, whereas all organisms with cells lacking a membrane-enclosed nucleus and organelles are bacteria
- A multicellular organism is: a. A group of differentiated eukaryotic cells that work together to support the function of an organism b. A colony of single-celled organisms O c. The simplest form of life on Earth O d. Only contains prokaryotic cellsProkaryotes depend on ________ to obtain somematerials and to get rid of wastes.a. ribosomesb. flagellac. cell divisiond. diffusionThe presence of a membrane-enclosed nucleus is a characteristic of ________. a. prokaryotic cells b. eukaryotic cells c. all cells d. viruses
- When utilizing the microscope to identify the cells in an unknown sample, you notice that the cells all contain a nucleus. Based on this info you eliminate the following from your list of potential organisms: A. Bacterium B. Archaea C. Eukaryote D. A and B E. None of the aboveThe surface-to-volume ratio _______. a. does not apply to prokaryotic cells. b. constrains cell size. c. is part of the cell bodyYou discover a new bacterium. Its cell envelope shows high concentrations of phosphatidylethanolmine and another type of phospholipid that is associated with long polysaccharide chains of unusual sugars. This organism is likely? A. Gram-positive B. Gram-negative O C. Archaea D. Eukaryote E. a or b
- Finding out how a bacterial cell duplicate itself is considered: a. A Discovery b. An invention c. An innovation d. A technology e. A patentSelect the letter of the choice that best completes the statement. Organisms that can only live inside the cells are calleda. flora.b. bacteria.c. viruses.d. fungi.Which of the following statement about the bacterial cell wall is INCORRECT? a. The cell wall is relatively nonpermeable and restricts the passage of sugars and amino acids. b. Gram-positive cells have more peptidoglycan in theircell walls than Gram-negative cells. c. Gram-negative cells have a membrane both inside andoutside their cell walls. d. The cell wall establishes a bacterium’s shape as a coccus,bacillus, or spirillum.