Which of the following statements does not support how prokaryotes have a large amount of genetic variation   A. The mutation rate in prokaryotes is not particularly high   B. Prokaryotes have extremely short generation times and large populations   C. They can exchange DNA with many types of prokaryotes by way of horizontal gene transfer   D. They have a relatively small genome

Analyses of genomes have allowed researchers to determine that some cells have very small genomes. If you were asked to predict which organisms are likely to have smaller genomes than others, which option below would be MOST likely?   A. Bacteria that live in plant hosts are likely to have smaller genomes than those that live in animal hosts as it takes a smaller variety of metabolic processes to survive in an animal host.   B. Although less is known about Archaea than about Bacteria as fewer species have been studied, it is likely that Archaea have smaller genomes on average than Bacteria as they have fewer metabolic needs.   C. Bacteria that are endosymbionts, living within a host, can survive with smaller genomes than free-living Bacteria because they can rely on their host for many of their needs.   D. Protists generally have had smaller genomes than Bacteria because Bacteria have such large amounts of noncoding DNA.

You notice that the tails of the phages in one lab stock are shorter than the tails in another lab stock. You sequence the tape measure gene, which is the gene that determines tail length in phages. You identify a mutation that you think caused the shorter tails. Which type of mutation is the most likely cause of this phenotype and why?

14) The evolution of eukaryotic cells most likely involved A) endosymbiosis of an aerobic bacterium in a larger host cell-the endosymbiont evolved into mitochondria. B) anaerobic archaea taking up residence inside a larger bacterial host cell to escape toxic oxygen-the anaerobic bacterium evolved into chloroplasts. C) an endosymbiotic fungal cell evolved into the nucleus. D) acquisition of an endomembrane system, and subsequent evolution of mitochondria from a portion of the Golgi.

Let’s say we’ve just found a single-celled organism living in a pond. This organism has a nucleus, a cell wall, a plasma membrane, chloroplasts, and flagella. What domain/kingdom is it probably in? Group of answer choices   A. Fungi B. Eubacteria C. Plantae D. Archaea E. Protista

You have purified cytochrome C from a newly discovered species of bacteria called VCU. When you obtain the amino acid sequence you compare it to the cytochrome C amino acid sequence from other bacterial species.  Species A- 16 amino acid differences with VCU Species B- 3 amino scid differences with VCU Species C- 6 amino acid differences with VCU Species D- 18 amino acid differences with VCU   List the bacterial species (A-D) from closest related to VCU to most distantly related to VCU

Archaea are most closely related to which of the following major groups on the tree of life?   a. Bacteria   b. Eucarya   c. Plantae   d. None of the above

The membrane lipids of archaea are most similar to those found in: a. none of the above b. chloroplasts c. mitochondria d. bacteria e. eukaryotes

For 'transformation' to occur in bacterial cells, certain conditions must be satisfied. Check all the conditions that apply--Select one or more: a.low nutrient availability b.high cell density c.presence of different bacterial species/strains d.low cell density e.presence of antibiotics

Bacteria can acquire DNA directly from the environment through: please explain the answer a.Conjugation b.Transduction c.Natural transformation d.All of the above