Bacteria are known to change the kinds of fatty acids they produce as the temperature of their environment changes. What types of changes in fatty acids would you expect as the temperature drops? Why would this be adaptive?
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- The gobacter is a unique type of bacteria that has the ability to produce and breathe electricity. Do you think that there will be a role in the future for this type of bacteria in treating people who suffer from excess electricity in their bodies ??What types of organisms can produce their own food required to survive? A. Organisms that can do cellular respiration B. Organisms that have free-floating DNA C. Organisms that can do photosynthesis D. Organisms with a special enzymeUse the table to answer the question. In 1928, Frederick Griffith injected four groups of mice with different strains of the bacteria, Streptococcus pneumoniae. The smooth strain had a polysaccharide capsule that protected the bacteria from the mouse’s immune system. The rough strain did not have this capsule. The details of each group and the results of the experiment are shown in the table below. Bacteria After injection with bacteria Group 1 smooth strain mice died Group 2 rough strain mice survived Group 3 heat-killed smooth strain mice survived Group 4 rough strain mixed with heat-killed smooth strain mice died Which conclusion about Group 4 is MOST strongly supported by the results of the experiment? A. A virus carried DNA from the smooth strain to the rough strain. B. The rough strain took in DNA from the heat-killed smooth strain. C. The rough strain developed a genetic mutation during binary fission. D. The smooth strain…
- Antibiotics are a form of medicine used to treat bacterial infections. However, new bacteria are evolving that are resistant to antibiotics. When someone uses antibiotics, they often contribute in a small way to an increase in the number of bacteria that are resistant to antibiotics. How would an economist classify antibiotic use? Public health officials are concerned with the overuse of antibiotics, which leads to bacteria being resistant to antibiotics. What is a solution to this problem?According to the endosymbiotic theory, why was it adaptive for the larger (host) cell to keep the engulfed cell alive, rather than digesting it as food? A. The host cell would have been poisoned if it had digested the engulfed cell. B. The host cell was able to survive anaerobic conditions with the engulfed cell alive. C. The engulfed cell provided the host cell with CO2 D. The engulfed cell provided the host cell with ATP. E. The engulfed cell allowed the host cell to metabolize glucose.You discover a new species of bacteria that grows in aquatic environments with high salt levels. While studying these bacteria, you note that their internal environment is similar to the salt concentrations in their surroundings. You also discover that the internal salt concentrations of the bacteria change as the salt concentration in their environment changes. The new species can tolerate small changes in this way, but dies from large changes because it has no mechanism for altering its own internal salt levels. What type of homeostatic mechanism is this species using to regulate its internal salt levels? regulation integration assimilation conformation
- This domain is characterized by ancient bacteria that can live in extreme environments, such as volcanoes eukarya bacteria prokarya archaeaMany pathogenic bacteria are unable to make some of the metabolic compounds needed for growth and have instead evolved enzymes that enable the bacteria to actually invade human body cells. What do these bacteria expect to accomplish by this practice?Bacteria can evolve.
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