A Researcher Is Studying a Specific Strain of Bacteria

question 149

Multiple Choice

A researcher is studying a specific strain of bacteria. In one of her cultures, she notices that the bacteria are antibiotic-resistant. As there are no genes in the chromosome that could confer antibiotic-resistance in these bacteria, the researcher assumes this is the result of a spontaneous mutation. What is another possible explanation?

• A)A gene conferring antibiotic resistance is present on ribosomes.
• B)A gene conferring antibiotic resistance is present on peptidoglycans.
• C)A gene conferring antibiotic resistance is present on plasmids.
• D)A gene conferring antibiotic resistance is present on mitochondria.

Explain the significance of specific physiological systems (e.g., respiratory, digestive) in invertebrates.

Understand the concept of ecdysis and its role in growth and development in ecdysozoans.

Identify the ecological roles and evolutionary significance of various invertebrate groups.

Explain the developmental patterns and life cycles of insects and other arthropods.

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Definitions:

Delirium Tremens

A severe form of alcohol withdrawal featuring sudden and severe mental or nervous system changes.

Intoxicated

A condition resulting from the excessive consumption of alcohol or drugs, leading to impaired cognitive and physical abilities.

Korsakoff's Syndrome

A chronic memory disorder caused by severe deficiency of thiamine, most commonly related to alcohol abuse, characterized by short-term memory loss and confabulation.

College Dropouts

Individuals who have discontinued their college education before completing their degree.