Multiple Choice
Which of the following reactions is an example of a nucleophilic substitution reaction in organic chemistry?
3. Acids and Bases
Organic Chemistry Reactions
Multiple Choice
Which of the following statements is not true about bacterial plasmids?
A
Plasmids are essential for bacterial survival under all conditions.
B
Plasmids can replicate independently of the bacterial chromosome.
C
Plasmids can carry genes that confer antibiotic resistance.
D
Plasmids are typically circular DNA molecules.
Verified step by step guidance1
Understand the role of plasmids in bacteria: Plasmids are small, circular DNA molecules found in bacteria that are separate from the chromosomal DNA. They often carry genes that can be beneficial to the bacteria, such as antibiotic resistance genes.
Recognize the independence of plasmids: Plasmids can replicate independently of the bacterial chromosome, meaning they do not rely on the bacterial cell's main DNA replication machinery to reproduce.
Identify the non-essential nature of plasmids: While plasmids can provide advantageous traits, they are not essential for the basic survival of bacteria under all conditions. Bacteria can survive without plasmids, especially in environments where the traits they confer are not needed.
Consider the structure of plasmids: Plasmids are typically circular, which allows them to be easily transferred between bacteria through processes like conjugation.
Evaluate the statements: The statement 'Plasmids are essential for bacterial survival under all conditions' is not true because plasmids are not necessary for survival in all environments, only in specific conditions where the genes they carry provide a survival advantage.
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