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Questions and Answers
Which type of enzyme is always present in a cell regardless of the presence of a substrate?
Which type of enzyme is always present in a cell regardless of the presence of a substrate?
- Constitutive enzyme (correct)
- Specialized enzyme
- Inducible enzyme
- Generalized enzyme
What type of enzyme is expressed only in the presence of its corresponding substrate?
What type of enzyme is expressed only in the presence of its corresponding substrate?
- Constitutive enzyme
- Specialized enzyme
- Generalized enzyme
- Inducible enzyme (correct)
What is the main characteristic of generalized transduction?
What is the main characteristic of generalized transduction?
- Always involves a plasmid
- Transfer of specific host genes during phage assembly
- Random packing of bacterial DNA fragments inside phage heads (correct)
- Occurs only in eukaryotic cells
In specialized transduction, what is transferred during phage assembly?
In specialized transduction, what is transferred during phage assembly?
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An F pilus is essential for:
An F pilus is essential for:
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Study Notes
Enzymes
- Constitutive enzymes are always present and expressed in a cell, regardless of the presence of a substrate.
- Inducible enzymes are only expressed when their corresponding substrate is present.
Transduction
Generalized Transduction
- Involves random packing of bacterial DNA fragments inside phage heads during phage assembly.
Specialized Transduction
- Involves the transfer of specific host genes during phage assembly.
Conjugation
- F pilus is essential for chromosome transfer by conjugation.
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Description
Understand the difference between constitutive and inducible enzymes, and distinguish between generalized and specialized transduction in microbiology.
