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Molecular Biology MCQ

A(n) _______ operon is turned off unless needed.

Repressible.

Constitutive

Inducible.

Clustered.

Answer

Correct Answer: Inducible.

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The initial product of transcription is referred to as the _____ transcript.

Primary

Inhibits translation

False

RNA processing.

True

Answer

Correct Answer: Primary

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During telophase ______.

44 autosomes and 2 X chromosomes

Homologous chromosomes line up in the middle of the cell

The events of prophase are reversed

Chromosomes line up in the middle of the cell

Answer

Correct Answer: The events of prophase are reversed

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During replication, each parent dna strand serves as a _____ for synthesis of new dna strands.

Scaffold

Reservoir

Copy point

Template

Comparison molecule

Answer

Correct Answer: Template

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During replication, the original "parent" dna _____.

Translate mRNA to produce a specific amino acid sequence

Serves as the template for the creation of two complete sets of DNA

Specific nucleotide sequence in DNA that signals a stop

None of these

Answer

Correct Answer: Serves as the template for the creation of two complete sets of DNA

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Usually, enzymes are ______.

Fats

Steroids

Chemical reactions

Proteins

Answer

Correct Answer: Proteins

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For a operon, transcription is normally on, and it is turned off by an active .

Negative inducible; repressor

Negative repressible; repressor

Positive repressible; activator

Positive inducible; activator

Answer

Correct Answer: Negative inducible; repressor

Note: This Question is unanswered, help us to find answer for this one

Molecular Biology MCQ

A(n) _______ operon is turned off unless needed.

The initial product of transcription is referred to as the _____ transcript.

During telophase ______.

During replication, each parent dna strand serves as a _____ for synthesis of new dna strands.

During replication, the original "parent" dna _____.

Usually, enzymes are ______.

For a ______ operon, transcription is normally on, and it is turned off by an active ______.

For a operon, transcription is normally on, and it is turned off by an active .