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Questions and Answers
Which of the following is present in prokaryotes but not eukaryotes?
Which of the following is present in prokaryotes but not eukaryotes?
- exons
- polyribosomes
- spliceosomes
- simultaneous transcription and translation (correct)
DNA replication is considered semiconservative because the ______ strand will remain as half of the ______ molecule.
DNA replication is considered semiconservative because the ______ strand will remain as half of the ______ molecule.
- template, final DNA (correct)
- antisense, DNA
- sense, mRNA
- codon, anticodon
The polymerase chain reaction uses Taq polymerase rather than a DNA polymerase from E. coli, because Taq polymerase:
The polymerase chain reaction uses Taq polymerase rather than a DNA polymerase from E. coli, because Taq polymerase:
- can initiate DNA synthesis at a wider variety of sequences
- can denature a double-stranded DNA template
- is heat-stable (correct)
- introduces fewer errors during DNA synthesis
Which of the following components is not involved in the process of splicing?
Which of the following components is not involved in the process of splicing?
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In the context of DNA synthesis, the function of ligase is to ______.
In the context of DNA synthesis, the function of ligase is to ______.
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Study Notes
Prokaryotic Features
- Prokaryotes have simultaneous transcription and translation, which is not found in eukaryotes.
DNA Replication
- DNA replication is considered semiconservative because the template strand will remain as half of the final DNA molecule.
Polymerase Chain Reaction
- Taq polymerase is used in PCR instead of E. coli DNA polymerase because it is heat-stable.
DNA Ligase
- The function of ligase is to join Okazaki fragments formed during lagging strand synthesis, sealing the gaps between them.
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