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Replication Termination and RNA Classes Quiz

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Replication Termination and RNA Classes Quiz

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Questions and Answers

In prokaryotic DNA, where is the DNA located?

Freely in the cytoplasm (within the nucleoid) (correct)

Inside the mitochondria

Inside the Golgi apparatus

Within a nucleus

Which of the following is a characteristic of prokaryotic DNA?

Large amount of repetitive DNA

Linear shape

No introns (correct)

Presence of histones (DNA binding proteins)

What is a distinguishing feature of eukaryotic DNA compared to prokaryotic DNA?

Repetitive DNA and introns (correct)

Located freely in the cytoplasm

Presence of plasmids

Circular shape

Which of the following elements is present in prokaryotic DNA but absent in eukaryotic DNA?

Repetitive DNA Signup and view all the answers

One key difference between prokaryotic and eukaryotic DNA is the absence of which structure in prokaryotic DNA?

Histone proteins Signup and view all the answers

In eukaryotic organisms, where does mRNA translation begin?

In the cytoplasm Signup and view all the answers

Which type of RNA undergoes major post-transcriptional modifications in eukaryotic organisms?

mRNA Signup and view all the answers

How is DNA replication halted at termination sites?

By topoisomerase I Signup and view all the answers

In prokaryotic organisms, how many types of RNA polymerase are present?

1 type Signup and view all the answers

Which RNA molecule has a very short lifespan due to breakdown by nucleases?

mRNA in prokaryotes Signup and view all the answers

What is the function of extrachromosomal elements in a cell?

Are additional DNA material other than chromosomal DNA Signup and view all the answers

Where does DNA replication primarily occur in prokaryotes?

Cytoplasm Signup and view all the answers

What is the major difference in the number of DNA polymerases between prokaryotes and eukaryotes?

Prokaryotes have 2 DNA polymerases, while eukaryotes have 4 or more Signup and view all the answers

Which type of topoisomerase is predominantly involved in prokaryotic DNA replication?

Type II topoisomerase (DNA gyrase) that cuts both DNA strands Signup and view all the answers

What is a characteristic feature of Okazaki fragments in eukaryotic DNA replication compared to prokaryotic replication?

Okazaki fragments are shorter in eukaryotes than in prokaryotes Signup and view all the answers

Where does termination of DNA replication typically occur in prokaryotic circular chromosomes?

Midway in the circular chromosome Signup and view all the answers