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Chapter 9 quiz was changed a little so it could work on quizlet.

Only found in DNA, not RNA

Which is incorrect about purines?

Synthesizes new DNA only in the 5' to 3' direction

DNA polymerase III

DNA gyrases

The enzymes that help pack DNA into the cell by coiling the DNA into a tight bundle are

Messenger RNA (mRNA)

This molecule is transcribed from the DNA template strand and later translated

Contain codons within their rRNA molecules

The following pertain to ribosomes during protein synthesis except they

Chromosomes, plasmids, mitochondrial DNA, chloroplast DNA

Among the microorganisms, various genomes can include

Has ribose, has uracil, is typically one strand of nucleotides, and does not have thymine

RNA molecules differ from DNA molecules because only RNA


The DNA of microorganisms is made up of subunits called

Replication of viral RNA occurs in the host nucleus

Which of the following is incorrect about animal viruses?

DNA ligases

Which enzyme fills in the spaces between the Okazaki fragments with the correct nucleotides?

Amino acid

Groups of three consecutive bases along the DNA of a gene have the code for one ____ ____.

Histone proteins, chromosomes in a nucleus, several to many chromosomes, and elongated (not circular) chromosomes

Eukaryotic chromosomes differ from prokaryotic chromosomes because only eukaryotes have

Occurs on a ribosome in the cytoplasm

All of the following pertain to transcription except it

Transfer RNA (tRNA)

The RNA molecules that carry amino acids to the ribosomes during protein synthesis are called

DNA polymerase

The enzymes that can proofread replicating DNA, detect incorrect bases, excise them, and correctly replace them are

RNA polymerase - synthesizes RNA primers

Which enzyme is mismatched with its function in DNA replication


A sequence of bases on a gene that does not code for protein is called a/an


The nontranscribed region of DNA to which RNA polymerase binds to initiate transcription is called the

Replication fork

The site where the old DNA strands separate and new DNA strands will be synthesized is called the

An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule

Semiconservative replication refers to

One helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction

The antiparallel arrangement within DNA molecules refers to

Use spliceosomes to excise introns and then join exons

Split genes

The initiator tRNA in bacteria carries tryptophan

Which of the following is incorrect about transfer RNA?


If a codon for alanine is GCA, then the anticodon is


The duplication of a cell's DNA is called

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