Which of the following statements regarding a DNA double helix is true? The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine.
DNA replication uses each strand of a DNA molecule as a template for the creation of a new strand.
When on...
Bio 1100 Exam 4 Practice Questions and
Answers
Which of the following statements regarding a DNA double helix is true? ✅The amount
of adenine is equal to the amount of thymine, and the amount of guanine is equal to the
amount of cytosine.
DNA replication ✅uses each strand of a DNA molecule as a template for the creation
of a new strand.
When one DNA molecule is copied to make two new DNA molecules, the resulting DNA
molecules contain ✅50% of the parent DNA.
Multiple origins of replication on the DNA molecules of eukaryotic cells serve to
✅shorten the time necessary for DNA replication.
Which of the following enzymes catalyzes the elongation of a new DNA strand? ✅DNA
polymerase III
Why does a DNA strand grow only in the 5ʹ to 3ʹ direction? ✅because DNA
polymerases can only add nucleotides to the 3ʹ end of the growing molecule
The transfer of genetic information from DNA to RNA is called ✅transcription
The directions for each amino acid in a polypeptide are indicated by a codon that
consists of ________ nucleotides in an RNA molecule. ✅three
We would expect that a 15-nucleotide sequence that includes a stop codon at the end
(as part of the 15-nucleotide sequence) will direct the production of a polypeptide that
consists of ✅four amino acids
In the genetic code ✅many amino acids are specified by more than one codon
Which of the following enzymes catalyzes the production of a strand of RNA from DNA?
✅RNA polymerase
Which of the following occurs when RNA polymerase attaches to the promoter DNA?
✅initiation of a new RNA molecule
________ marks the end of a gene and causes transcription to stop. ✅A terminator
Where do transcription and translation occur in prokaryotic cells? ✅in the cytoplasm
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