Part 2 Flashcards
(19 cards)
When RNA is being made, the DNA base ______ is always paired with the RNA base ______.
adenine; uracil
Translation is the ________.
manufacture of a polypeptide from an mRNA strand.
Where is translation accomplished?
In the cytoplasm
Which of the following can produce a frameshift in translation that changes the final genetic product?
A deletion
Which of the following combines with proteins to form the ribosomal subunits?
rRNA
Which of the following can lead to mutations in the DNA’s sequence?
UV light
Which of the following statements correctly distinguishes between homologous chromosomes and sister chromatids?
Both homologous chromosomes and sister chromatids describe chromosomes which are of the same lengths, containing information that controls the exact same traits. But while sister chromatids contain the exact same information for each trait the specific trait information can vary between homologous chromosomes.
Bacteriophages were used by Hershey and Chase to demonstrate that _______.
DNA is a molecule that transfers hereditary trait information.
Methylation of nucleotides in DNA is considered ________because it impacts DNA’s function and is heritable.
epigenetic
Which of the following are the sex chromosomes of a human female?
XX
In the sequence of early scientific studies seeking to understand the nature of DNA, Rosalind Franklin ___________.
took the x-ray diffraction image that was used to discover DNA’s double-helix shape.
In a DNA double helix, thymine pairs with ______ and cytosine pairs with ______.
adenine; guanine
Post transcription processing in eukaryotic cells removes ______ from the mRNA strands.
introns
A strand of DNA has a DNA sequence TATGCA. If this strand is transcribed, which of the following could be the product?
An mRNA strand with the sequence AUACGU
The DNA codon TAG codes for an amino acid carried by a tRNA with the anticodon: ______.
UAG
Which of the following is true of hydrogen bonds?
Hydrogen bonds form between the nitrogenous bases of complementary DNA strands.
What is the role of DNA polymerase in DNA replication?
NA polymerase follows the template strands DNA sequence to link complementary nucleotides to the new DNA strand.
If a strand of DNA has the sequence GCAATC, transcription will result in a_____.
single RNA strand with the sequence CGUUAG
In DNA replication, which of the following joins together sections of newly synthesized DNA, ensuring that there are no gaps between the bases of the new DNA strand?
DNA ligase
