Practice quiz questions (all units) Flashcards
The two strands of DNA are held together by hydrogen bonds.
True or False?
True.
The phosphate and deoxyribose molecules form the backbone of the DNA strand.
True or False?
True.
The two DNA strands run antiparallel to each other.
True or False?
True.
The base pairs lie in the exterior of the DNA molecule.
True or False?
False.
The base pairs lie in the interior of the DNA molecule.
Given the following DNA strand:
5’-TAGCAACCGAATC-3’
What is the complementary strand?
5’-GATTCGGTTGCTA-3’
or
3’-ATCGTTGGCTTAG-5’
Prokaryotic mRNA has a Shine-Dalgarno sequence that binds to the ribosomal RNA.
True or False?
True.
In eukaryotes, the Initiator Methionine-tRNA binds the mRNA followed by the small ribosomal subunit.
True or False?
False.
In eukaryotes, the Initiator Methionine-tRNA binds the translation initiation factors and the small ribosomal subunit followed by the the mRNA.
Translation is initiated by the binding of an initiator Methionine-tRNA and translation initiation factors to a small ribosomal subunit.
Next, the 5’-capped end of the mRNA associates with the initiator Met-tRNA- small ribosomal complex
The complex moves along the mRNA until a start codon (AUG) is found
Once the UAC anticodon sequence of the initiator Met-tRNA base pairs with the AUG sequence of the mRNA, the large ribosomal subunit joins the complex to form the initiation complex
In both Prokaryotes and Eukaryotes, the large ribosomal subunit assembles after the mRNA
and small ribosomal subunit have assembled.
True or False?
True.
The small and large ribosomal subunits are smaller in Prokaryotes than Eukaryotes.
True or False?
True.
What is the purpose of the 5’-cap in a eukaryotic messenger RNA transcript?
To help the ribosome bind the mRNA
During DNA polymerization, which phosphate group from the nucleotide becomes part of the DNA strand?
Alpha-phosphate
The discovery of the cell and the description of heredity rules by Mendel were two milestones in ‘modern biotechnology’.
True or False?
False.
These are milestones in traditional biotechnology.
The use of fermenting organisms and the discovery of DNA are two milestones in ‘modern biotechnology’.
True or False?
False.
These are milestones in traditional biotechnology.
The discovery of DNA and the development/use of sequencing technologies are two milestones in ‘modern biotechnology’.
True or False?
True.
Plant breeding for food production and the discovery of DNA were two milestones in ‘modern biotechnology’.
True or False?
False.
These are milestones of traditional biotechnology.
