Assume that you have a eukaryotic cell with three chromosomes within it. How many 5’ ends would there be?
6
2
3
5
In the ribosome, what pairs with the codon?
IDFK
IDFC
IDK
IDCF
Uridine is a nucleotide in DNA.
DNA replication in eukaryotes is sped up by multiple origins of replication.
RNA synthesis, also called RNA transcription occurs in three phases. List them from beginning to end in order.
Initiation, elongation, and termination
Elongation, initiation, and termination
Termination, elongation, and Initiation
In the ribosome, what is the name of the bond that links one amino acid to the next?
A peptide bond
ATP
A pepto bond
A tidepod
The DNA polymerase that replicates the parental strand of DNA reads the parental DNA from 5’ to 3” and makes a new DNA strand from 3’ to 5’.
During DNA replication is greatly reduced by enzymes that proof read the newly replicated DNA.
Which enzyme is used first to permit DNA polymerase III to begin replicating the 3’ strand?
Conservative replication
Parental strand
Primase
RNA
Mutation rate
During mRNA maturation what is the name of the part of the mRNA that is removed?
Introns
Ribose
Proteolysis
During DNA replication in the lagging strand there is production of this component?
Okazaki fragment
mRNA
tRNA
proteins
none of the above
How many “stop” codons exist?
Strands of the backbone of DNA are parallel?
RNA is double stranded.
Which sugar is present in RNA?
Methionine
Nucleosome
Thymine
Which nucleotide is different in RNA compared to DNA?
Uridine, it takes the place of thymidine
Purines
Pyramidines
The double helix of DNA is wrapped about 1¾ times around which of these components?
Helicase
DNA polymerase III
DNA polymerase I
DNA ligase
Replication of DNA is semi-conservative.
Protein synthesis changes from the language of nucleotides amino acids Oxygen ATP( nucleotides, amino acids, Oxygen, ATP ) to the language of amino acids nucleotides ATP CO2( amino acids, nucleotides, ATP, CO2 ).
Which enzyme unwraps the double helix?
List one type of post-translational modification.
Amino Acids
In eukaryotic cells the start codon for protein synthesis is methionine elongation peptide thymine( methionine, elongation, peptide, thymine ).
The genetic code for the conversion of mRNA codons to proteins has redundancy.
List (select) the two basic categories of nitrogenous bases in nucleic acids.
Protein
There are two types of protein synthesis in eukaryotic cells. These two types can be distinguished because the polyribosome is either free non-existent leading( free, non-existent, leading ) or membrane-bound dissolved floating( membrane-bound, dissolved, floating ) .
In DNA, what does the nucleotide labeled as A pair with?
T (thymine)
K (Potassium)
O (Oxygen)
H (Hydrogen)
How many hydrogen bonds are there between an A and its paired nucleotide?
For DNA Polymerase III to work which of these components has to act first?
Newly replicated strand
Which strand is produced more rapidly?
Lagging strand
Leading strand
3’
5’
In the lagging strand, the DNA is read from the parental DNA’s 3’ to 5’ end.
Draw the sugar in DNA and label the carbons as discussed in the lecture. Then circle the carbon that is different in RNA.