Name the amino acids that are attached to the 3' end of the E. Coli tRNA molecules with
the anticodon sequences a. GUG b. GUU, or c. CGU. - Answer a. tRNA 3' GUG 5'
i. 5' CAC 3' mRNA-Histidine
b. tRNA 3' UUG 5'
i. 5'AAC 3' mRNA-Asparagine
c. tRNA 3' UGC 5'
i. 5'ACG 3' mRNA-Threonine
Name the amino acids that are attached to the 3' end of the E. Coli tRNA molecules with
the anticodon sequences a. GUG b. GUU, or c. CGU. - Answer a. tRNA 3' GUG 5'
i. 5' CAC 3' mRNA-Histidine
b. tRNA 3' UUG 5'
i. 5'AAC 3' mRNA-Asparagine
c. tRNA 3' UGC 5'
i. 5'ACG 3' mRNA-Threonine
A short nucleic acid sequence, such as is required by DNA polymerase, is called a(n) -
Answer primer
A:T base pairs contain ____ hydrogen bonds, and G:C base pairs contain ____ hydrogen
bonds. - Answer 2:3
The first of three steps in mRNA modification is addition of a - Answer 5' cap
Nucleotides are added to the ______ of the newly synthesized DNA strand - Answer 3'
end
The polymerase that is primarily responsible for replicating DNA is - Answer DNA
Polymerase III
The small DNA sections formed during synthesis of the lagging strand are called -
Answer Okazaki fragments
, The amount of DNA in eukaryotic cells is significantly greater than in prokaryotes. With
this in mind, how is the eukaryotic DNA replicated in a timely, synchronous fashion? -
Answer Eukaryotic DNA is replicated in a timely, synchronous fashion because it consists
of a very long linear double-stranded DNA molecule within the nucleus.
During DNA replication, how are the individual Okazaki fragments of the lagging strand
converted into a whole unit? - Answer 1. Removal of RNA primer by RNase H excising
nucleotides at primer end
2. Synthesis of replacement DNA by Polymerase I
3. Sealing of adjacent DNA fragments by DNA ligase.
Protein synthesis begins at _____ of the peptide strand. - Answer the N-terminus
The third base position in the codon, which often pairs with inosine or another
nucleotide on the anticodon, is referred to as - Answer the wobble base
When a stop codon is in place at the ribosomal A site, _____ binds to the site instead of
a new aminoacyl-tRNA. - Answer a release factor
List two specific causes of DNA mutations. - Answer 1. Replication errors
2. Non-enzymatic cellular processes
3. from environmental factors.
Describe the steps involved in translation of mRNA to generate a protein, including the
all the important molecules involved and how they interact. You may answer using
bullet points if you find it easier, but make sure they are in the correct order! - Answer
1. Initiation
a. Requires initiator tRNA
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