Final Exam Solved Questions - Principles of
Biochemistry BCH 4013, Exams of
Biology|Already
................. is required for aminoacyl-tRNA synthetase to attach an amino acid to its tRNA. - ansATP
5-terminal cap structure of eukaryotic mRNA is an: - ans7-methylguanosine joined to mRNA 5'-5'
triphosphate linkage
A gene contains two 100 bp intorns and three 50 bp exons. about how long is the mature tRNA
transcribed from this gene? - ans150 (3 x 50)
A key reaction in gene activation is the acetylation of which amino acid in the histones? - anslysine
A nucleic acid is a polymer of nucleotides held together by ........ - ans3'-5' phophodiester linkages
About how many nucleosomes could be made from a DNA strand consisting of 1000 base pairs? - ans5
Amino acids are carried to the site of protein synthesis by - anstRNA
An activation protein involved in gene regulation can have the following domains: - ansDNA binding
domain
activation domain
NOT transmembrane domain
An Okazaki fragment is a ......... - anssegment of DNA that is an intermediate in the synthesis of the
lagging strand.
An ordered reaction pathway by which cellular chemistry proceeds; produces and utilizes ATP; has two
components, anabolism and catabolism. Not characterized by single reactions with large energy releases.
- ansmetabolism
As a newly synthesized protein molecule leaves the ribosome, it may be aided in folding by ............. -
ansmolecular chaperones
As the polypeptide chain is synthesized, it must move from the amino acid side (A site) of the ribosome to
the peptide site (P site) in order for new tRNA molecules to cone in and bind at the amino acid site. What
is the source of energy which powers this translocation? - ansGTP
At the replication fork the leading strand is synthesized continuously while the lagging strand is
synthesized discontinuously. - ans
At the ribosome, the template mRNA is translated in the 5' to 3' direction, while the protein is synthesized
in the N terminal to C terminal direction. - ans
Compounds that contain nitrogenous base, a pentose, and a phosphate group are ............... -
ansnucleotides
Cyanide and carbon monoxide are lethal poisons because.......... - ansthey can block electron transfer in
mitochondria.
DNA is unwound by.......... - anshelicase
DNA polymerase requires ................ for synthesis of DNA to occur. - ansan RNA primer
Biochemistry BCH 4013, Exams of
Biology|Already
................. is required for aminoacyl-tRNA synthetase to attach an amino acid to its tRNA. - ansATP
5-terminal cap structure of eukaryotic mRNA is an: - ans7-methylguanosine joined to mRNA 5'-5'
triphosphate linkage
A gene contains two 100 bp intorns and three 50 bp exons. about how long is the mature tRNA
transcribed from this gene? - ans150 (3 x 50)
A key reaction in gene activation is the acetylation of which amino acid in the histones? - anslysine
A nucleic acid is a polymer of nucleotides held together by ........ - ans3'-5' phophodiester linkages
About how many nucleosomes could be made from a DNA strand consisting of 1000 base pairs? - ans5
Amino acids are carried to the site of protein synthesis by - anstRNA
An activation protein involved in gene regulation can have the following domains: - ansDNA binding
domain
activation domain
NOT transmembrane domain
An Okazaki fragment is a ......... - anssegment of DNA that is an intermediate in the synthesis of the
lagging strand.
An ordered reaction pathway by which cellular chemistry proceeds; produces and utilizes ATP; has two
components, anabolism and catabolism. Not characterized by single reactions with large energy releases.
- ansmetabolism
As a newly synthesized protein molecule leaves the ribosome, it may be aided in folding by ............. -
ansmolecular chaperones
As the polypeptide chain is synthesized, it must move from the amino acid side (A site) of the ribosome to
the peptide site (P site) in order for new tRNA molecules to cone in and bind at the amino acid site. What
is the source of energy which powers this translocation? - ansGTP
At the replication fork the leading strand is synthesized continuously while the lagging strand is
synthesized discontinuously. - ans
At the ribosome, the template mRNA is translated in the 5' to 3' direction, while the protein is synthesized
in the N terminal to C terminal direction. - ans
Compounds that contain nitrogenous base, a pentose, and a phosphate group are ............... -
ansnucleotides
Cyanide and carbon monoxide are lethal poisons because.......... - ansthey can block electron transfer in
mitochondria.
DNA is unwound by.......... - anshelicase
DNA polymerase requires ................ for synthesis of DNA to occur. - ansan RNA primer
