©Themoon EXAM SOLUTIONS
25/11/2024 13:32PM
BIOC 3021 Exam Questions and Verified
Answers
tRNA - Answers✓✓Transfer RNA
Decodes mRNA into a protein
Functions at the ribosome during Translation
rRNA - Answers✓✓Ribosomal RNA
Essential for protein synthesis
Predominant material in a ribosome (60%)
Catalyzes polypeptide formation (Ribozyme)
mRNA - Answers✓✓Messanger RNA
Conveys genetic info from DNA to ribosome
Specifies the amino acid sequence of protein products
Which type of RNA catalyzes the synthesis of proteins? - Answers✓✓rRNA
What enzyme complex makes DNA from RNA? - Answers✓✓Reverse transcriptase
The first half of DNA restriction site has the sequence AACC, what are the next four bases on
the same chain? - Answers✓✓GGTT
, ©Themoon EXAM SOLUTIONS
25/11/2024 13:32PM
What percentage of human chromosomal DNA codes for proteins? - Answers✓✓1-2%
DNA replication involves the nucleophilic attack on a deoxynucleotide phosphate by a: -
Answers✓✓3' hydroxyl group of deoxyribose
What additional factor does lagging strand DNA synthesis require that is not needed for leading
strand synthesis? - Answers✓✓a DNA ligase
Various forms of DNA that vary in the degree of winding are called: -
Answers✓✓Topoisomers
If the first four bases are ATGC, what are the next four bases on the SAME DNA strand? -
Answers✓✓GCAT
During DNA replication the lagging DNA strand is READ at its: - Answers✓✓3' end
In addition to hydrogen bonding, the stability of double helix between complementary DNA
chains is promoted by? - Answers✓✓Aromatic stacking
In the structure of ATP the inner phosphate group is joined to the 5' carbon of ribose by what
type of bond? - Answers✓✓Phosphoester
What feature is found in DNA synthesis but NOT in RNA synthesis? - Answers✓✓Repair
mechanisms which remove incorrect bases
Which statement is TRUE about ribosomes? - Answers✓✓Protein synthesis is catalyzed by
ribosomal RNA
, ©Themoon EXAM SOLUTIONS
25/11/2024 13:32PM
The process of cutting DNA strands at specific sites is accomplished by? -
Answers✓✓Restriction endonucleases
Which of the following is needed for replication of DNA but NOT for transcription of DNA to
RNA? - Answers✓✓a primer strand
In bacteria a protein with 1200 amino acids might be coded by a sequence of DNA with an
open reading frame of - Answers✓✓3600 bases (3 for each AA)
Which of the following statements is TRUE about the coding strand of DNA? - Answers✓✓It
has the same base sequence as the transcript except for the substitution of U's
The signals at the ends of introns in immature mRNA, that code for their removal are: -
Answers✓✓GU and AG
If a restriction site in a circular plasmid has the sequence GGAATTCC, and the endonucleas
cuts between A and A, how many unpaired bases will occur on each strand at the opening that
is produced? - Answers✓✓2
In RNA synthesis to which base in the DNA is the U in the RNA product paired? -
Answers✓✓A
At neutral pH, DNA carries a negative charge because of the - Answers✓✓Phosphate
The critical ingredient in PCR which allows for multiple rounds of DNA synthesis is? -
Answers✓✓The heat resistant DNA polymerase
25/11/2024 13:32PM
BIOC 3021 Exam Questions and Verified
Answers
tRNA - Answers✓✓Transfer RNA
Decodes mRNA into a protein
Functions at the ribosome during Translation
rRNA - Answers✓✓Ribosomal RNA
Essential for protein synthesis
Predominant material in a ribosome (60%)
Catalyzes polypeptide formation (Ribozyme)
mRNA - Answers✓✓Messanger RNA
Conveys genetic info from DNA to ribosome
Specifies the amino acid sequence of protein products
Which type of RNA catalyzes the synthesis of proteins? - Answers✓✓rRNA
What enzyme complex makes DNA from RNA? - Answers✓✓Reverse transcriptase
The first half of DNA restriction site has the sequence AACC, what are the next four bases on
the same chain? - Answers✓✓GGTT
, ©Themoon EXAM SOLUTIONS
25/11/2024 13:32PM
What percentage of human chromosomal DNA codes for proteins? - Answers✓✓1-2%
DNA replication involves the nucleophilic attack on a deoxynucleotide phosphate by a: -
Answers✓✓3' hydroxyl group of deoxyribose
What additional factor does lagging strand DNA synthesis require that is not needed for leading
strand synthesis? - Answers✓✓a DNA ligase
Various forms of DNA that vary in the degree of winding are called: -
Answers✓✓Topoisomers
If the first four bases are ATGC, what are the next four bases on the SAME DNA strand? -
Answers✓✓GCAT
During DNA replication the lagging DNA strand is READ at its: - Answers✓✓3' end
In addition to hydrogen bonding, the stability of double helix between complementary DNA
chains is promoted by? - Answers✓✓Aromatic stacking
In the structure of ATP the inner phosphate group is joined to the 5' carbon of ribose by what
type of bond? - Answers✓✓Phosphoester
What feature is found in DNA synthesis but NOT in RNA synthesis? - Answers✓✓Repair
mechanisms which remove incorrect bases
Which statement is TRUE about ribosomes? - Answers✓✓Protein synthesis is catalyzed by
ribosomal RNA
, ©Themoon EXAM SOLUTIONS
25/11/2024 13:32PM
The process of cutting DNA strands at specific sites is accomplished by? -
Answers✓✓Restriction endonucleases
Which of the following is needed for replication of DNA but NOT for transcription of DNA to
RNA? - Answers✓✓a primer strand
In bacteria a protein with 1200 amino acids might be coded by a sequence of DNA with an
open reading frame of - Answers✓✓3600 bases (3 for each AA)
Which of the following statements is TRUE about the coding strand of DNA? - Answers✓✓It
has the same base sequence as the transcript except for the substitution of U's
The signals at the ends of introns in immature mRNA, that code for their removal are: -
Answers✓✓GU and AG
If a restriction site in a circular plasmid has the sequence GGAATTCC, and the endonucleas
cuts between A and A, how many unpaired bases will occur on each strand at the opening that
is produced? - Answers✓✓2
In RNA synthesis to which base in the DNA is the U in the RNA product paired? -
Answers✓✓A
At neutral pH, DNA carries a negative charge because of the - Answers✓✓Phosphate
The critical ingredient in PCR which allows for multiple rounds of DNA synthesis is? -
Answers✓✓The heat resistant DNA polymerase
