GENETIC ANALYSIS AN INTEGRATED
APPROACH UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
◉ In RNA, three of the bases are the same as bases in DNA. Which
base is different and what is it replaced by?
Answer: Thymine is replaced by uracil.
◉ In RNA, the sugar ______ is used, rather than deoxyribose, which is
used in DNA.
Answer: Ribose
◉ RNA strands are assembled by formation of __________ bonds
between the 5' phosphate
of one nucleotide and the 3' hydroxyl of the
adjacent one
Answer: phosphodiester
◉ __________ catalyzes the addition of each ribonucleotide to the 3'
end of the nascent strand, and forms phosphodiester bonds between
nucleotides.
Answer: RNA polymerase
, ◉ How many phosphates are eliminated in the process of RNA
synthesis?
Answer: 2, as are also eliminated in DNA synthesis
◉ ______________ is produced by protein-producing genes and is a
short-lived intermediary between DNA and protein.
Answer: Messenger RNA (mRNA)
◉ ____________ is the only type of RNA that undergoes translation.
Answer: mRNA
◉ True or false: Transcription of mRNA is often followed by post-
transcriptional processing.
Answer: True
◉ _____________ do not encode proteins, but instead perform
functional roles in the cell.
Answer: Functional RNAs
◉ __________________ are encoded in dozens of forms and are
responsible for binding an amino acid and depositing it for inclusion
into a growing protein chain.
Answer: Transfer RNAs (tRNAs)
APPROACH UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
◉ In RNA, three of the bases are the same as bases in DNA. Which
base is different and what is it replaced by?
Answer: Thymine is replaced by uracil.
◉ In RNA, the sugar ______ is used, rather than deoxyribose, which is
used in DNA.
Answer: Ribose
◉ RNA strands are assembled by formation of __________ bonds
between the 5' phosphate
of one nucleotide and the 3' hydroxyl of the
adjacent one
Answer: phosphodiester
◉ __________ catalyzes the addition of each ribonucleotide to the 3'
end of the nascent strand, and forms phosphodiester bonds between
nucleotides.
Answer: RNA polymerase
, ◉ How many phosphates are eliminated in the process of RNA
synthesis?
Answer: 2, as are also eliminated in DNA synthesis
◉ ______________ is produced by protein-producing genes and is a
short-lived intermediary between DNA and protein.
Answer: Messenger RNA (mRNA)
◉ ____________ is the only type of RNA that undergoes translation.
Answer: mRNA
◉ True or false: Transcription of mRNA is often followed by post-
transcriptional processing.
Answer: True
◉ _____________ do not encode proteins, but instead perform
functional roles in the cell.
Answer: Functional RNAs
◉ __________________ are encoded in dozens of forms and are
responsible for binding an amino acid and depositing it for inclusion
into a growing protein chain.
Answer: Transfer RNAs (tRNAs)
