MCQ Bank
The spliceosome is composed of approximately
- A) 200 proteins and ten RNAs
- B) 100 proteins and 3 RNAs
- C) 50 proteins and 2 RNAs
- D) 150 proteins and five RNAs
The number of introns within a gene
- A) Varies enormously among different genes
- B) Is always the same in all organisms
- C) Is always low in animal genes
- D) Is always high in yeast genes
The specific nucleotide sequences marking intron–exon borders are found within:
- A) Pre-mRNA
- B) Ribosomal RNA
- C) Mature mRNA
- D) DNA only
U2AF is composed of:
- A) Three subunits
- B) Four subunits
- C) One subunit
- D) Two subunits
The coding sequence in many eukaryotic genes is:
- A) Continuous without breaks
- B) Found only in phage
- C) Interrupted by non-coding stretches
- D) Shorter than bacterial genes
The 3′ splice site is sometimes referred to as the:
- A) Initiator site
- B) Donor site
- C) Enhancer site
- D) Acceptor site
In terms of size, the spliceosome is similar to:
- A) Lysosome
- B) Nucleus
- C) Mitochondrion
- D) Ribosome
Initially, the 5′ splice site is recognized by:
- A) U2AF
- B) U2 snRNP
- C) U1 snRNP
- D) Spliceosome
Which of the following is a class of splicing found in cells?
- A) Nuclear pre-mRNA splicing
- B) Ribosomal RNA splicing
- C) tRNA charging
- D) DNA replication
Unusual termination of transcription may be triggered by:
- A) RNA polymerase activation
- B) Presence of transcription factors
- C) Proper gene regulation
- D) Damaged DNA or unexpected hindrances
The discovery of self-splicing introns demonstrates that:
- A) Proteins alone perform splicing
- B) DNA catalyzes splicing
- C) RNA can catalyze RNA splicing
- D) Ribosomes perform splicing
Unusual termination of transcription may be triggered by:
- A) Damaged DNA or unexpected hindrances
- B) Presence of transcription factors
- C) Proper gene regulation
- D) RNA polymerase activation
The discovery of self-splicing introns demonstrates that:
- A) DNA catalyzes splicing
- B) Proteins alone perform splicing
- C) RNA can catalyze RNA splicing
- D) Ribosomes perform splicing
The specific nucleotide sequences marking intron–exon borders are found within:
- A) DNA only
- B) Pre-mRNA
- C) Mature mRNA
- D) Ribosomal RNA
U2AF is composed of:
- A) Four subunits
- B) Three subunits
- C) Two subunits
- D) One subunit
In terms of size, the spliceosome is similar to:
- A) Ribosome
- B) Mitochondrion
- C) Nucleus
- D) Lysosome
Initially, the 5′ splice site is recognized by:
- A) U2AF
- B) Spliceosome
- C) U1 snRNP
- D) U2 snRNP
Mr.Akram steals a bearer check and gives it to Mr. Kahlid against his debt payment. Mr.Khalid fails to receive the payment due to stop payment of that stolen cheque. Who is holder in due course in this case?
- A) All of the given options
- B) Bank
- C) Mr.Khalid
- D) Mr.Akram
_______________________ is the maker of bill of exchange in a trade agreement.
- A) Principal
- B) Exporter
- C) Importer
- D) None of the available options
Full endorsement is also called ____________________________.
- A) Special endorsement
- B) Blank endorsement
- C) Restrictive endorsement
- D) Partial endorsement