Podcast
Questions and Answers
What is the function of a centromere during mitosis and meiosis?
What is the function of a centromere during mitosis and meiosis?
- Anchors the chromosome to the spindle fibers (correct)
- Records the number of cell divisions
- Protects RNA from degradation
- Contains highly repeated sequences like (TTAGGG)n
Which molecules signal and control transcription in gene sequences?
Which molecules signal and control transcription in gene sequences?
- Exons
- Introns
- Telomeres
- Promoters/enhancers (correct)
What is the primary role of the tail added to hnRNA at its 3’-end?
What is the primary role of the tail added to hnRNA at its 3’-end?
- Encodes stop codons
- Initiation of protein synthesis
- Prevents degradation of RNA (correct)
- Acts as a spacer in gene sequences
How do exons differ from introns in gene sequences?
How do exons differ from introns in gene sequences?
What kind of sequences are found in telomeres that serve as aging markers?
What kind of sequences are found in telomeres that serve as aging markers?
During hnRNA synthesis, what is the role of the GTP cap added to the 5’-end?
During hnRNA synthesis, what is the role of the GTP cap added to the 5’-end?
What type of proteins aid in looping out the introns during mRNA formation from hnRNA?
What type of proteins aid in looping out the introns during mRNA formation from hnRNA?
In the context of protein synthesis, what is the role of N,N’-dimethyl guanine in tRNA?
In the context of protein synthesis, what is the role of N,N’-dimethyl guanine in tRNA?
What is the specific function of the acceptor stem in tRNA?
What is the specific function of the acceptor stem in tRNA?
Which RNA type is directly involved in protein formation from mRNA?
Which RNA type is directly involved in protein formation from mRNA?
What is the primary function of the anticodon site on tRNA?
What is the primary function of the anticodon site on tRNA?
Which region of tRNA first binds to its corresponding amino acid before entering the ribosome for protein synthesis?
Which region of tRNA first binds to its corresponding amino acid before entering the ribosome for protein synthesis?
What is the role of p53, p63, and p73 in inhibiting cyclinD/CDK4 complex?
What is the role of p53, p63, and p73 in inhibiting cyclinD/CDK4 complex?
How does an defect in p53 affect the cell cycle?
How does an defect in p53 affect the cell cycle?
What is the significance of CDK4 in cell cycle progression?
What is the significance of CDK4 in cell cycle progression?
What is the primary function of heat shock proteins in an organism?
What is the primary function of heat shock proteins in an organism?
How do E2F and Rb proteins influence the cell cycle progression?
How do E2F and Rb proteins influence the cell cycle progression?
What is the number of genes and exons for Alpha-crystallin?
What is the number of genes and exons for Alpha-crystallin?
What is the role of RNA primase in DNA replication?
What is the role of RNA primase in DNA replication?
Which enzyme is responsible for completing the gaps between DNA Okazaki fragments?
Which enzyme is responsible for completing the gaps between DNA Okazaki fragments?
What is the function of Transfer RNA (tRNA) in protein synthesis?
What is the function of Transfer RNA (tRNA) in protein synthesis?
What is the primary function of Ribosomal RNA (rRNA) in protein synthesis?
What is the primary function of Ribosomal RNA (rRNA) in protein synthesis?
Which type of RNA represents the most common occurrence and what percentage of RNA does it make up?
Which type of RNA represents the most common occurrence and what percentage of RNA does it make up?
What is the primary role of telomeres in preserving chromosome integrity?
What is the primary role of telomeres in preserving chromosome integrity?
Which of the following is a characteristic of hnRNA?
Which of the following is a characteristic of hnRNA?
What is the function of the GTP cap added at the 3’-end of hnRNA before mRNA synthesis?
What is the function of the GTP cap added at the 3’-end of hnRNA before mRNA synthesis?
In gene sequences, what differentiates introns from exons?
In gene sequences, what differentiates introns from exons?
What type of sequences are highly repeated in mammalian telomeres?
What type of sequences are highly repeated in mammalian telomeres?
What is the role of the GTP cap added to hnRNA at the 5’-end?
What is the role of the GTP cap added to hnRNA at the 5’-end?
What is the significance of CDK4 in the context of protein synthesis?
What is the significance of CDK4 in the context of protein synthesis?
How do E2F and Rb proteins influence mRNA formation from hnRNA?
How do E2F and Rb proteins influence mRNA formation from hnRNA?
In the context of genetic code, what is the function of a stop codon?
In the context of genetic code, what is the function of a stop codon?
What type of proteins aid in telomere maintenance and serve as aging markers?
What type of proteins aid in telomere maintenance and serve as aging markers?
What is the specific function of regulatory proteins in hnRNA synthesis?
What is the specific function of regulatory proteins in hnRNA synthesis?
Where does RNA polymerase bind to initiate transcription?
Where does RNA polymerase bind to initiate transcription?
What does a stop code indicate in the genetic code?
What does a stop code indicate in the genetic code?
What are the diverse roles of noncoding regions in DNA?
What are the diverse roles of noncoding regions in DNA?
What kind of sequences are typically found in telomeres and serve as aging markers?
What kind of sequences are typically found in telomeres and serve as aging markers?
What is the catalytic activity responsible for peptide bond formation in the ribosome?
What is the catalytic activity responsible for peptide bond formation in the ribosome?
Which photoproduct is formed when adjacent pyrimidines bond due to UV exposure, distorting the DNA helix?
Which photoproduct is formed when adjacent pyrimidines bond due to UV exposure, distorting the DNA helix?
What is the primary role of telomeres in a cell's genetic material?
What is the primary role of telomeres in a cell's genetic material?
What is the primary function of regulatory proteins in hnRNA synthesis?
What is the primary function of regulatory proteins in hnRNA synthesis?
How does the turnover rate of proteins relate to mRNA molecules?
How does the turnover rate of proteins relate to mRNA molecules?
What is the primary function of telomeres?
What is the primary function of telomeres?
In hnRNA synthesis, what is the specific role of regulatory proteins?
In hnRNA synthesis, what is the specific role of regulatory proteins?
What is the significance of noncoding DNA regions in the genome?
What is the significance of noncoding DNA regions in the genome?
Which statement best describes the genetic code and its relation to stop codons?
Which statement best describes the genetic code and its relation to stop codons?
During transcription, what is the main role of RNA polymerase regarding binding to DNA?
During transcription, what is the main role of RNA polymerase regarding binding to DNA?
What is the main function of regulatory proteins in hnRNA synthesis?
What is the main function of regulatory proteins in hnRNA synthesis?
What is the role of RNA polymerase in gene expression?
What is the role of RNA polymerase in gene expression?
Which codon signals for the termination of protein synthesis?
Which codon signals for the termination of protein synthesis?
What are the main roles of noncoding DNA regions?
What are the main roles of noncoding DNA regions?
Which component is repeated at the ends of linear chromosomes to protect them from degradation?
Which component is repeated at the ends of linear chromosomes to protect them from degradation?
What is the significance of the TTAGGG sequence in telomeres?
What is the significance of the TTAGGG sequence in telomeres?
What is the effect of a mutation in the stop codon sequence?
What is the effect of a mutation in the stop codon sequence?
How do telomeres contribute to maintaining genome stability?
How do telomeres contribute to maintaining genome stability?
What is the primary function of noncoding regions in DNA?
What is the primary function of noncoding regions in DNA?
Which genetic element ensures accurate and complete chromosome replication during cell division?
Which genetic element ensures accurate and complete chromosome replication during cell division?
