Telomerase activity is crucial for maintaining the length of telomeres. Which type of cells would you expect to have the HIGHEST telomerase activity?
Differentiated somatic cells
Senescent cells
Germ cells
Cells undergoing apoptosis
Related Questions
In which direction does DNA polymerase synthesize the new DNA strand?
3' to 5'
5' to 3'
Both 3' to 5' and 5' to 3'
Randomly
During DNA replication, topoisomerases play a crucial role. Which statement BEST describes the function of topoisomerases?
They synthesize RNA primers for DNA polymerase.
They unwind the DNA double helix at the replication fork.
They relieve torsional stress in the DNA helix ahead of the replication fork.
They join Okazaki fragments on the lagging strand.
Meselson and Stahl experiment on semi-conservative replication demonstrates
50% radioactive, 50% non-radioactive
50% non-radioactive
50% radioactive
None of the above
What is the role of DNA ligase in DNA replication?
Unwinds DNA
Synthesizes RNA primers
Joins Okazaki fragments
Adds nucleotides to the growing DNA strand
DNA strand which is formed continuously in 5’ 3’ direction is called
Lagging strand
Leading strand
Template strand
Stranded strand
Imagine a prokaryotic organism with a mutated DNA polymerase III that lacks 3' to 5' exonuclease activity. What would be the MOST LIKELY consequence of this mutation?
Slower replication fork movement
Inability to initiate DNA replication
A higher rate of mutations in the replicated DNA
Increased formation of Okazaki fragments
If DNA replication were conservative, what density distribution would be observed after two generations in N medium, following growth in N medium?
One intermediate band
Two distinct bands: one heavy and one light
One light band
A mixture of heavy, intermediate, and light bands
Which of the following models of DNA replication did Taylor's experiment with Vicia faba support?
Conservative
Dispersive
Semi-conservative
Non-reciprocal
DNA replication includes
Unwinding the double helix, synthesizing new DNA strands, and joining Okazaki fragments
Transcribing DNA into RNA, translating RNA into protein, and folding the protein
Breaking down glucose, producing ATP, and releasing carbon dioxide
Packaging DNA into chromosomes, separating chromosomes during cell division, and distributing chromosomes to daughter cells
Eukaryotic DNA replication is a complex process involving multiple proteins. Which of the following is NOT a function of Replication Protein A (RPA)?
Stabilizing single-stranded DNA
Preventing reannealing of separated DNA strands
Facilitating the binding of other replication proteins
Catalyzing the formation of phosphodiester bonds
