12 Questions
During which phase of the cell cycle does DNA replication occur?
S phase
What is the result of DNA replication during the S phase?
Conversion of diploid genome to tetraploid genome
What is the function of methylation of DNA?
To inhibit DNA replication
What is the characteristic of the G2 phase?
Enlargement of cytoplasm
What is the role of cyclins in the cell cycle?
To regulate the transition of one phase to another
What is the number of DNA polymerases involved in DNA synthesis?
500-1,000
What happens to cyclin D levels in late G1 phase?
They rise
What is the main problem in replicating linear DNAs in eukaryotic cells?
The lagging strand cannot be completely synthesized
What is the role of telomeres in eukaryotic chromosomes?
To prevent DNA loss during replication
What is the composition of telomerase?
Both protein and RNA
What is the function of the telomerase RNA sequence?
To serve as a template for telomere extension
What is the end result of telomere shortening in eukaryotic cells?
The cell dies due to loss of essential genes
This quiz covers the different phases of the cell cycle, including mitotic, G1, S, and G2 phases, and the process of DNA replication. Test your knowledge of the cell cycle and its importance in higher organisms.
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