Asked by Fahad Alanazi on May 12, 2024
Verified
Which of the following serve to directly accelerate the cell cycle?
A) tumor-suppressor genes
B) carcinogens
C) repressors
D) oncogenes
E) p53 gene
Oncogenes
Genes that have the potential to cause cancer by driving cell growth and division at an abnormal pace, often resulting from a mutation of normal genes called proto-oncogenes.
Carcinogens
Substances or exposures that can lead to cancer.
p53 Gene
A tumor suppressor gene that plays a crucial role in controlling cell division and apoptosis, often mutated in cancer cells.
- Distinguish between the roles of oncogenes and tumor-suppressor genes.
Verified Answer
CC
Christian CarturanMay 12, 2024
Final Answer :
D
Explanation :
Oncogenes serve to directly accelerate the cell cycle by promoting cell division and proliferation. Tumor-suppressor genes, repressors, and the p53 gene, on the other hand, serve to inhibit or regulate the cell cycle. Carcinogens may indirectly accelerate the cell cycle by causing genetic mutations that affect cell cycle regulation, but they do not directly accelerate the cell cycle.
Learning Objectives
- Distinguish between the roles of oncogenes and tumor-suppressor genes.