Answer:
in contrast to normal cells,cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor /(cancer)
Options are not provided in the question. The complete question is as following:
The role that p53 protein plays in suppressing inappropriate progression through the cell cycle depends on all of the following EXCEPT _______.
A) p53 indirectly blocks G1 to S transition in the cell cycle
B) p53 activates transcription of WAF1
C) p53 stability increases in the presence of unrepaired DNA lesions
D) the ability of p53 to bind DNA lesions
Answer: D) the ability of p53 to bind DNA lesions
Explanation:
The activities of the protein p53 are dependent on its binding DNA. Specific post-translational modifications to the p53 protein are important for efficient sequence-specific binding and transcription activities. Non-sequence-specific DNA binding can involve a broad range of p53 proteins and predominate as more serious DNA damage or greater induction of p53 protein. P53 Protein is not strictly essential for sensing and repairing DNA damage. Alternatively, p53 protein can control an apoptosis checkpoint by competing with DNA repair proteins for non-sequence-specific binding in the DNA duplex to exposed single-stranded regions.
Hence, while suppresing inappropriate progression through the cell cycle protein p53 does not bind to DNA lesions.
Hence, the correct option is D.
Introduction of burmese pythons to a local ecosystem can have grave consequences, as has been proven in Florida. Burmese pythons are skilled predators, and they are not easily killed by other animals. If introduced to a climate they can thrive in, they will start hunting local animals. With little to no predators capable of killing them, they will flourish because of plentiful food supply, and they will continue to increase in number. They will decrease the level of animals directly below them in the food chain, which will then increase the number of animals and plants that had previously been eaten by the python's new food.
Basically, don't mess with food chains! :)
What is Mitosis?
"Mitosis is the cycle that eukaryotic cells go through in order to divide. During mitosis, a cell duplicates its DNA and divides into two genetically identical cells.
Mitosis and cytokinesis are part of the mitotic phase of the cell cycle, which make up about 20 percent of the entire lifecycle of a cell. The end result of mitosis is two completely separate cells with equal and similar cellular components. "
"Meiosis is the special cell division cycle for gamete cells, or sex cells. Chromosomes carry the genetic code for an organism, and come in pairs. In asexual reproduction, a cell will just divide itself to create two new cells. In sexual reproduction, the parent provides one set of each chromosome, or half the genetic code for an organism. When the two parent donor gametes – typically an egg and sperm – meet in fertilization, they provide the offspring with the full set of necessary chromosomes. For example, humans require 46 chromosomes, or 23 pairs. An egg or sperm will have just 23 chromosomes, or one half of the pair. This makes gamete cell division more complex than ordinary cell division. Within this cycle, the number of chromosomes is halved, typically going from a diploid (two sets) to haploid (one set) cell. It also includes a step where the chromosomes cross, allowing for more genetic diversity in reproduction."
- https://blog.udemy.com/meiosis-vs-mitosis/ = This info was from this site
Hopefully that helped, have a wonderful day :)
