If a p53 gene is defective it may cause cell cycle to stop functioning normally. Without this cell cycle check, cells will divide continuosly creating many chromosomal damage.
Answer:
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Explanation:
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A mineral makes up a rock
<h3><u>Answer;</u></h3>
Label A; Mitochondria.
Label B; Nucleus.
Label C; Golgi apparatus.
Label D; Rough endoplasmic reticulum
<h3><u>Explanation;</u></h3>
- All the above are various organelles in a eukaryotic cells each carrying different cellular activity to enhance the functioning of a cell.
Label A; Mitochondria.
- <u>Mitochondria</u> is the powerhouse of the cell which converts glucose to energy rich molecules of ATP, through the process of cellular respiration.
Label B; Nucleus.
- <u>Nucleus</u> contains the genetic material or DNA, RNA , nucleolus, chromatin fibres and proteins. It contains the chromosomes which control the hereditary characteristics.It also regulates all the activities of the cell.
Label C; Golgi apparatus.
- <u>Golgi apparatus;</u> they are also called Golgi bodies. They function in modifying, sorting and packaging of proteins for secretion. They are also involved in the transport of lipids around the cell, and the creation of lysosomes.
Label D; Rough endoplasmic reticulum
- <u>The rough endoplasmic reticulum</u> provides surface for protein synthesis. It is also used to transport cellular contents from one cell to another.
- The risbosomes attached on the rough endoplasmic reticulum are resposible for the protein synthesis through the process of translation.
Answer:
The correct answer is option- b. homeostatic negative feedback mechanism, keeping a system near a set point.
Explanation:
Homeostasis is a resistance system of the body that balances the body according to the change to maintain equilibrium in the system or body. It can take place with negative or positive feedback.
The negative feedback mechanism is the action that opposes to cue or stimulus presented by the system. For example, GIP is the hormones that help in the increase in insulin release and suppress the release of glucagon. It also prevents the blood sugar hike by slow emptying of gastric.
Thus, the correct answer is - B. homeostatic negative feedback mechanism, keeping a system near a set point.
