This decrease of pressure in the thoracic cavity relative to the environment makes the cavity pressure less than the atmospheric pressure. This pressure gradient between the atmosphere and the thoracic cavity allows air to rush into the lungs; inhalation occurs. The resulting increase in volume is largely attributed to an increase in alveolar space because the bronchioles and bronchi are stiff structures that do not change in size.
Answer:
The inactivation of one protein that slow down the cell cycle could lead to cancer. (option b).
Explanation:
The cell cycle is the process a cell undergoes when it divides during its life. This process includes a control mechanism to prevent normal cells from replicating more than normal, called cell cycle regulation.
In oncogenesis - the formation of malignant tumours - many factors induce the abnormal growth of a tissue by the abnormal multiplication of the cells that form it, leading to cancer. One of these factors may be a mutation in the DNA that prevents the production of regulatory proteins.
The mutation that produces exaggerated cell growth -and which can eventually lead to cancer- can create defects in a specific regulatory protein that slow down the cell cycle, so that exaggerated and uncontrolled cell replication occurs.
Once a tumor tissue has formed, successive mutations will lead to a lack of cell differentiation, the property of forming blood vessels, the ability to invade tissue and lose its apoptosis mechanism, that characterizes cancer cells.
Learn more:
Cyclines in cell cycle regulation brainly.com/question/6821354
Chromosomes are made up of DNA and molecules are packed around proteins called Histones
What type of mutation has occurred in figure 12-3?
Answer= substitution
Answer:
The correct answer is - option C.
Explanation:
Glutamate dehydrogenase is also known as GDH which present in most of the microorganisms or the mitochondria of eukaryotic organisms. It is the only enzyme that can use both NAD+ and NADP+.
Glutamate dehydrogenase is inhibited by the GTP or ATP. One of the main causes of the catabolism amino acid is metabolites for gluconeogenesis. If the gluconeogenesis is likely to be active due to the result of when glutamate dehydrogenase is active.
Thus, the correct answer is - option C.
