The correct answer to your question Andresgrajeda60 is choice D
Answer:
The correct answer is option B. The tertiary structure of the beta subunit changes, exposing a hydrophobic cleft which allows hemoglobin to form long chains in RBC.
Explanation:
As it is clearly mention as there is point mutation that leads to single nucleotide change which results in to valine instead of glutamate. Valine is hydrophobic in nature not like glutamate. Valine aggregate and makes a rigid structure of molecules.
Due to this rigid molecule of valine aggregates, RBCs form a crescent or sickle like shape due to the higher viscosity and low solubility of Mutated hemoglobin in deoxy condition. It leads to formation of polymer that blocks the vessels.
Thus, the correct answer is option B.
Biological conservation is important for ecosystem functioning. How ecosystems works is the reason behind all the commodities we enjoy. For example, due to dense forests, a lot of water is filtered trhough soil. This water replenishes underground streams, which ultimately allow us to filter that water. It's like forests are a giant and very effective mechanism to catch rain water. Besides, vegetation is pretty important for climate regulation in land, since it produces the oxygen we breath and gives shade from the sun. Any economical develpment could provide the benefits forests give. Noteworthy, forests are able to proliferate and endure, thanks a lot of interctions with microorganisms, invertebrates (like ants or bees, important pollinators). These are a few examples, why biological conservation, relies at the heart of our own population conservation.
Less tilling thanks to genetically modified herbicide-tolerant crops also means that farmers spend less time on their tractors, using less fuel and reducing carbon emissions. Conservation tillage enabled by genetically modified crops has reduced greenhouse gas emissions on farms globally and can help farmers adapt to and mitigate climate change. In fact, in 2014 5.2 billion pounds of atmospheric carbon dioxide emissions were reduced by conservation tillage and decreased fuel use made possible by genetically modified crops. That’s equal to removing nearly 10 million cars from roads for one year.
According to the USDA, adopting conservation tillage can save at least 3.5 gallons of fuel per acre for farmers who would spend less time on their tractors, reducing emissions. If all of the corn planted in the U.S. (non-genetically modified and genetically modified combined) in 2015 was grown with conservation tillage methods, nearly 308 million gallons of fuel would be saved, equivalent to preventing 6.9 billion pounds of carbon emissions.
this is y air is important
Glucose is the simple sugar that provides energy to organisms.
