Answer is D, enzymes help speed up the reaction rate and help with metabolic process in the human body
Answer:
D
It helps the reader to understand which layers of the atmosphere are most important. Don't cheat
Antarctic fish species requires an adaptation to cold environment. Living at cold temperature environment would demand certain biological responses such as cutaneous respiration, enlarged blood vessels, and producing greater amounts of fat. Most of these fat are composed of higher phospolipid levels which are primarily due to phosphatidylethanolamine. This phospolipid is responsible for destabilizing cell membranes and make it more fluid thereby allowing unrestricted blood flow. The fatty acid composition of the membrane lipid is important for membrane fluidity, this is mainly attributed to unsaturated fatty acids which are responsible for decreasing the order of membrane lipids thereby decreasing viscosity. At extremely low temperatures, organisms with low concentration of unsaturated fatty acids would freeze cell membranes. That's why antarctic fishes have higher levels of unsaturated fatty acids.
<span>Ubiquitin is a protein found in eukaryotic cells that play an important role in the regulation of proteins. <span>It labels unwanted proteins (poorly folded proteins, viral proteins) to be degraded by the proteasome in to shorter fragments. Malfunction of this protein will cause degradation of this proteins to fast or, the opposite, will not label them as unwanted. </span></span>
Id give a guess of B Since global warming melts the ice caps which means flooding in the contenents, therefore erosion and weathering from the water and wind systems
