Answer:
The correct option is <u>RNA's ability to self-catalyze</u>
Explanation:
A molecule of RNA has the capability to self replicate itself. This ability of an RNA molecule to synthesize more RNA molecules of its own kind is crucial in understanding why all organisms have the same genetic code.
Experiments were performed in labs where RNA molecules were synthesized in an in-vitro lab and their abilities to self- replicate and produce mole molecules of their kind were tested and verified.
It's a combination of alleles that determines the number of phenotypes for a given trait.
Although there are mesophile archaea (live in mild conditions), most of the archaea live in extreme conditions (e<span>xtremophiles). These extreme conditions may be related to high salt concentrations (halophiles), high temperatures (thermophiles), very alkaline conditions (alkaliphiles), or very acidic conditions (acidophiles).
In order to regulate homeostasis:
Halophiles </span><span>uses aerobic respiration in waters that can go up to 25%NaCl concentration.
Thermophiles have </span>heat shock proteins whose purpose is to refold denatured proteins to their functional conformation. These heat shock proteins also restore damaged proteins. There are several other mechanisms aiming to protect DNA. For example, some archaea have a protein that stabilises the DNA double-helix conformity raising its DNA melting point by 104ºF. Also, the cell membrane structure is heat-resistant - instead of simple phospholipids, their membranes are made of di-bi-phytanyl diether lipids.
Acidophiles can use carbon dioxide for as a carbon source. They can also, for example, in environments with oxygen process organic molecules by using TCA cycle reversely in order to convert sulfur and oxygen into sulfuric acid.
As the left ventricle contracts, oxygenated blood leaves the heart through the aortic valve, into the aorta. The blood to lower limb flows through descending aorta, which continues down to Left Common Femoral Artery, which continues down to Left Superficial Femoral Artery, which continues down to Left Popliteal Artery. The Left Popliteal Artery gives 2 divisions.
1. Left Tibioperoneal Artery (which continues down to the Left Posterior Tibial Artery which supplies back of the foot.)
2. Left Anterior Tibial Artery (which continues down to Left Dorsalis Pedis Artery which continues down to <em>Left First Dorsal Metatarsal Artery</em> which supplies the big toe/first digit of foot.)
