Hydrogen bonds allow for cohesion and adhesion. Think water properties
Answer:
francium
Explanation:
The most expensive natural element is francium, but it decays so quickly it can't be collected to be sold.
<span>The correct answer:
copper is important in the synthesis of collagen.</span>
Copper activates an enzyme called lysyl oxidase that's required for collagen maturation.Lysyl oxidase catalyzes the formation of aldehydes from lysine residues in collagen and this results in cross-linking collagen (stabilization of collagen fibrils).
Answer: B. Temperature of 35 degrees celsius
Explanation: It is highest at the point between 30 and 40, which is where it's activity is the strongest.
SI comes from French for "System of International Units: Système International d'Unités"
<em />This is the correct option: this is a system that sets the standards for international measurements, such as seconds, meters, kilograms, and kelvins (the international temeperature measure!)
