<span>Microtubules form from dimers of Alpha and Beta subunits that polymerize into a hollow tube. Alpha and beta subunits refer to tubulin. There are things that can stop this from happening, and when one of these events occurs, de-polymerization is called "catastrophe".</span>
Answer:
<u>A</u> One of the key elements in creating a green economy is the construction of <u>green buildings</u>.
Explanation:
Any economy relies on businesses and buildings, so a green economy is going to need green buildings to support a green economy as well.
Carbs are mainly used for quick energy (if not used are stored as fats)
Lipids are mainly used for protection (if not used are stored as fats and store the most energy)
Proteins are mainly used for hormone synthesis, making nucleic acids, cellular repair, and lots of other things
NUCLEIC ACIDS are mainly used for dna things
