Living things are made of types of molecules, known as macromolecules.
There are four major classes of biological macromolecules:
carbohydrates
lipids
proteins
nucleic acids
Each of these types of macromolecules performs a wide array of important functions within the cell; a cell cannot perform its role within the body without many different types of these crucial molecules. In combination, these biological macromolecules make up the majority of a cell’s dry mass. (Water molecules make up the majority of a cell’s total mass.) All the molecules both inside and outside of cells are situated in a water-based (i.e., aqueous) environment, and all the reactions of biological systems are occurring in that same environment.
Answer: D, all are processes that shape Earth's features. I don't know if this was a choice answer but, hope this helps. :)
Explanation:
Any change in allele frequencies in a gene pool is a mutation
The nutrients that coats your nerves is something called myelin. Those like vitamin B and D can help out myelin sheath.
Answer:
d. furcula
Explanation:
Furcula
Furcula is a synapomorphy linking dinosaurs and birds .
The furcula is the structure formed by midline fusion of clavicles and this very element is unique in the theropods as well . And is the most crucial for understanding the link between birds and the theropods .
The first suggestion was by Huxley in 1868 , and in 1870 , the key component of the debate is the presence of Frucula .
