Answer:
c.All are halogens, so they are not very chemically active,
A or C
Just choose any of those!
No, because the immune system is already battling with the virus or disease
That's a component of a phospholipid, which is a lipid.
Answer:
the fundamental unit of heredity
Explanation:
DNA is a double stranded helix structure. Each strand is made up of a string of nucleotides.
A gene is a region of DNA, usually tens of thousands of nucleotides long. At the simplest level, one gene encodes for one trait. Therefore, the gene can be described as the fundamental unit of heredity.
Genes work by coding for specific proteins, which carry out essentially all the functions in the cell.
