The answers A. C. D. are all physical reactions
The answer is B. Digestion of food
When food is digested it is chemically broken down
Hope this help!
<span>Preservation of advantageous genetic mutations, I think.</span>
Cirrhosis of the liver is a disease that effects the function of the liver. the liver has a function to clean out and detoxify the body. If at that point the liver cannot clean out the toxins you either have dialysis to help clean out the toxins in the liver. it causes the kidneys not to function correctly and you may need a kidney transplant.
Alpha helices and Beta pleated sheets make up the secondary structure of protein.
<span>A single stranded nucleic acid that plays a role in protein synthesis is known as the messenger RNA or mRNA (messenger Ribonucleic Acid). The other two types of nuclei acids are transfer RNA or tRNA and ribosomal rNA or rRNA. These nucleic acids are involved in cellular division in cells, during which transcription and translation occurs.</span>