Substitution causes sickle-cell anemia.
I believe that having a standard taxonomic system benefits the scientific community by allowing scientists from all over the world to have a common understanding in the classification of organisms. Taxonomy is the practice and science of classification of organisms into groups called taxas. The system provides correct phylogeny and identification of organisms to the scientific community.
Answer: multicellular? try that i'm not 100% sure
Explanation:
Biological cell membranes are selectively permeable, which means that the ease and rate of small molecules passing through membranes vary widely. The plasma membrane regulates exchange of nutrients, oxygen, inorganic ions, waste products, and water. The cellular membrane’s molecular organization controls permeability.
This is the enzyme-substrate complex. It's the enzyme and substrate that are bind together if they are complimentary.