the answer is A. excreted and potassium ions to be conserved
<span>A certain virus infects one in every 200 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 5% of the time if the person does not have the virus. (This 5% result is called a false positive.) Let A be the event "the person is infected" and B be the event "the person tests positive".
</span>
Allele frequencies in a population may change due to four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow. Mutations are the ultimate source of new alleles in a gene pool. Two of the most relevant mechanisms of evolutionary change are: Natural Selection and Genetic Drift.
Early changes in the brain during exposure to addictive drugs involves the insertion of AMPA receptors into neuron membranes located within the VTA. AMPA receptor is an ionotropic transmembrane receptor for glutamate that is responsible in mediating fast synaptic transmission in the central nervous system. They provide initial depolarization that ultimately results in NMDA receptor activation.
When necessary<span>, fats can be broken down into </span>molecules<span> similar to ... things in living systems, proteins are built in discrete and often simple </span>steps<span>. ... All </span>amino acids<span> share a base structure: a central carbon, called the alpha ... up to full charge-charge interactions of ionic bonds, or, as mentioned </span>before<span>, covalent bridges.
</span>