What does Na+ represent? Select all that apply. a neutral sodium atom a sodium ion that has lost an electron a positively charged sodium ion a sodium ion that has gained an electron a negatively charge sodium ion

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Agene editing technology called crispr-cas9 uses cellular machinery to change the cell's genetic material. how might this technology be useful in treating diseases like cancer?