What type of receptor is described in the following paragraph? An electrical signal may be triggered by the diffusion of ions. This signal moves down the receiving cell. The neurotransmitter molecules that are released between two nerve cells bind to which of the following channels?

Intracellular receptor
Receptor tyrosine kinase
G protein-coupled receptor
Ligand-gated ion channel

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.

Diabetes is often suspected when glucose shows up in urine tests. use the model to explain how glucose could be present in urine. why do you think this symptom is especially concerning for young people?

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis