Transgenic models can be generated using crispr/cas9 to introduce cancer-related mutations into cells within an organism. which of the following approaches can produce a transgenic model? (mark all that apply)
a. patient derived xenografts (pdfs)b. viral deliveryc. lipid nanoparticlesd. knockin a wildtype genetic locuse. direct nucleic acid (plasmid) injection

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.