The conservation of energy applies to all fields of science. Which one of the following scenarios identifies an open system as it would be described in terms of the Law of Conservation of Energy? Group of answer choices

a change in potential energy to kinetic energy during a roller coaster ride

the flow of energy from the sun to the Earth

a pan of boiling water being heated on a stove

the flow of electric current in a working electric circuit

Asingle-molecule microscopy experiment is performed on a slide containing 1000 molecules each of green, red, cyan, and yellow fluorescent proteins (gfp, rfp, cfp, and yfp, respectively). the experiment measures the number of antibodies bound to each type of protein, finding that 900 molecules of gfp, 10 of rfp, 1 of cfp, and 3 of yfp are bound at 1 nm concentration of antibody. a. what is the specificity of the antibody for gfp? b. what is the kd of the gfp–antibody interaction?