Look at the model below representing a signal transduction in a cell: (3 points) Which of the following is not true regarding this model of transduction?

A. Bonded signal molecules activate the cell permanently.

B. If the signal molecule isn't bonded to the surface protein, the ions cannot enter the cell

C. Internal ions will stimulate some type of cellular response.

D. Signal transductions are a protection mechanism that helps increase cellular efficiency.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

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?

What happens when water’s salinity increases? mass decreases. freezing point decreases. buoyancy of objects decreases. the amount of dissolved minerals decreases.