Cross-contamination is likely to occur in which of the following situations?
a. george cleans and sanitizes his cutting board and knife after slicing raw meat and
before chopping vegetables
b. rachel pauses while preparing salads to adjust her hair under her hairnet, and then
immediately returns to her task
c. isaac uses an ice scoop to fill several glasses with ice, then places the scoop back in its
holder
d. nora washes her hands and puts on a new pair of single-use gloves before making
sandwiches

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

the cell cycle is the final answer! : )