Which detail in the section "Determining The Chain Reaction" BEST supports the conclusion that cutting into an onion changes the structure of chemicals in the onion? A The structure of any molecule shows the position of the different atoms that make it up. That structure also shows how the different atoms join together.

B He knew that LF must start off as a different molecule. That's because it only caused tearing of the eyes once the onion's skin was broken.

C Sometimes chemical reactions need a little help to get started, which is where enzymes come in. "Enzymes are amazing molecules. he explains.

D Later, in the early 2000s, scientists at a Japanese food company discovered a second important enzyme in onions​

Astudent from one of the research labs is having trouble preparing a slide for examination and photographing. the bacterial slide that he has brought to you was prepared using a commercially purchased stain. he has asked for your in determining what he is doing wrong so that he can change the lab protocols and continue on with his project. after examining the slide under oil immersion, you determine that no bacteria are present even though the student is able to show you the culture he used to make that slide that has visible growth in the liquid medium. which of the following statements does not explain the fact that there are no bacteria present on the student’s slide? by not allowing a glass slide to completely air dry before heat fixation, the flame will cause the surrounding water to boil and this will damage the bacterial cell. overheating during the fixation step boiled the water within the bacterial cells and resulted in the cells bursting. insufficient heating of the slide did not drive out the thin layer of water and this resulted in minimal bonding between the bacteria and the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide.