1. D.
2. C Saliva and enzymes from the pancreas help break down food.
3. C ---- I think it's hydrochloric acid, HCl. HCl is very low in pH (acidic) to digest foods
the turnips have a model called Turnip's model that's why the turnips have been selectivity breed from field mustard.
Answer:
Gel Electrophoresis is a way to sort and measure the DNA strands. Scientists use the technique whenever they need to sort DNA strands according to lengths, this is because it helps them determine patterns, banding patterns create a unique fingerprint for a certain individual. During the process, the shorter strands move faster because they have less mass compared to the longer strand. Therefore, the short strands end up farther away from the starting point than the longer strands, which is how the difference in lengths sort themselves out.
I believe the answer is receptor sites, but correct me if I'm wrong.
Hope this helps!