proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macro molecules. the functions of proteins are very diverse because there are 20 different chemically distinct amino acids that form long chains, and the amino acids can be in any order. For example, proteins can function as enzymes or hormones.
Physical collisions and many other ways
They need to divide so they replace old or damaged cells
Student 1’s methods would be more accurate, because the student would control more factors. Only one variable at a time (either temperature or acidity) would be tested on each group of worms. On the other hand, Student 2 is testing both factors on all the worms, which could make the results unclear.