What type of molecule makes up DNA?
B. Nucleic Acid
The second one because they can indicate infection and sickness
The first step in designing an experiment is the form a testable question.
Answer:
Bubbles are a sign that the yeast is alive, and that it is performing anaerobic respiration. You should notice that the mixtures with too little and too much sugar do not grow, bubble or foam properly. This is because the yeast needs the perfect amount in order to produce carbon dioxide.
Explanation:
