Answer:
the cell walls present in prokaryotes and eukaryotes r thick and give them shape
A vaccine is a medical material that mimics the pathogen, but in a harmless way. When our body's immune fights it off, it remembers how to fight the real pathogen when it enters our body. So, it protects us from diseases.
The answer is D. Since mitchondra is the energy source for the cell, it provides energy. Be sure to reread the lesson. Hope this helped!