Answer:
T
Explanation:
If put under stress the body systems are all effected in one way or a other
Answer:
The exoskeleton helps support movement by working with the muscles.
Explanation:
The answer is B. a nucleus.
Prokaryotic cells do not have a nucleus. They have ribosomes, a cell membrane, a cell wall, and DNA, but lack a nucleus. Prokaryotes also don't have mitochondria or chloroplasts and generally lack organelles.