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.
Answer:
carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur
The correct response in this case would be denature, the enzyme will no longer be able to catalyze the reaction if there is an abnormally high change in the pH or the temperature.
C, energy
to regenerate ATP is the chemical energy stored in food like glucose
They reproduce sexually and asexually