it simply means the cell's DNA is surrounded by a membrane. therefore the nucleus houses the cell's DNA and directs the synthesis of the proteins and ribosomes the cellular responsible for protein synthesis.
ANSWER:
D
EXPLANATION:
Both of their temperatures stay about the same throughout the experiment.
Answer: A transposable element is introduced into the regulatory region of the eye color gene and causes gene expression to be reduced, which results in white eyes with red spots
B - Enzymes act as catalysts because they lower the activation energy
