Which of the following organelles undergoes cellular respiration to give cells the energy they need?
a. cytoplasm
b. nucleus
c. mitochondria
d. smooth er

2.) insulin is needed to your cells take in sugar from your blood. after you eat a candy bar, will your insulin gene be expressed or repressed? 3.) all cells have the same dna, and they all make the same proteins. true or false? the answers are 2.) expressed3.) false