What is a called when organisms that cannot make their own energy-rich molecules?

What are the types of mutations, and how does each alter the encoded protein? college level answer

Why were the results whit just water so much different than the trials with the detergent ?

4. multiple crosses were made between true-breeding lines of black and yellow labrador retrievers. all the f1 progeny were black. when these progeny were intercrossed, they produced an f2 consisting of 91 black, 39 yellow and 30 chocolate. a. propose an explanation for the inheritance of coat color in labradors. b. propose a biochemical pathway for coat color determination and indicate how the relevant genes control coat coloration.