How do cells get energy to perform their necessary functions? a. cells get energy only by taking in oxygen from the atmosphere. b. cells get energy by dissolving waste products of the body. c. cells get energy by moving water from one organelle to another. d. cells get energy by taking in nutrients from food.

Been sitting here trying to take this test and don't know this answer! place the events of a feedback mechanism associated with body temperature in the correct order. ·nerve cells send message from skin to the brain ·body returned to normal temperature around 98.6 degrees f ·temperatures regulation center in the brain sends out signals ·body temperature exceeds 98.6 degrees f ·sweat glands throughout the body activate to cool off skin surface it is a 1 through 5 question in biology!