Karen is looking at a slide of an onion root tip under a microscope. She noticed that not all the cells look the same. Which of these best describes why all the cells are not identical?

A). The root is continuing to grow so the cells are going through mitosis
B). Some of the cells are cells and others are cells in the stem
C). There is a problem with the slide and it must be contaminated
D). The cells are turning into the actual

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!