A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have? (3 points) 13
5
9
4

Which organelle releases chemicals that break down large food particles into smaller ones?

Consider the diagram below, which represents components of the biosphere. what do the two arrows in the diagram most likely represent? a. radiation b. photosynthesis c. cellular respiration d. energy conversions will give to anyone who answers quickly

The organelle pictured is found in cells of and is theorized to have once been an independent organism.