A student was studying a prepared slide of human cheek cells under a compound light microscope. The diagram represents what the student observed on the slide at a magnification of 100×. Identify the shaded structure shown in each cell in the diagram.

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

What is the difference between how ionic and covalent bonds form

Which of the following is a common response to cell signaling?