| A | B |
|---|
| cell wall | I am made of cellulose. I protect plant cells and give them their rigid structure and rectangular shape. Who am I? |
| cell membrane | I am very flexible and found in all types of cells. I control what enters and leave cells. Some call me selectively permeable. Who am I? |
| cytoplasm | I am made of mostly water with dissolved substances. Organelles are suspended in me. Who am I? |
| nucleus | I am often called the cotrol center of the cell because I contain DNA, a molecule that controls all cellular activities. Who am I? |
| nuclear membrane | I am covered with tiny pores and I control what enters and leaves the nucleus. Who am I? |
| nucleolus | I am a small dark area inside the nucleus. I produce ribosomes. Who am I? |
| chromatin | I look like grains in the nucleus but I am really just unwound DNA. Who am I? |
| rough endoplasmic reticulum | I surround the nucleus. My surface is covered with ribosomes. I am made up of many channels that are used to transport proteins. Who am I? |
| smooth endoplasmic reticulum | I am found near the nucleus. I am responsible for making lipids for the lipid bilayer found in membranes. I also detoxify chemicals like drugs, alcohol, and other toxins. Who am I? |
| ribosomes (free and attached) | I can be found attached to the endoplasmic reticulum or freely floating in the cytoplasm. I am the location where proteins are made. Who am I? |
| Golgi apparatus | I am made of many stacked membranes. I take proteins and modify them and then send them out to where they are needed by packaging them into small vesicles (sacs). Who am I? |
| lysosomes | I am small vesicles (sacs) filled with digestive enzymes. I am responsible for breaking down large food molecules into smaller food molecules and for digesting old cell parts. Who am I? |
| mitochondria | I am where cellular respiration takes place. I break down sugar molecules and make energy (ATP) for the cell. Who am I? |
| chloroplasts | I am where photosynthesis takes place so you will only find me in plant cells and some algae. I convert the energy from light into sugar used in the mitochondria to make cellular energy (ATP). Who am I? |
| centrioles | I am found in animal cells. I help chromosomes to separate during cell division. Who am I? |
| vacuole | I am a storage vesicle (sac) found in all eukaryotic cells. I store water, nutrients, and chemicals. I am very large in plant cells and help maintain turgor pressure which helps maintain a plant cell's rigidity. Who am I? |
