Worksheet+-+Cells

CELLS References: Heinemann Science Links VELS Edition Chapter 7 (pp 186 - 207. You will need to check the web and other texts to complete all these questions fully. Try [|www.life.uiuc.edu/plantbio/cell/] or [|www.biology.arizona.edu/cell_biol/cell_biol.html]

1. What are cells? 2. Why are cells considered living? 3. Cells have special jobs. This is called cell specialization. Describe the structure (how it is made) and function (what it does) of five different types of cells in human bodies.

4. Cells join together to make tissues. Describe the structure and function of one human tissue. 5. Tissues join together to make organs. Describe the structure and function of one human organ.

6. Organs join together to form body systems. Name all the human body systems (you should have at least seven). 7. Cells are made of many different smaller parts called cell organelles. Copy and complete the table.
 * Organelle || Function ||
 * Cell wall ||  ||
 * Cell membrane ||  ||
 * Cytoplasm ||  ||
 * Chloroplasts ||  ||
 * Mitochondria ||  ||
 * Nucleus ||  ||
 * Vacuoles ||  ||

8. Plant and animal cells have three obvious differences. What are those differences and why do they occur?