Question

answer the questions below using the information from page 1. 1. what are the units that organisms are made up of? 2. name an organism that is made up of just a single cell. 3. it is believed prokaryotic cells evolved to form what type of cell? 4. what are general body cells called? 5. give one example of a specialized cell. 6. how can the structure of a specialized cell suit its function? 7. what is the meaning of the term organelle? 8. how often has every cell in your body been replaced?

Explanation:

1. Cells are the basic structural and functional units of organisms.
2. Amoeba is a single - celled organism.
3. Eukaryotic cells are believed to have evolved from prokaryotic cells through endosymbiosis and other processes.
4. General body cells are called somatic cells.
5. Red blood cells are specialized cells that carry oxygen.
6. Specialized cells have unique structures. For example, red blood cells are biconcave to increase surface area for gas exchange.
7. Organelles are specialized structures within a cell that perform specific functions, like the mitochondria which is the powerhouse of the cell.
8. The rate of cell replacement varies by cell type. For example, skin cells are replaced every few weeks, while some nerve cells are not replaced at all.

Answer:

1. Cells
2. Amoeba
3. Eukaryotic cells
4. Somatic cells
5. Red blood cells
6. Red blood cells are biconcave to increase surface area for gas exchange (example)
7. Specialized structures within a cell that perform specific functions
8. Varies by cell type (e.g., skin cells every few weeks, some nerve cells not at all)