Question

1. all cells have these four structures, but eukaryotic cells also have membrane - bound organelles. so, what is an organelle? (slide 1, cell structure (organelles) ppt) 6. what is the job of the cell membrane? (slide 9) 7. what is the job of the cytoskeleton in a cell? how is this like the skeletons in our bodies? (slide 12) 8. what is the structure of the cytoplasm? (slide 13) 9. what is the job of the nucleus in the cell? (slide 14) 10. where is the nucleolus found? (slide 15)

Explanation:

1. An organelle is a specialized subunit within a cell that has a specific function, often enclosed by a membrane in eukaryotic cells.
2. The cell - membrane controls the movement of substances in and out of the cell, provides structural support, and helps in cell - cell recognition.
3. The cytoskeleton in a cell provides structural support, helps in cell movement, and organizes cell components. It is like the human skeleton as it gives shape and support to the cell, similar to how the skeleton gives shape and support to the body.
4. The cytoplasm is a jelly - like substance that fills the cell and contains all organelles and cell parts. It is composed of water, salts, and proteins.
5. The nucleus is the control center of the cell. It contains the cell's genetic material (DNA) and is responsible for regulating cellular activities such as growth, metabolism, and reproduction.
6. The nucleolus is found within the nucleus. It is the site of ribosome synthesis.

Answer:

1. A specialized subunit within a cell with a specific function, often membrane - bound in eukaryotes.
2. Controls substance movement, provides structural support, and aids in cell - cell recognition.
3. Provides structural support, helps in cell movement, and organizes cell components; similar to human skeleton in giving shape and support.
4. A jelly - like substance composed of water, salts, and proteins that fills the cell and contains organelles and cell parts.
5. The control center of the cell, containing DNA and regulating cellular activities.
6. Within the nucleus.