Biology 1406 chapter 4 questions well answered graded A+

Biology 1406 chapter 4 questions well answered graded A+Cell Theory has 3 principles: - correct answer 1. Every organism is made up of one or more cells 2. The smallest organisms are single cells, and cells are the functional units of multi-cellular organisms 3. all cells arise from preexisting cells. Plasma Membrane - correct answer are extremely thin and made up of double layer of phospholipids and cholesterol molecules. Proteins embedded in the plasma membrane: - correct answer facilitate communication between the cell and its environment and allow passage of specific molecules or ions Cytoplasm - correct answer consists of all the fluid and structures that lie inside the plasma membrane, but outside the nucleus Two basic types of cells - correct answer Eukaryotic and Prokaryotic Eukaryotic Cells - correct answer Make up the bodies of animals, plants, protists, and fungi. Cell Walls - correct answer nonliving, relatively stiff outer-layer coating found in plants Cell Walls - correct answer function to protect the delicate plasma membrane and its contents Cytoskeleton - correct answer scaffolding of protein fibers within the cytoplasm Function of the Cytoskeleton - correct answer 1. Cell shape - determines the shape of the cell 2. Cell movement 3. Organelle movement - transportation of organelles from place to place within the cell 4. Cell division - guide chromosome movement and separation of dividing cell into two daughter cells.