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Chapter 4 lesson 3/4
chapter 4 lesson 3/4 8 period
| Term | Definition |
|---|---|
| Cell cycle | The regular sequence of growth and division that cells undergo |
| Interphase | Stage of the cell cycle that takes place before cell division occurS |
| Replication | The process by which a cell makes a copy of the DNA and its nucleus |
| Mitosis | The stage of the cell cycle which the cells nucleus divides into two new nuclei and one copy of the DNA into each daughter |
| chromosomes | A double rod of condensed chromatin contains DNA that carry genetic information |
| cytokinesis | The final stage of the cell cycle in which the cell cytoplasm divides distributing the organelles into each of the two new cell |
| What takes place in the three stages of the cell cycle | The cell grows and makes a copy of its DNA, spindle fibers form and the nucleus breaks down then the chromosomes lineup across the center of the cell the centromeres split the chromosomes, begin to stretch out and lose their rod like appearanc,cell split |
| Draw and label a cell cycle | See notes |
| Explain DNA replication how it accounts for the way it copies itself | The cell grows mature size. It makes a copy of DNA and prepared to divide into two cells. Two cylindrical structures called centrioles are also copied |
| Selectively permeable | A property of cell membrane that allows some substances to pass throughout others cannot |
| PassIve transport | The movement of materials through a cell membrane without using energy |
| Diffusion | The process by which molecules move from an area of higher concentration to an area of lower concentration |
| osmosis | The diffusion of water molecules through a selectively permeable membrane |
| Active transport | The movement materials through cell membrane using cellular energy |
| How materials move in and out of cell | Passive and active transport |
| The different types of membrane transport and how they work | Passive transport is where it passesthrough without requiring any energy, an active transport is it requires a cells energy to move through materials across the cell |
| Explain the difference between fluctuated diffusion And diffusion | |
| The movement of materials through a cell membrane without using energy | Passive transport |