2. is the period of growth and development for a cell. 3. During interphase, most cells go through three stages rapid growth and

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1 Chapter 5 Lesson 1- General Lesson Outline Directions: Use the words below to fill in the outline of the text from lesson one. If the word is used more than once, it is followed by the number of times it is used in parentheses. anaphase DNA multicellular cell cycle furrow organelles cell division G1 prophase cell plate G2 replication centromere interphase (2) reproduces chromatin metaphase S cytokinesis (2) mitosis sister chromatids daughter cells (2) mitotic telophase develop A. The Cell Cycle 1. Most cells in an organism go through a cycle of growth, development, and division called the. 2. Because of the cell cycle, organisms grow and, replace old or damaged cells, and produce new cells. B. Phases of the Cell Cycle 1. There are two main phases of the cell cycle interphase and the phase. 2. is the period of growth and development for a cell. 3. During interphase, most cells go through three stages rapid growth and of the organelles; replication of, the genetic information in a cell; and preparation for. 4. During the mitotic phase, a cell.

2 C. Length of a Cell Cycle 1. makes up most of the cell cycle. 2. During interphase, the DNA in the cell is called. D. Phases of Interphase 1. Interphase begins with a period of rapid growth the stage. 2. During the stage of interphase, the cell replicates its strands of chromatin. 3. are the two identical strands of DNA that make up the duplicated chromosome. 4. The sister chromatids are held together by a structure called the. 5. The final stage of interphase the stage is a period of growth and final preparation for mitosis. E. Organelle Replication 1. Before a cell divides, it makes copies of all its. 2. In, the nucleus and its contents divide. 3. In, the cytoplasm and its contents divide. 4. Two new result from mitosis and cytokinesis.

3 F. Phases of Mitosis 1. During, duplicated DNA condenses into chromosomes. 2. During, the chromosomes line up in the middle of the cell. 3. During, sister chromatids in each duplicated chromosome separate and are pulled in opposite directions by the spindle fibers. 4. During, chromosomes begin to uncoil, and two new identical nuclei form. G. Dividing the Cell s Components 1. After mitosis, usually divides a cell s cytoplasm, forming a new cell membrane around each daughter cell. 2. In animal cells, a(n) in the middle of the cells gets deeper until the cell membrane comes together to divide the cell. 3. In plant cells, a(n) grows outward toward a new cell wall until two new cells form. H. Results of Cell Division 1. The cell cycle results in two new that are genetically identical to each other and to the original cell, which no longer exists. 2. The cell cycle is important for reproduction in some organisms, growth in organisms, replacement of worn-out or damaged cells, and repair of damaged tissues.

4 Directions: On each line, write the term from the word bank that correctly replaces the underlined words in each sentence. NOTE: You may change a term to its plural form. cell cycle centromere cytokinesis daughter cells eukaryotic interphase mitosis sister chromatids 1. At the end of the cell cycle, the division of the cell s nucleus occurs. 2. Until the sister chromatids in each duplicated chromosome separate during mitosis, they are held together by a special structure. 3. A chromosome is made up of two identical coiled strands of DNA. 4. Following mitosis, the division of the cell s cytoplasm occurs. 5. Most cells go through a cyclical processes of growth, development, and division. 6. The cell cycle can be divided into two main phases a period of growth and development and the mitotic phase. 7. Mitosis and cytokinesis result in the formation of two identical new cells. 8. For some cells, identified as those with membrane-bound structures, the cell cycle might take as long as one year. Directions: On the line before each definition, write the letter of the term that matches it correctly. 9. the copied organelles are distributed between two cells before this occurs 10. duplicated chromosomes align along the middle of the cell 11. two new identical nuclei are formed 12. the cell begins to get longer 13. result of cell division in one-celled organisms A. metaphase B. telophase C. cell division D. prophase E. asexual reproduction F. anaphase 14. condenses the DNA strands in a chromosome

5 Chapter 5 Lesson 2- General Directions: On the line before each definition, write the letter of the term that matches it correctly. 1. a cell that can become many different cell types 2. a group of similar cells that work together to carry out a specific task or job 3. a group of different organs that work together to complete a series of tasks 4. the process by which cells becomes different types of cells 5. a group of organ systems that carry out all the jobs needed for their survival 6. a group of different tissues working together to perform a particular job A. cell differentiation B. stem cell C. tissue D. organ E. organ system F. organism Directions: Circle the term in parentheses that correctly completes each sentence. 7. Cells work together in a ( multicellular / unicellular ) organism. 8. A cell in a ( multicellular / unicellular ) organism must carry out all the activities that are necessary to survive. 9. Different types of cells in a multicellular organism have ( different / same ) chromosomes. 10. Multicellular organisms are ( eukaryotes / prokaryotes ). Directions: On the line before each number, Label the statements about unicellular organisms with a U and those about multicellular organisms with an M. 11. These organisms consist of cells. 12. Each cell must carry out all life processes. 13. Cells are specialized and perform specific functions. 14. These organisms can be prokaryotes or eukaryotes. 15. These organisms are always eukaryotes. 16. Cells in these organisms differentiate. 17. These organisms have stem cells. 18. These organisms have tissues.

6 Directions: Use the cut and paste Levels of Organization sheet to line up the items so that each level matches what it is, has a picture example, and has the correct description. Once you have them order, glue them into the correct boxes below. LEVEL WHAT IS IT? PICTURE DESCRIPTION

7 LEVELS OF ORGANIZATION CUT AND PASTE SHEET

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