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Unit 7 Biology

CELL DIVISION

QuestionAnswer
Three problems that growth causes for cells are.... 1. DNA OVERLOAD 2. OBTAINING ENOUGH FOOD 3. EXPELLING WASTE
Sexual Reproduction 1. REQUIRES MATE 2. PRODUCES OFFSPRING WITH CHARACTERISTICS FROM EACH PARENT
Sex cells are... HINT (n) HAPLOID
Somatic (body) cells are... HINT (2n) DIPLOID
The human body contains how many chromosomes 46
A form of reproduction that produces genetically identical offspring from a single parent ASEXUAL
Body cells can also be called SOMATIC CELLS
Sex cells (SPERM AND EGG CELLS) are called GAMETES
What are the 4 phases of MITOSIS? (PMAT) 1. PROPHASE 2. METAPHASE 3. ANAPHASE 4. TELOPHASE
What is the preparation process before MITOSIS? INTERPHASE
What happens during G1? GROWTH, DOUBLE ORGANELLES
What happens during S? DNA REPLICATION
What happens during G2? SPECIAL STRUCTURES ARE MADE
How many daughter cells are made during Mitosis? 2 IDENTICAL DAUGHTER CELLS
How many cells are made at the end of Meiosis 2 4
What structure is required for plant cells to complete cytokinesis? CELL PLATE
What is composed of condensed chromatin fibers? CHROMOSOME
What are the Sister Chromatids connected by? CENTROMERE
Where does the division of the Nucleus take place? MITOSIS
Where does the division of the Cytoplasm take place? CYTOKINESIS
What process does a cell undergo if it is no longer functioning properly or has been damaged APOPTOSIS
How many rounds of cell division does meiosis contain? 2
IN eukaryotic cells, the timing of the cell cycle is regulated by? PROTEIN REGULATORS
What happens during crossing over? CHROMOSOMES EXCHANGE GENETIC INFORMATION
What happens during PROPHASE? 5 things 1.Nucleolus disappears 2. Centrioles move to opposite ends of cell 3. Chromatin condenses into chromosomes 4. Nuclear membrane breaks down 5. Spindle fibers form
What happens during METAPHASE? 2 things 1. Chromosomes line up in the middle of the cell 2. Spindle fibers connect the chromosomes to the centrosomes through the centromere
What happens during ANAPHASE? 2 things 1. Spindle fibers pull the chromosomes apart and drag them to opposite ends of the cell
What happens during TELOPHASE? 4 things 1. Chromosomes decondense into chromatin 2. Nuclear membrane reforms 3. Spindle fibers break down 4. Nucleolus Reappears
Created by: jlelliott
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