Mitosis
Nucleus-‐___________________________ the cell. Nucleolus-‐ Makes _______________________________ and maybe more than _______ in the nucleus. Chromosomes-‐ Determines what ________________________ you will have and passes information from ____________________ to ___________________________ Cell Membrane-‐ Gives the cell ______________________ and controls what moves ___________ and _________________ of the cell. Cytoplasm-‐ ___________________________ material where ___________________________ are found. Vacuole-‐ __________________________filled and may store ______________________, ___________________________, _______________________ or _______________________ Mitochondria-‐ Produce ____________________ when food is broken down. Known as the ______________________________ of the cell. Ribosomes-‐ Where _____________________ are made. There may be ___________________ in a cell. Centrioles-‐ Found only in ___________________________ cells and are used in cell ________________________________.
What is mitosis? What is the purpose of mitosis? Why do cells divide? __________________________ __________________________ ___________________________ Prokaryotic Cell Division Bacteria produce by ______________________. This is simple because there are no ____________________________________. It begins with _________replication and the cell __________________ and will result in two identical _____________________. Eukaryotic Cell Division Mitosis
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• Meiosis
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Mitosis !
What is mitosis? What is the purpose of mitosis? Fill in the cell cycle
Describe each part of the cell cycle: G1-‐ S-‐ G2-‐ M-‐ Fill in the cell cycle
DNA and Cell Division
• During cell division, genetic material is __________________
• DNA is divided into long chains called ____________________
• Chromosomes are wrapped around proteins called _______________
• ___________________:the unit wrapped around histones. Two copies of each chromosomes are called sister chromatids
Chromosome Structure
• Normally the chromosomes are all spread out and unidentifiable. This is called __________________
• The two chromosomes are called sister _____________________
• The chromatids are held together at the ____________________. The Cell Cycle
• The length of time a cell takes in the cycle depends on the type of
cell. Usually the more specialized, the less likely they are to
___________________
• Red blood cells are replicated at a rate of _______million/sec
• Nerve cells do not usually _________________________ and remain in the
G0 stage until they ________________.
Chromosome number is maintained because the DNA is _____________________ and then divides. The Spindle Apparatus
• Consists of ______ sets of microtubles
• Move the _____________________ during mitosis.
• In both plants and animals the spindle fibers originate from
_____________________________. In animal cells the centrosomes are
______________________________.
Mitosis is divided into _______ phases: ___________________ ______________________ ________________________ ______________________ Describe Interphase-‐ Is Interphase part of mitosis? Nuclear envelope visible-‐YES or NO Chromosomes visible-‐ YES or NO Nucleolus visible-‐ YES or NO
Prophase Chromosomes ________________ Centrioles move to the __________________ of the cell Spindle apparatus is ___________________ Nuclear envelope ______________________ Centrioles and centrosomes are the same Metaphase Chromatids will ______________ up on the equator ________________________ connect to centromeres
Anaphase _________________________ pull the sister chromatids Chromosomes begin to move _______________________ Telophase Spindle apparatus _____________________ Nuclear envelope _____________________ Chromosomes ______________________ ________________________reappears
Cytokinesis
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• Animal cell with cleavage furrow Plant cell with cell plate One parent à ________________________________________________
Chromosome number remains the _________________________ from one generation to the next, hopefully.
Plant cell Animal Cell
Centrioles
Cytokinesis
Control of the cell cycle
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2.
3. What is the role of tumor suppressor genes and what happens if they are mutated?