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[Blank] is the formation of new individuals. |
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For single-celled organisms, cell division is a form of [blank] reproduction. |
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Most multicellular organisms reproduce by [blank] reproduction. |
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Cells carry genetic information in packages of DNA called [blank]. |
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Most [blank] have only one circular strand of DNA. |
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In eukaryotic cells, the genetic structure consists of DNA and a tightly wound protein, which together form a substance called [blank]. |
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The beadlike structures formed by DNA wrapped around [blank] molecules are called nucleosomes. |
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[Blank] make it possible the precise separation of DNA during cell division. |
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What is the name of the type of cell division that occurs in the prokaryotic cell cycle? |
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What happens during interphase? |
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Definition
Cell Growth (G1), DNA Replication (S), Preparing for Cell Division (G2) |
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Definition
http://faculty.cbu.ca/cglogowski/BIOL%20101%20IMAGES/CellCycle_L.jpg+ |
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In eukaryotic cells, what happens in the G1 phase that differs from the G2 phase? |
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Definition
G1 is cell growth, G2 cell gets ready for mitosis. |
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In eukaryotic cells, what are the two main stages of cell division? |
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During prophase, when cell chromosomes become visible, what are the duplicated strands of DNA called? What is the name for the area in which these duplicated strands are joined? |
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Definition
Sister Chromatids/Centromere |
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Term
What structures are spindle fibers attached to that help pull the paired chromosomes apart? |
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The chromosomes separate and begin to move to opposite sides of the cell. |
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The chromosomes become visible. The centrioles take up positions on opposite sides of the nucleus. |
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A nuclear envelope re-forms around each cluster of chromosomes. The nucleolus becomes visible in each daughter nucleus. |
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The chromosomes line up across the center of the cell. |
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Chromosomes going through mitosis. |
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Definition
http://3.bp.blogspot.com/-rWjZUOFAplA/TltmCAckHVI/AAAAAAAAAFg/sHV2JTkxxDY/s1600/Mitosis.gif |
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Definition
The division of the cytoplasm. |
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Cells tend to [continue] dividing when they come into contact with other cells. |
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Cell division [speeds up] when the healing process nears completion. |
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Proteins called [growth factors] regulate the timing of the cell cycle in eukaryotic cells. |
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If chromosomes have not attached to spindle fibers during metaphase, an [internal] regulatory protein will prevent the cell from entering anaphase. |
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Growth factors are external regulatory proteins that [slow down] the cell cycle. |
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Once apoptosis is triggered, a cell proceeds to [self-destruct] |
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Internal regulatory proteins |
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Definition
Respond to events occurring inside a cell |
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External regulatory proteins |
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Definition
Stimulate the growth and division of cells |
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Definition
A disorder in which body cells lose the ability to control growth, is one such example. |
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Term
What are the two basic types of tumors? Explain how they are different. |
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Definition
Benign - Non-cancerous Malignant - Cancerous |
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Why can cancer be life threatening? |
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Definition
They absorb nutrients needed by other cells, block nerve connections, and prevent the organs they invade from functioning properly. |
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What is the cause of cancer? |
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Definition
Defects in the genes that regulate cell growth and division. |
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How do radiation and chemotherapy affect cancer cells? |
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Definition
They target the cancer cells and destroy them. |
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Cancer cells do not respond to signals that regulate cell [blank]. |
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Cancer cells form a mass of cells called a [blank]. |
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Cancer cells may break loose and [blank] throughout the body. |
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Cancer cells form tumors in other tissues by [blank]. |
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