Science Section 3 and 4 flash cards

Set: Science Section 3 and 4

Familiarize		Learn		Test
Play Scatter			Play Space Race

	Term	Definition
	cancer	a disease in which cekks grow and divide uncontrollably, damagong parts of the body around them
	when does cancer begin	cancer beigns when mutation disrupts the normal cell cycle, causing the cells to divide in an uncontrolled way
	mutation	a change in a chromosome
	tumor	a mass of abnormal cells that divide and grow uncontrollably
	3 ways to treat cancer	surgery, radiation, and drugs
	reduces chances of cancer	avoid smoking, eating a helpful diet, and protect your skin
	cell cycle	the regular sequence of growth and divison cells undergo
	daughter cells	the two new cells produced at the end of the cell cycle
	three main stages of cell cycle	interphase, mitosis, and cytokinesis
	interphase	cell grows to full suze, makes copy of DNA, and prepares to divide
	replication	process by which a cell contains two identical sets of DNA
	mitosis	stage during which cells's nucleus divides into two new identical nuclei
	prophase	cromatin in nucleus condenses to form chromosomes
	chromatid	a rod of the chromosome
	metaphase	chromosomes line up across center of cell and attach to a spindle fiber
	anaphase	centromeres split and chromatids seperate; cell starts to stretch
	telophase	chromosomes begin to stretch and fade away; a nuclear envelope forms around chromosomes
	cytokinesis	final stage of cell cycle; cytoplasm divides; organelles distributed into each of the two new cells
	adenine	thymine
	guanine	cytosine

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