* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download 9.1 CELLULAR GROWTH - Olathe School District
Survey
Document related concepts
Cell membrane wikipedia , lookup
Cell nucleus wikipedia , lookup
Tissue engineering wikipedia , lookup
Endomembrane system wikipedia , lookup
Extracellular matrix wikipedia , lookup
Cell encapsulation wikipedia , lookup
Biochemical switches in the cell cycle wikipedia , lookup
Programmed cell death wikipedia , lookup
Cellular differentiation wikipedia , lookup
Cell culture wikipedia , lookup
Organ-on-a-chip wikipedia , lookup
Cytokinesis wikipedia , lookup
Transcript
9.1 CELLULAR GROWTH WHAT YOU WILL LEARN -Why cells are small -The stages of the cell cycle -The stages of interphase READING Q’s EXPLAIN -Show the equations used to calculate surface area & volume for a cell that is 2 micrometers in diameter. SURFACE AREA: L X W X 6 sides 2 x 2 x 6sides = 24 um2 VOLUME: L X W X H 2 x 2 x 2 = 8 um3 READING Q’s EXPLAIN -What happens to ratio of surface area to volume as cell grows? -IT GETS SMALLER READING Q’s STATE -Complete the table by writing the number of cells present at the end of each stage. ONE CELL TWO CELLS READING Q’s LABEL -Circle the stage of interphase during which DNA is copied. READING Q’s NAME -What is cell division in prokaryotes called? -BINARY FISSION -asexual reproduction - cell divides into 2 genetically identical cells GROUP WORK: APPLICATION NOTES -As a group complete the application notes using your knowledge from the reading CELL SIZE LIMITATIONS ANALYZE: movement of nutrients and wastes as cell size increases. gets too large If a cell_____________________________ nutrients wastes transport of _______________ & _______________ diffusion by_______________ slows down— making cells less efficient. divide Therefore, cells _______________ before they become large too_______________. CELL SIZE LIMITATIONS DESCRIBE: How surface area-to-volume ratio relates to cell size -As a cell grows larger, its volume __________ increases more area thus surface area-to-volume rapidly than its surface __________, ratio __________. decreases LIST: Two alternative futures for cells when they reach their size limitations. 1-_______________ stop growing 2-_______________ divide THE CELL CYCLE COMPLETE/DESCRIBE: cell cycle / main events in each stage -cytoplasm divides -2 daughter cells formed CYTOKINESIS -nucleus divides MITOSIS -cell prepares for mitosis division G2 G1 S -cell grows -normal function -cell copies DNA THE CELL CYCLE IDENTIFY: Four events that occur in a cell during interphase CELL GROWS 1-__________________________ CELL CARRIES OUT FUNCTIONS 2-__________________________ CELL DUPLICATES CHROMOSOMES 3-__________________________ CELL PREPARES FOR DIVISION 4-__________________________ THE CELL CYCLE SKETCH / LABEL: the structure of a chromosome Sister chromatid centromere CHROMOSOME -contain genetic info -passed generation to generation -found in cell’s nucleus -CHROMATIN-relaxed form of DNA during interphase THE CELL CYCLE ORGANIZE: Information about the chromosomes -holds genetic info: -copied / passed on contain DNA -most of life exist as chromatin - cell doesn’t survive w/o accurately copied DNA -before division appear as short stringy structures in nucleus-chromatin SUMMARIZE ANALYZE: How more sophisticated microscopes have allowed scientists to advance their knowledge of cells. -cells must stay small to function properly -cells use cell cycle to stay small -cells actively growing in interphase -when a growing cell reaches its max size, it keeps small by dividing into two smaller daughter cells MATCH B C A F E D