10.1 pre-read questions 1.name 2 limitations to cell growth. 2.how does dna limit cell growth? 3.why...
TRANSCRIPT
![Page 1: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/1.jpg)
10.1 Pre-Read Questions1.Name 2 limitations to cell growth.
2.How does DNA limit cell growth?
3.Why is the ratio of surface area to volume important?
4.Describe the process of cell division.
![Page 2: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/2.jpg)
Ch 10: Cell Growth and Division
10.1: Cell Growth
![Page 3: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/3.jpg)
Cells
Does not continue to grow bigger
Cells just continue to produce more cells
![Page 4: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/4.jpg)
Limits to Cell Growth 2 main reasons
1.Larger a cell becomes, the more demands the cell places on its DNA
![Page 5: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/5.jpg)
Limits to Cell Growth 2 main reasons
2. Cell has more trouble moving enough nutrients and wastes in and out of cell
![Page 6: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/6.jpg)
Reason #1 DNA “overload”
DNA = information that controls a cell’s function
if cells grow, DNA does not make extra copies
DNA would not be able to serve the needs of the cell
![Page 7: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/7.jpg)
Reason #2: Exchanging Materials
how fast materials leave or enter the cell depends on surface area
food and oxygen depend on cell volume
![Page 8: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/8.jpg)
Ratio of Surface Area to Volume
as surface area increases, its volume increases at a faster rate
![Page 9: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/9.jpg)
Ratio of Surface Area to Volume
Consequence = cells have a more difficult time to move needed materials in and waste products out
![Page 10: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/10.jpg)
Cell Division
how cells reproduce
one cell divides into 2 new cells daughter cells
![Page 11: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/11.jpg)
Cell Division
before cell division - cell copies DNA
Each daughter cell gets own copy of DNA
![Page 12: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/12.jpg)
10.2A
12 / 5 / 06
![Page 13: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/13.jpg)
2 Stages
1.Mitosis = division of the cell nucleus
2.Cytokinesis = division of the cytoplasm
![Page 14: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/14.jpg)
Mitosis
asexual source of new cells
![Page 15: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/15.jpg)
Chromosomes carries the genetic information
consists of DNA cells have specific number of chromosomes
![Page 16: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/16.jpg)
Chromosome not visible until cell division
replicated before cell division
chromosomes change form to chromatids
![Page 17: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/17.jpg)
Chromatids Separate from each other and go into daughter cells
attached at a centromere located near the middle of the chromatids
![Page 18: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/18.jpg)
Centromere
Chromatid
![Page 19: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/19.jpg)
Cell Cycle
cell reproduction forms two daughter cells
in between period = interphase
![Page 20: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/20.jpg)
Cell Cycle: 4 phases consists of 4 phases
M phase = mitosis and cytokinesis
S phase = chromosome replication (S = synthesis)
G1 and G2 (G = gap) -- growth and activity
![Page 21: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/21.jpg)
![Page 22: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/22.jpg)
Interphase
3 of the 4 phases occurG1 S phaseG2
![Page 23: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/23.jpg)
G1 Phase
cell growing
increase in size and synthesize new proteins and organelles
![Page 24: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/24.jpg)
S Phase
chromosome replication
proteins synthesized
![Page 25: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/25.jpg)
G2 Phase
DNA replication complete at beginning
shortest phase
![Page 26: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/26.jpg)
G2 Phase
organelles produced
prepare for cell division
![Page 27: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/27.jpg)
10.2 Post Read Questions1.Describe the 2 stages of cell division.
2.Draw a chromosome and label and describe its parts.
3.What are the different phases of interphase? Describe each one.
4. What is the cell cycle?
![Page 28: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/28.jpg)
10.2 B
12 / 06 / 06
![Page 29: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/29.jpg)
QuickTime™ and aCinepak decompressor
are needed to see this picture.
![Page 30: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/30.jpg)
Interphase
In between periods of cell division Cell growth and DNA replication occur
![Page 31: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/31.jpg)
Prophase
first and longest phase (50%-60%)
chromosome becomes visible centrioles take position on opposite sides of nucleus at the centrosome
![Page 32: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/32.jpg)
Prophase
Centrioles lie in centrosome so they can organize the spindle
Spindle = fanlike microtubule structure that helps separate the chromosomes
![Page 33: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/33.jpg)
Prophase end = chromosomes coil and nuclear envelope break down
![Page 34: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/34.jpg)
Metaphase
lasts only a few minutes
chromosomes line up across the center of the cell
![Page 35: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/35.jpg)
Metaphase (cont) microtubules connect the centromere of each chromosome to the two poles of the spindle
![Page 36: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/36.jpg)
Anaphase centromeres that join the sister chromatids split into individual chromosomes and are moved apart to opposite poles
![Page 37: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/37.jpg)
Telophase chromosomes become dense material
spindle breaks apart nucleolus appears
![Page 38: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/38.jpg)
Cytokinesis Division of cytoplasm usually occurs the same time as telophase
Animal Cell = cell membrane draw inward and pinched off
Plant cell = cell plate forms midway between the 2 nuclei; cell wall appears
![Page 39: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/39.jpg)
I P M A TNTERPHASE
ROPHASE
ETAPHASE
NAPHASE
ELOPHASE
![Page 40: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/40.jpg)
A
B
C
D
E Put the pictures in
order
![Page 41: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/41.jpg)
ANSWER
D
C
E
A
B
![Page 42: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/42.jpg)
Ch 10 Review Questions (Cont)
1. What is cytokinesis? When does it occur?
2. Compare how cytokinesis works between animal and plant cells.
3. Describe metaphase. 4. Describe anaphase.5. If you were to look at a picture
of telophase and anaphase, how can you distinguish the difference between the two?
![Page 43: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/43.jpg)
10.3
12 / 7 / 06
![Page 44: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/44.jpg)
Review: Cell Cycle
Preparing for Cell Division INTERPHASE
G1 S G2
![Page 45: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/45.jpg)
![Page 46: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/46.jpg)
Review: Cell Cycle Steps of Cell Division
Mitosis Prophase Metaphase Anaphase Telophase / Cytokinesis
![Page 47: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/47.jpg)
Look at Figure 10.7 Observe what is going on
What is happening in each step?
![Page 48: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/48.jpg)
Cyclin
protein regulates the timing of the cell cycle in eukaryotic cells
![Page 49: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/49.jpg)
Regulatory Proteins Two types1.Internal Regulators2.External Regulators
![Page 50: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/50.jpg)
Internal Regulators proteins that respond to events inside the cell
signals cell cycle to continue ONLY WHEN OTHER THINGS ARE COMPLETE
![Page 51: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/51.jpg)
External Regulator proteins that respond to events outside the cell
direct cells to speed up or slow down the cell cycle
example: growth regulators
![Page 52: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/52.jpg)
Uncontrolled Cell Growth Cancer
body loses ability to control growth
does not respond to the regulator proteins
result = large masses of cells
![Page 53: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/53.jpg)
Tumorsmasses of cells damages the surrounding tissues
cells break off and spread throughout the body
![Page 54: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/54.jpg)
Cause of cancer brought on by smoking tobacco
radiation exposure viral infection etc
![Page 55: 10.1 Pre-Read Questions 1.Name 2 limitations to cell growth. 2.How does DNA limit cell growth? 3.Why is the ratio of surface area to volume important?](https://reader034.vdocuments.site/reader034/viewer/2022042822/56649e545503460f94b4b843/html5/thumbnails/55.jpg)
10.3 Review Questions1.Why is it important for cells
to have regulated cell growth?2.What is the purpose of the
protein cyclin?3.Compare and contrast internal
regulators and external regulators.
4.What is cancer? What causes cancer?