Cell Division 3 reasons cells need to divide
- Slides: 14
Cell Division
3 reasons cells need to divide Reason Why
3 reasons cells need to divide Reason Growth Repair Reproduction Why
3 reasons cells need to divide Reason Why Growth An individual cell cannot grow very large so it has to split into two cells with the same function Repair Reproduction
3 reasons cells need to divide Reason Why Growth An individual cell cannot grow very large so it has to split into two cells with the same function Repair Cells don’t live as long as we do. We need to replace cells that die. Reproduction
3 reasons cells need to divide Reason Why Growth An individual cell cannot grow very large so it has to split into two cells with the same function Repair Cells don’t live as long as we do. We need to replace cells that die. Reproduction Organisms made of one cell need to divide to make new organisms
Cell structures needed for cell division • Nucleus: The control center of the cell - It directs cell division - Contents of the nucleus for cell division
Cell structures needed for cell division • Nucleus: The control center of the cell - It directs cell division - Contents of the nucleus for cell division - Chromosomes: The material that directs all the activities of the cell. - Made of DNA (deoxyribonucleic acid) - Nucleolus: Makes the ribosomes and ships them out to the cell.
Chromosomes and DNA
What is DNA made of? • The structure of DNA looks like a twisted ladder. – The sides of the ladder are made from sugarphosphate chains – The steps of the ladder are made from two of the four nitrogenous bases • • Adenine Cytosine Thymine Guanine
What is DNA made of? .
Which nitrogenous bases pair up?
DNA Replication • Before a cell divides it needs to make sure it has two copies of DNA. To make this copy it unzips and new pieces of DNA fill in the other sides
- 3 reasons why cells divide
- 4 reasons why cells divide
- Section 10-2 cell division
- Cell cycle and cell division
- Cell cycle phases
- Dna is scrunched up as what in dividing cells
- How do you know when to divide
- Why do cells divide instead of growing larger
- Why do cells divide, instead of simply growing larger?
- Mitosis stage
- Why do cells divide? *
- Cell division
- Why do cells divide instead of growing larger
- How does a cell obtain energy
- Why cells need energy