Cell division
Cards (49)
- Cell spends most of its life in interphase
- Daughter cells are the new cells produced
- Somatic cells are body cells
- Gametes are sex cells
- Cells make new cells for various reasons:
- To grow
- To maintain a good surface area to volume ratio
- To replace dead cells
- To ensure genetic continuity
- To reproduce
- Synthesis is when DNA replication occurs
- Helicase untwists DNA
- Primase adds letters up and down
- Polymerase adds extra letters
- Ligase works on the lagging strand and ties Okazaki fragments together
- Topoisomerase cuts DNA when they twist to prevent tangling
- Purines include adenine and guanine
- Pyrimidines include thymine and cytosine
- A pairs with T and C pairs with G
- G0 is when the cell stops growing
- Eye cells and muscle cells don't grow past a certain point
- Animal cells pinch to split, while plant cells form a new cell wall to split
- The direction of the sugars determines the way the letters are added (3 to 5)
- Humans have 23 pairs of chromosomes
- Diploid means having 2 sets of chromosomes (2n)
- Prokaryotes have one chromosome and no nucleus
- Human body cells are diploid
- Cell plates cleave during telophase
- Spindle fibers are made from tubulin
- Mitosis creates cells that are identical
- Mitosis occurs after G2
- Mitosis creates cells that are diploid
- Mitosis occurs at different rates in different cells
- Chromosomes only split once
- In telophase, daughter cells reach centrioles
- In metaphase, duplicated chromosomes migrate to the middle
- In prophase, DNA is replicated, coils up, and condenses
- In Anaphase, the centromere replicates and divides
- In anaphase, daughter chromosomes move toward opposite poles
- In telophase, spindle fibers are completely broken down
- In prophase, the nuclear membrane disappears
- In prophase spindle fibers form
- In prophase continuous spindle fibers have overlapped
- In telophase the cell plate in plants begins to form
- In telophase the nuclear membrane and nucleolus begin to reform