Chapter 11 ContRol of Gene ExpressioN

Cell Cycle

  • The cell cycle is a series of events from the time a cell forms until its cytoplasm

Interphase

  • This stage is the internal between when miotic divion and when a cell grows, and it spends most of its life in this stage
  • This is when the cell replicates its DNA and doubles the number of cytoplasmic components
  • There are 3 stages G1, S, and G2

Prophase

  • This is the first stage of mitosis, and the chromosomes are condensed
  • The nuclear envelope breaks up
  • Spindles made of microtubules form at each end of the cell

Metaphase

  • The chromosomes align in the middle of the cell
  • They are pushed and pulled by the microtubules to align in between the spindles

Anaphase

  • The microtubules the sister and the parent chromosomes to opposite sides
  • This makes separate chromosomes

Telophase

  • This is when the two chromosomes reach either end of the cell
  • The two bunches are exactly the same and have the same DNA
  • Then, a nuclear envelope starts to form around each cluster
  • This is the end of mitosis

Telomeres

  • These are noncoding DNA sequences at the end of eukaryotic chromosomes
  • They are junk sequences, but are essential to living a long life
  • They provide a buffer between the essential DNA, because each time a cell divides, a chromosomes lose about 100 nucleotides

Cancer

  • Cancer is when neoplasms become malignant and becomes harmful, or potentially harmful to the body.
  • The cancer cells reproduce at a much faster rate, which can sometimes become so big that it is easily noticeable, which is called a tumor
  • Cancer originally starts as a mutation in the cell

Made with Adobe Slate

Make your words and images move.

Get Slate

Report Abuse

If you feel that this video content violates the Adobe Terms of Use, you may report this content by filling out this quick form.

To report a Copyright Violation, please follow Section 17 in the Terms of Use.