Cells Flashcards
What is the size of an animal cell?
0.01mm - 0.05mm
What is the size of a plant cell?
0.01mm-0.010mm
What is the best unit to measure cells?
um - micrometres
Cell magnification equation
image size = magnification x real size
If cells are in the mm then how are sub cell structures measured?
nano metres—nm
What are the main reasons for cell division?
- organism grows
- organism become damaged and needs to produce new cells
What is the 5th stage of the cell cycle?
The cyctoplasm and two cell membranes divide to form two identical cells.
What is the first stage of the cell cycle?
Cell growth
What is the fourth stage of the cell cycle?
Mitosis
What is the third stage of the cell cycle?
More growth takes place and the DNA is ckecked for errors
What is the second stage of the Cell Cycle?
DNA synthesis,which makes the chromosomes now double stranded.
What is the sixth stage of the cell cycle?
The cell stops dividing
What is the sixth stage of Mitosis
Trick question,there are only five stages
What is the first stage of mitosis?
The cell begins to divide.
What is the third stage of mitosis?
The nuclear membrane breaks down and the chromosomes line up across the cell.