Lab Test 2
The quiz will contain questions based on Online Labs 3 and 4, including: cell cycle calculations, stages of mitosis, experimental design and interpretation of results, bacterial growth stages AND serial dilutions & dilution plating calculations from Lab 2.
Cell Cycle Length Calculations
Formula:
Time in spent in each phase (min) = (# of cells in phase ÷ total cells) × total cycle time (min)
Length of Cell Cycle:
Stages of mitosis
Stage | What Happens |
|---|---|
Prophase | Chromosomes condense, spindle forms, nuclear envelope breaks |
Metaphase | Chromosomes align in the center (metaphase plate) |
Anaphase | Sister chromatids pulled apart to opposite poles |
Telophase | Chromosomes decondense, new nuclei form |
Cytokinesis | Cell splits into two (may overlap with telophase) |
Experimental design and interpretation of results,
Bacterial growth stages
Phase | Description |
|---|---|
Lag Phase | Bacteria adjust to environment, no growth yet |
Log Phase | Rapid cell division and exponential growth |
Stationary Phase | Growth slows, nutrients limited, cell death balances growth |
Death Phase | Cells die due to lack of resources and buildup of waste |
Serial dilutions calculations
Dilution plating calculations
