Cell Theory
Cells are the smallest living unit
What are the levels of organization?
The movement of a substance from a higher concentration to a lower concentration. (down a gradient)
What is diffusion?
This increases the amount of materials cells can move in and out of the cell.
What is surface area?
The cell spends a majority of its life in this phase.
What is interphase?
They are the basic unit of structure and function of living things
What are cells?
This solution causes water to move into a cell causing it to swell.
What is a hypotonic solution?
Chromosomes line up in the equator during this phase of the cell cycle.
What is metaphase?
Is formed by a group of similar cells that work together to perform a common function.
What is a tissue?
What is cytokinesis?
During this phase, DNA condenses to chromosomes, spindle fibers are formed, and the nuclear envelope disappears.
What is prophase?
Produces proteins.
What are ribosomes?
Can help increase the amount of surface area to allow diffusion.
What are villi?
This allows some materials to travel freely across the cell membrane.
What is selectively permeable?
Spindle fibers pull chromosomes apart during this phase of the cell cycle.
What is anaphase?
Who is Henrietta Lacks?
There is a higher concentration of salt in the solution outside of the cell.
What is a hypertonic solution?
There are many checkpoints across the cell cycle. The cell may fail inspection at any of these checkpoints and cause the cell cell to destroy itself.
What is apoptosis?