The formation of a living thing from nonliving materials.
What is Spontaneous Generation?
An organism that is made of only one cell. It can fully function without help from other cells.
What is unicellular organism?
Internal balance of system that keeps it stable.
What is Homeostasis?
A membrane that allows certain substances to pass.
What is Semipermeable membrane?
The idea that eggs and sperm contain miniature people that simply increase in size after conception.
Some unicellular organisms work together in a _________.
Little organs, the parts inside a cell.
What is Organelles?
A solution that is more concentrated than the cytoplasm of a cell.
What is Hypertonic Solution?
The study of cells.
What is Cytology?
An organism whose organelles lack surrounding membranes.
What is prokaryotic?
The balance of motions in a system.
What is Dynamic equilibrium?
When cells and the solution that they are in have the same concentration of solutes.
What is Isotonic?
- Cells are the structural and functional units of all living things.
- Cells come only from other preexisting cells.
What is Cell Theory?
Made of two or more cells that depend on each other to function.
What is a multicellular organism?
Typical Bacterial Cell:
Prokaryote or Eukaryote?
What is Prokaryote?
When substances involved in a cell causes process to speed up.
What is Positive Feedback?
A group of organs that work together.
What is an Organ System?
An organism with cells that contain membrane-surrounded organelles.
What is negative feedback?
Movements of molecules, across a membrane without chemicals.
When molecules move, cell membrane.
What is Passive transports?
What is Facilitated Diffusion?