Cell Theory
What is the 1st statement of cell theory?
All living things are composed of cells.
Are they unicellular, multicellular, or both?
Unicellular
Are they unicellular, multicellular, or both?
True or False: ALL cells have a cell membrane.
True!
Cells are the smallest unit of life.
True! Keyword: life
What is the 2nd statement of cell theory?
Cells are the basic units of structure and function in an organism.
True or False: All bacteria are prokaryotes.
True!
True or False: Eukaryotes have a nucleoid.
False! Nucleoids are free-floating DNA - eukaryotes have a membrane-bound nucleus!
What is the macromolecule that stores genetic information in all cells?
DNA!
Everything you see contains cells.
False! Only living organisms are made up of cells.
What is the 3rd statement of cell theory?
Cells come only from the reproduction of existing cells.
What are the 3 shapes of prokaryotes?
Coccus (spherical); Bacillus (rod-shaped); Spirillum (rigid spiral)
What are 3 examples of multicellular eukaryotes?
Plants, animals, and fungi.
What are the 5 basic chemicals that all cells are made up of?
Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N), Phosphorous (P)
Cells form spontaneously starting from a nucleus.
False! All cells are the result of reproduction of existing, living cells.