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Cell - Unfinished
15 cards·by Nochu
4 basic tenets of cell theory
(1) All living things = composed of cells (2) Cell = basic functional unit of life (3)
Cellsarise only from preexisting cells (4) Cells car
Are viruses living things?
No
Why are viruses not living things?
Acellular, cannot reproduce without the assistance of a host cell, may contain RNA as their
genetic material
Eukaryotes
Have membrane-bound organelle, a nucleus, form multicellular organisms
Cell membrane and membranes of organelles both contain?
Phospholipids
How are phospholipids organized?
Hydrophilic interior and exterior surfaces with hydrophobic core
Cytosol function
suspends organelles and allows diffusion of molecules throughout the cell
Eukaryotic organelles
nucleus, nucleolus, mitochondria, lysosomes, ER, golgi apparatus, peroxisomes
How is DNA organized in the nucleus?
Chromosome form and is organized into coding regions called genes
What is the nucleus surrounded by?
Nuclear membrane or envelope
What is the nuclear membrane?
Double membrane that contains nuclear pores for 2-way exchange of materials between the
nucleus and cytosol.
Nucleolus
Subsection of the nucleus in which ribosomal RNA is synthesized
Function of the outer mitochondrial membrane
Forms a barrier with the cytosol
Describe the inner mitochondrial membrane
Folded into cristae, contains enzymes for ETC, has the mitochondrial matrix on the inside
Intermembrane space
Between the mitochondrial membranes