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The Outer Envelope

13 minutes 53 seconds

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Still image from The Outer Envelope

Part of the "Inside the Living Cell" series. Describes the properties of the plasma membrane, how it governs the kinds of molecules that go in and out of cells, and how cells feed by engulfing (phagocytosis) and drinking in (pinocytosis) fluids. Also reviews membrane structure, osmosis, transport proteins, active transport, cell eating, cell drinking, and receptor proteins. Accessibility options on the DVD are: (1) expanded description, (2) English subtitles in a black box, (3) subtitled description.

Media Details

Runtime: 13 minutes 53 seconds

Microscopic view of brick-like cells with red nuclei. Caption: this is a one-cell-think section of a growing onion root-
Inside The Living Cell
Episode 1
14 minutes 10 seconds
Grade Level: 8 - 12
Parallel lines of oval objects form a wall bridged by tendril like structures. Floating on either side of the wall are spherical objects. Caption: for larger molecules to get through.
Inside The Living Cell
Episode 2
13 minutes 53 seconds
Grade Level: 8 - 12
Illustration of a strand of DNA with a substance on one edge of it. Caption: To make a protein, the DNA is opened by an enzyme.
Inside The Living Cell
Episode 3
12 minutes 26 seconds
Grade Level: 8 - 12
Illustration of a cell showing the cross section to expose the contents of the cell. Ribbon-like substance blankets the inner edge with spheres of various sizes suspended within. Caption: First, mitochondria take in molecules derived from food,
Inside The Living Cell
Episode 4
13 minutes 18 seconds
Grade Level: 8 - 12
Illustration of two cells with identical internal structures. Caption: are passed on to each new generation of cells,
Inside The Living Cell
Episode 5
14 minutes 11 seconds
Grade Level: 8 - 12

Viewer Comments

  • Tiny default profile photo
    Shelley P. (Nampa, ID)
    October 21st, 2015 at 04:00 PM

    The first part was for very young audiences, but the 2nd part was great. The amoeba footage was excellent.