Chapter 7/8 Vocab Flashcards Preview

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Flashcards in Chapter 7/8 Vocab Deck (16)
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Cell

The basic units of living organisms

1

Cell theory

The theory that (1) all organisms are composed of one or more cells, (2) the cell is the basic unit of structure and organization of organisms, (3) all cells come from preexisting cells

2

Organelle

Membrane-bound structures with particular functions within eukaryotic cells

3

Prokaryote

Unicellular organisms, such as bacteria

4

Eukaryote

Unicellular or multicellular organisms, such as animals and plants

5

Nucleus

manages cellular functions and contains DNA

6

Plasma membrane

Flexible boundary between the cell and it's environment, cell membrane

7

Selective permeability

Chooses what goes in and out of the cell

8

Osmosis

Diffusion of water across a selectively permeable membrane

9

Isotonic solution

concentration of dissolved substances is the same on both sides of membrane

10

Hypotonic solution

A low solute concentration outside the concentration (WATER MOVES INTO CELL)

11

Hypertonic solution

High solute concentration outside of cell (WATER MOVES OUT OF CELL)

12

Passive transport

No energy used and high to low movement of materials

13

Active transport

energy used and low to high movement of materials

14

Endocytosis

Active transport process where substances move into the cell

15

Exocytosis

Active transport process where substances move out of the cell