Biology Vocab Unit 3 Cell and the Cell Membrane

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Hypertonic

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26 Terms

1

Hypertonic

when comparing two solutions, the solution with the greater concentration of solutes

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2

Hypotonic

when comparing two solutions, the solution with the lesser concentration of solutes

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3

Isotonic

when the concentration of two solutions is the same

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4

Osmosis

Diffusion of water through a selectively permeable membrane

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5

Diffusion

Movement of molecules from an area of higher concentration to an area of lower concentration.

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6

Chloroplast

Photosynthesis

<p>Photosynthesis</p>
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7

Endoplasmic Reticulum

A cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another.

<p>A cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another.</p>
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8

Golgi apparatus

A system of membranes that modifies and packages proteins for export by the cell

<p>A system of membranes that modifies and packages proteins for export by the cell</p>
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9

Mitochondria

Powerhouse of the cell

<p>Powerhouse of the cell</p>
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10

Nucleolus

Found inside the nucleus and produces ribosomes

<p>Found inside the nucleus and produces ribosomes</p>
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11

Nucleus

Control center of the cell

<p>Control center of the cell</p>
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12

plasma membrane

A selectively-permeable phospholipid bilayer forming the boundary of the cells

<p>A selectively-permeable phospholipid bilayer forming the boundary of the cells</p>
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13

Ribosomes

Makes proteins

<p>Makes proteins</p>
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14

Vacuole

Cell organelle that stores materials such as water, salts, proteins, and carbohydrates

<p>Cell organelle that stores materials such as water, salts, proteins, and carbohydrates</p>
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15

Vesicle

A membrane bound sac that contains materials involved in transport of the cell.

<p>A membrane bound sac that contains materials involved in transport of the cell.</p>
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16

Concentration Gradient

A difference in the concentration of a substance across a distance.

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17

Aquaporin

water channel protein in a cell

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18

Endocytosis

process by which a cell takes material into the cell by infolding of the cell membrane

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19

selectively permeable

a property of cell membranes that allows some substances to pass through, while others cannot

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20

facilitated diffusion

Movement of specific molecules across cell membranes through protein channels

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21

facilitated diffusion

the passive movement of molecules along the concentration gradient.

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22

passive transport

the movement of substances across a cell membrane without the use of energy by the cell

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23

active transport

Energy-requiring process that moves material across a cell membrane against a concentration difference

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24

Phagocytosis

"Cell eating"; an endocytic pathway by which a cell engulfs particles such as microbes or cellular debris.

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25

Exocytosis

Process by which a cell releases large amounts of material

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26

Pinocytosis

Cell drinking

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