Cell Unit Test

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Plasma (cell) membrane

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Biology

9th

41 Terms

1

Plasma (cell) membrane

a flexible boundary of a cell; controls the movement into and out of the cell and seperates cell from surrondings, composed of Phospholipid Bilayer

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2

Cytoplasm

clear gel like fluid inside the cell, contains many of the materials involved in cell metabolism

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3

Endoplasmic Reticulum (ER)

pathway to transport materials throughout cell; site for protien and lipid synthesis

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4

Nucleus

control center of the cell; helps with metabolism and reproduction and contains DNA

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5

Ribosome

make protiens, made up of RNA and protiens

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6

Lysosome

involved in the digestion of food within the cell; remove waste and bacteria

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7

Mitochondria

site of cellular respiration; releases energy for the cell and converts stored energy in glucolse into ATP for cell

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8

Golgi Apparatus

Sorts protiens made by ribosomes, packages the products of a cell, attached to the ER and sends them places they need to be in the cell

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9

Centriole

structures involved in mitosis in animal cells only

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10

Vacuole

fluid filled organelles enclosed by a membrane; contains stored food or wastes

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11

Nucleolus

site of the production of ribosomes; within the nucleus

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12

Nuclear Membrane

Controls movement into and out of the nucleus, holds nucleus together

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13

Cell Wall

rigid wall outside of plasma membrane; gives plant cells its shape and provides protection, made of celluouse

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14

Cilia

hairlike structures with the capacity for movement

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15

Flagella

a long hairlike structure used for movement

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16

Chloroplast

Site of photosynthesis; captures light and energy

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17

cell plate

during cytokinesis, the new cell wall that begins to form in the middle, dividing the two sides

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18

Chromosone

carry genetic information, condensed form of DNA

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19

nuclear pore

hole in nuclear membrane

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20

plastid

stores food or contains pigment

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21

microtubule

microscophic cylinders that support and give the cell shape

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22

Rough ER

contains ribosomes, transports, protien synthesis

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23

Smooth ER

no visible ribosomes, lipid synthesis, detoxification

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24

Chromatin

loose form of DNA

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25

Prokaryotic cells example(s)

bacteria

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26

Eukarytoic cells examples(s)

animal, plant fungi, protists

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27

Selective Permability

allows nutrients to enter the cell and waste to be removed

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28

polar head

attracted to water

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29

touls

hydrophobic( does not like water)

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30

Active transport

Needs ATP (energy) materials move against the concentration gradient

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31

Passive Transport

Does not need ATP energy materials move with the concentration gradient

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32

Facilitated Diffusion

traveling through concentration gradient (high to low) most of the time has to go through protien

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33

Osmosis

diffusion of water

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34

Dynamic Equilibrium

molecules do not stop moving

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35

Endocytosis

cellular process in which substances are brought into the cell

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36

Exocytosis

contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane

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37

cell theory

the theory that cells form the fundamental structural and functional units of all living organisms

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38

isotonic solution

the solutions have the same concentration value of solutes water moves equally in/out of the cell; there is no net movement cell is happy and stable

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39

hypertonic solution

more solute (stuff in the solution) water moves toward a greater solute concentration H2O leaves the cell and the cell shrivels

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40

hypotonic solution

Less solute (pure water) water moves into the cell and bursts

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41

Diffusion

the net movement of a substance travelling down its concentration gradient (moves to high concentration to a low concentration)

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