Chapter 4/5 (#2) Flashcards Preview

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Flashcards in Chapter 4/5 (#2) Deck (24):
1

Intracellular Membranes

- synthesis, storage, transport/ export molecules

2

ER:

Endoplasmic Reticulum

3

Smooth ER (SER)

-tubular

-synthesis of lipids, cholesterol, vitamin D

-detox of poisons

4

Rough ER (RER)

-flattened sacs ribosomes

-synthesis of PROTEINS

5

Transport Vesicles

-membrane sacs, carry ER products

6

Golgi Apparatus

- parallel flattened compartments

-packages lipids/ proteins

-DIRECTS transport to other sites
(mailman of cell)

7

Lysosomes

-permanent vesicles

-contain digestive ENZYMES

8

_______ recycle worn out cell parts,
break down ingested debris

Lysosomes

9

Peroxisome

-breaks DOWN hydrogen peroxide

-H2O2 can damage cell

-H2O2 is byproduct of rxns

10

Mitochondrion

- provides energy for cellular activities

-breakdown carbon containing molecules

-process is called AEROBIC RESPIRATION*

11

Mitochondria are MOST abundant in cells with a...

-high activity level

-muscle cells have MOST mitochondria

12

Mitochondria have their OWN...

- DNA

-ribosomes

-reproductive cycle

13

Specialized Structures

-only found in certain cell types

14

Plastids

-found in plants AND protistans

-harvest solar energy

-store materials

15

Chloroplasts

-convert solar energy into chemical energy in form of CARBON compounds...

-photosynthesis

-have their own DNA

-originated via endosymbiosis

16

Chromoplasts

-give color to fruits/flowers

-store yellow, orange, red pigments

17

Leucoplasts

-colorless storage organelles
store starch granules, lipids, proteins

18

Large Central Vacuole

-contains H2O, storage products
-reduces the volume of active cytoplasm &

-increases the cells SA/V ratio

-pressure of H2O keeps cells inflated that prevents wilting

19

Some Large Central Vacuole contain...

1) poisons that protect plants from animals

2) rubber or opium

20

Contractile Vacuole

-collets H2O, pumps out

-found in FRESH water protistans

21

Flagellum

-found in SOME protista

-long, whip-like

ex. sperm cells

22

Cilia

-many short projections

-found in SOME protista

ex. found in respiratory tract

23

Cell Walls

-surround PLANT cells

-cellulose in PLANTS

-found in archaea, bacteria, fungi, protista

24

Extracellular Matrix

-produced by most animal cells

-fibrous proteins/polysaccharides

-surround cells

-glues cells to one another

ex. bones