Bio 203- Lab/lecture 2 [Part 1]

Front 1

Exercise 5: The Organization of Cells
-Lab Study C: Multicellular Organism (Purpose)

Back 1

-Characterize the organization of plants cells in a wet mount Elodea
-Characterize animal cell organization in human cells

Front 2

Exercise 5: The Organization of Cells
-Lab Study D: Unknowns (Purpose)

Back 2

-Characterize morphological and behavioral traits of unknown microbes in a sample pond water

Front 3

Tissues

Back 3

Group of specialized cells

Front 4

Organ

Back 4

Group of Tissue

Front 5

Organ System

Back 5

Group of Organ

Front 6

Cell Wall

Back 6

Rigid outer framework surrounding the cell. Gives cell a definite shape and support. (not found in animal cells)

Front 7

Protoplasm

Back 7

Organized contents of the cell, exclusive of the cell wall

Front 8

Cytoplasm

Back 8

The protoplasm of cell, exclusive of the cell wall

Front 9

Central Vacuole

Back 9

Membrane bound sac within the cytoplasm that is filled with water and dissolved substances.
-Structure serves to store metabolic wastes
-Gives the cell support by means of turgor pressures
-Plant and animal cells have them, but animal vacuoles are smaller

Front 10

Chloroplast

Back 10

Green, spherical organelles often seen moving within cytoplasm.
-carry pigment chlorophyll
-involved in photosythesis

Front 11

Elodea Canadensis
(Plant Cell)

Back 11

Other structures: cytoplasmic strands

Front 12

Cytoplasmic Streaming (Cyclosis)

Back 12

As the microscope heats up the cells, cytoplasm and chloroplasts may begin to move around the central vacuole.

Front 13

Nucleus

Back 13

Usually spherical, transparent organelle within the cytoplasm
-Controls cell metabolism and division

Front 14

Epithelial Cells

Back 14

Occur on the outside of animals and serve to protect the animals from
-water loss
-mechanical injury
-foreign invaders
-line interior cavities and ducts in animals
(similar to plant epidermal cells)

Front 15

Cell Membrane

Back 15

Boundary that separates the cell from its surroundings (in animals cells they have cell membrane not cell wall)

Front 16

Cheek Cells

Back 16

Front 17

Prokaryotic Organization

Back 17

Front 18

Eukaryotic Cell

Back 18

Front 19

Aggregates

Back 19

Clusters of cells

Front 20

Colonies

Back 20

Cluster composed of a consistent and predictable number of colonies

Front 21

Autotrophic

Back 21

photosynthetic

Front 22

Hetereotrophic

Back 22

Deriving food from other organism or their by-products

Front 23

Ectoplasm

Back 23

the thin, transparent layer of cytoplasm directly beneath the cell membrane

Front 24

Endoplasm

Back 24

the granular cytoplasm containing the cell organelles

Front 25

Contractile vacuoles

Back 25

clear, spherical vesicles of varying sizes that gradually enlarge as they fill with excess water. Once you've located a vacuole, watch it fill and then empty its contents into surrounding environment. These vacuoles serve an excretory function for the amoeba.[amoeba]

Front 26

Food vacuoles

Back 26

Small, dark, irregularly shaped vesicles within the endoplasm. They contain undigested food particles [amoeba]

Front 27

Vacuoles

Back 27

transparent spheres. In the Scenedesmus alga, it tends to occur at either end of the cell.

Front 28

Spines

Back 28

In the Scenedesmus alga, they are the transparent projections that occur on the two end cells

Front 29

Scenedesmus

Back 29

terrestrial green alga that grows on the north sides of trees

Front 30

Volvox

Back 30

an aquatic green alga is common in aquaria, ponds and lakes
* form a large complex colony
* cytoplasmic connections between cells

Front 31

Complex Colony

Back 31

Approx. 500-50,000 cells that are permanently united, there are cytoplasmic connections between cells and some cells are specialized for reproduction.

Front 32

Cytoplasmic Strands

Back 32

Connections between adjacent cells

Front 33

Daughter colonies

Back 33

Smaller spheres within the larger colony.
-Produced asexually
-When large enough they will be discharged into surrounding environment.