40 Introductory Biology 



Centriole ^ 

 Cjo/gi body -*<c:Z7T^ 



/ 



Centro5phcre 



?\asma membrane 



NudeoJus 



{Plasmojomej 



Lin'm i^^ 



Mebaplasmk body 



Fibnila 



Cytoplasmic Cjranule 



_ -.hitophsm 

 A-. - _ ^ridoplasm 



-Xhromabin (granules 

 -^:- —JVuclear memhrane 



V'.' 



— Chromatin knob 

 (karyosomej 



.-^Mitochor)dna 



(chomdr'iosomej 



- Vacuole 



Fig. 8. — An animal cell (diagrammatic and generalized). Not all of the struc- 

 tures shown will be found in any one cell. Special preparation of a variety of 

 cells is necessary to see all of these structures. 



Eiodeo plant 



CeHwal/ ^ 



Plasma 



membrane 



Cytoplasm _\ 



Chloropld^. 



Cytoplasmic 



^ granules 



Nucleolus , 



Nucleoplasm N 



Nuclear 



memhrone 



Cyiophsmic 



strand 



Single cell 



Fig. 9. — A common fresh water plant known as Elodea (Anacharis). Only a 

 thin section of a single cell of a leaf is shown at the right. In the living cell the 

 chloroplasts are green and floating in the cytoplasm. The vacuole contains cell sap. 



