Question

1. The eggs of birds are by far among the largest cells in nature. An egg must contain all the nutrients needed to nourish a developing bird embryo. The egg also has a special sac where the wastes produced by a developing chick are stored. How do these adaptations justify the enormous size of bird eggs in comparison to other cells? Be specific.

1.                                                                                                                                             

2.                                             

2. What three benefits does the cell obtain from its cytoplasm?

1.                                                                                                         

2.                                                                                                         

3.                                                                                 

3.List three organelles only seen in plant cells and three organelles only seen in animal cells.

a) Only in plant cells:                                                                                                             

b) Only in animal cells:

4. Identify at least three functions provided by the components of the cell’s skeleton (cytoskeleton) to the life and work of a cell.

Type of Fiber	Function
Microfilaments
Intermediate filaments
Microtubules

Answer 1

1)birds produce egg that are more assymetric or eliptical in shape. By these egg shape bird can maximize egg volume with out increasing egg width.. so egg can adapt all the functions of embryo with in tge cell compare to other cells.

2) 1)ytoplasm gives shape to cell

2)it help to fill all organells with in the cell in their place

3)most cell activity takes placein cytoplasm.. ie, enzymes found there..they breaking down waste, aid in metabolic activities.. etc

3)plant cell animal cell

*cell wall * centrosome

*chloroplast * lysosome

*specified plastids

4)microfilament

*provide support to cell

*helps in cell movement

*changes cell shape

Intermediate filament

*provide mechanical support to plasma membrane

*To reinforce cell

*organize cells in tissue

Microtubules

*provide cytoskeletal role in cell

*they are conveyer belt of cell

*they move vesicles, granules, mitochondria, and chromosomes