Yuen Long Public Secondary School

Biology

Name : 　　　　　　           （　）                           Time :      35 minutes

Class:        S4B                                                      Marks:                     29

Date:    11-Oct-2001

Long questions: Answer the following questions.

 

 1       The following table gives various components of cells and their functions.

Component	Functions
A	Carries genetic materials Controls all activities in the cell
B	Controls the materials entering and leaving the cell
C	The site for chemical reactions in the cell
D	Helps to release energy during cell respiration
E	Supports and gives shape to the cell
F	The site for photosynthesis

            a          Name components A to F.        (6 marks)

            b          Which components can be found in all cells?              (2 marks)

            c          Name one component, other than A to F, that may be seen when typical plant cells are observed with a microscope. State one function for this component.            (2 marks)

                                                                    

                                                                    

                                                                     

                                                                    

                                                                    

                                                                    

                                                                     

                                                                    
 2   a      Complete the following table concerning cell organelles.     (8 marks)

Descriptions	Name	Functions
May be present or absent in cells When present, there is only one in each cell
Present in all living cells, always exist in multiples, sausage-shaped
Contain a pigment, only found in plant cells but not present in all plant cells
Large and single in plant cells, small and multiple in animal cells

            b          Compare the carbohydrate storage in plant and animal cells. (2 marks)

                                                                    

                                                                    

                                                                     

                                                                    

                                                                    

 

3.                        Write a short essay on the title: “Distinguishing animal cell and plant cell under light microscope” (9 marks) 3 out of 9 marks are given for presentation skill.

                                                                    

                                                                    

                                                                     

                                                                    

                                                                    

                                                                    

 

 

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