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Biology : Plant & Animal Cells III (Parts & Functions)


Given the PLANT / ANIMAL
CELL PART, identify the DESCRIPTION

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1.

Endoplasmic Reticulum

  It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid). After cell division takes place, these chromatin fibres undergo certain structural changes, and are called chromosomes. These chromosomes carry the hereditary information of the genes.

  It is a plastid, containing pigments such as xanthophyll (yellow in color) and carotene (orangish-red in color). These pigments impart color to flowers and fruits of plants.

  It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.

  It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and helps in the manufacture of food by the process of photosynthesis.

  Half-n-half Clue
 

2.

Golgi Apparatus

  It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.

  It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.

  It synthesizes and secretes certain substances, namely hormones and enzymes. It also helps in the formation of acrosome of sperm.

  It controls and coordinates all the activities and functions of the cell. It plays a vital role in cell division.

 
Hint      

3.

Mitochondrion

  It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.

  It is the site of ATP (Adenosine triphosphate) synthesis. It also synthesizes respiratory enzymes.

  It is a plastid. It helps in the storage of starch.

  It synthesizes and secretes certain substances, namely hormones and enzymes. It also helps in the formation of acrosome of sperm.

  Half-n-half Clue
 

4.

Nucleus

  It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and helps in the manufacture of food by the process of photosynthesis.

  It is a plastid. It helps in the storage of starch.

  It controls and coordinates all the activities and functions of the cell. It plays a vital role in cell division.

  It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid). After cell division takes place, these chromatin fibres undergo certain structural changes, and are called chromosomes. These chromosomes carry the hereditary information of the genes.

 
Hint      

5.

Lysosome

  It performs intracellular digestion. It also helps in destroying foreign substances.

  It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid). After cell division takes place, these chromatin fibres undergo certain structural changes, and are called chromosomes. These chromosomes carry the hereditary information of the genes.

  It is known as the 'site of protein synthesis in the cell', and synthesizes proteins. It is chiefly composed of RNA (Ribonucleic acid).

  It controls and coordinates all the activities and functions of the cell. It plays a vital role in cell division.

  Half-n-half Clue
 

6.

Cell Wall

  It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.

  It provides protection, shape and rigidity to the cell. It is freely permeable, allowing substances in the form of solutions to enter and leave the cell without any hindrance.

  It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.

  It initiates and regulates cell division. It also helps in forming spindle fibres, with the help of asters.

 
Hint      

7.

Cytoplasm

  It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and helps in the manufacture of food by the process of photosynthesis.

  It is the house of all metabolic activities and functions in the cell. In other words, it contains most of the cell organelles, each of which perform a specific function.

  It provides protection, shape and rigidity to the cell. It is freely permeable, allowing substances in the form of solutions to enter and leave the cell without any hindrance.

  It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.

  Half-n-half Clue
 


 
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