Describe how different parts of the cell organelles are adapted to their functions
Answer:
-The cell membrane has two layers/ phospholipid and protein layers; to enclose cell contents; It is semi-permeable/ selectively permeable; to control movement of substances in and out of the cells/ allow selective movement of materials/ substances in and out of the cell;
-The cytoplasm is fluid filled; in which chemical reactions take place;
-The mitochondria has numerous cristae; to increase surface area for attachment of respiratory enzymes; it has a matrix to provide a site for respiratory reactions;
- Endoplasmic reticulum are interconnected channels; for transport for ribosomes and lipids;
-Ribosomes are spherical in shape; to provide a surface area for protein synthesis;
-Lysosomes contain lytic enzymes; to destroy the pathogens/ worn out cells/ tissue/ organelles and for digestion of food;
- Golgi apparatus/ bodies are tube like sacs; for packaging and transport of glycoproteins/ secretion and transport of synthesized materials/ formation of lysosomes;
- Centrioles are rod shaped to form spindle fibres during cell division / formation of cilia and flagella;
- The chloroplast has grana/ lamellae that contains chlorophyll; that traps light energy; the grana has a large surface area for accommodation/ packaging of the chlorophyll; the stroma contains the enzymes; that speed up/ catalyze the process of photosynthesis;
- Vacuoles contain salts/ sugars; to contribute to the osmotic properties of the cell;
-The cell wall is made of cellulose/ chitin (in fungi); to protect the cells against mechanical injury/ provide a definite shape/ provide mechanical support;
- The nuclear membrane has nuclear pores; which control movement substances in and out of the nucleus; the nucleus has nucleolus; to manufacture ribosomes; and contains the chromatin which contains genetic materials/ DNA;