Marketing is the process which involves identifying existing customer needs and requirements and with anticipating future changes. It is therefore a dynamic discipline. The marketing environment for most, if not all, products changes regularly. The challenge facing the marketer is, therefore, to find out as much as possible about this changing environment so that the business can respond in a appropriate way. This remains true for any company regardless of the industry, from a bottle of car oil to a Fast Moving Consumer Good (FMCG) such as a bar of chocolate or a packet of soap powder.

21. What are cytoplasmic inclusions?

22. Where in the cell can ribosomes be found? What is the main biological function of ribosomes?

23. What is the difference between the smooth and rough endoplasmic reticulum?

24. A netlike membrane complex of superposed flat saccules with vesicles detaching from its extremities seen is observed during electron microscopy. What is the observed structure called? What is its biological function?

25. Which organelle of the cell structure is responsible for intracellular digestion? What is the chemical content of those organelles?

26. Why are lysosomes known as "the cleaners" of cell waste?

27. What are the morphological, chemical and functional similarities and differences between lysosomes and peroxisomes?

28. Which cell organelles participate in cell division and in the formation of the cilia and flagella of some eukaryotic cells?

29. What are mitochondria? What is the basic morphology of these organelles and in which cells can they be found?

30. Why can mitochondria be considered the "power plants" of aerobic cells?