Exercise Chapter 1 Form 5
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This document discusses microorganisms and contains several activities: 1. An exercise with true/false and multiple choice questions about microorganisms, including that they are living things, are tiny, and can be seen with a microscope. 2. A true/false activity about microorganisms, including that some can be seen with the naked eye and undergo life processes like humans. 3. A fill-in-the-blank activity about microorganisms undergoing life processes and their different shapes, sizes, and viewing with microscopes. 4. An activity to classify types of microorganisms like bacteria, fungi, protozoa, and algae. 5. A fill-
Exercise Chapter 1 Form 5
- 1. ACTIVITY 1 : MICROORGANISM EXERCISE 1 . UNDERLINE THE CORRECT ANSWER. 1. Microorganisms are (living things / non-living things) 2. “ Micro” means ( tiny / large) 3. Organism means ( living things/ non-living things) 4. Microorganism can be found only by (telescope/microscope) 5 They exist in different shapes, sizes and colour. They can be found in air , soil, and water and in or on the plants and animals. They are ( protozoa / bacteria) 6. They eat from live organisms. They are the smallest of all microorganisms. They are ( yeast/ viruses ) 7. They can be found in lake, ponds (kolam), rivers and lakes (tasik). They geat food from other microorganisms. They are ( Yeast/ Protozoa) 8. They can be found on mouldy bread and rotten food. They are ( Protozoa/ Fungi) 9. All microorganisms breathe. During breathing, (carbon dioxide /oxygen )is taken in and (carbon dioxide /oxygen) is given out. 10. The similarity between bacteria and fungi is both are ( non-living things/ microorganisms) ACTIVITY 2. WRITE ‘TRUE’ OR ‘FALSE’ IN THE BOXES PROVIDED. 1. Worms, bacteria and ants are three types of microorganisms . 2. We can see microorganisms with the naked eye. 3. Like humans, microorganisms breathe, grow and move 4. A magnifying glass can be used to see some of the microorganisms. 5. The name of bacterias are according to their shapes. 6. The smallest among all microorganisms is protozoa. 7. All microorganisms are harmful. 1
- 2. ACTIVITY 3 TOPIC : MICROORGANISM UNDERGO LIFE PROCESSES EXERCISE 3 . Fill in the blanks with correct answers.Some answers may be used twice. Microorganisms are a) ________________. They come in different (b) ___________________ and (c) ________________. We cannot see microorganism through our naked eyes because microorganisms are too (d)_____________ in size. However, they can be seen by using a (f) _____________________. There are five groups of microorganisms, namely (g) __________________, (h)_____________________, (i)_____________________, (j) ___________________________ and (k)______________________. Like other living things, microorganisms can (l) __________________________, (m) ______________________________ and (n) ______________________________ 2
- 3. ACTIVITY 4 Name the type of microorganisms CCTS : classfying Date : ___________________________ A . B. C. C . D. E. F. G. H I. TYPES OF MICROORGANISMS : FUNGI, VIRUSES, BACTERIA, PROTOZOA, ALGAE __________________________ 3
- 4. TOPIC : MICROORGANISMS ARE HARMFUL AND USEFUL. MICROORGANISMS ARE USEFUL. DATE : ________________________ 1. Complete the following statements. 2. Fill in the blanks with correct answers. Lactobacillus harmful yeast breathes oxygen carbon dioxide fungus humus Some microorganisms are useful and some are a) _______________to us. b)______________________ is an example of microorganism that is widely used in the food industry. Yeast is a fungus. It is used in the making of bread, cheese, tempeh and tapai .When yeast is added to a sugar solution, it uses the sugar as a source of food. When it c) ___________________, it takes in d)__________________________ and releases e)_______________________________that can be seen in the mycelium of the fungus when it grows. Carbon dioxide makes the bread dough rise. 4
- 5. Some bacteria, for example f) ________________________ is widely used in making yogurt drink. Antibiotics such as penicillin are extracted from penicillium, which is a g) ____________________ Bacteria and fungi in soil which act on grass and leaves or any other organic materials and convert them to h) ___________________________________ by a process known as biodegradation. ACTIVITY 3 : FILL IN THE TABLE WITH THE CORRECT ANSWERS. B. MICROORGANISMS CAN CAUSED FOOD POISONING THROUGH SPOILED FOOD Microorganisms can cause food to turn bad: Fill in the table with the corrects answers. TYPES OF FOOD SIGNS OF FOOD THAT HAVE TURNED BAD Milk Vegetables Fish Rice 5
- 6. EXERCISE 1 TOPIC : MICROORGANISMS ARE HARMFUL AND USEFUL. MICROORGANISMS ARE USEFUL. DATE : ________________________ 1. State four harmful actions of bacteria. a) ____________________________________________________________ ___________________________________________________________ b)___________________________________________________________ ____________________________________________________________ c)___________________________________________________________ ___________________________________________________________ d) __________________________________________________________ __________________________________________________________ Exercise 2. Match correctly 6
- 7. Exercise 3 State a way to prevent each disease from spreading Name of disease Way to prevent it from spreading a)Cough b) chickenpox b) upset stomach / diarrhea c) flu 2. Write “true” for the correct statements and ‘false’ for the wrong statements. a) All microorganism are harmful. They cause food too turn bad and make us ill. b) Cake, buns and milk are produced by using microorganisms. c) Microorganisms can be carried from place to place and spread from one person to another d) Patients who have AIDS should be quarantined to prevent the disease from spreading to another person. e) Flu can be spread by air f) We boil water before drinking to kill the living microorganisms in water 7