Louise Pasteur

Louis Pasteur Class 8 All Question Answer

Louise Pasteur is a very nice chapter given for class 8 students of SCERT Assam. Louise Pasteur was a French Biologist. He found a cure for rabies. Read this article to get all Louise Pasteur chapter’s question answers… 

Louise Pasteur Summary

Born on December 27, 1822 Louis Pasteur was a French Biologist. He is renowned for his discoveries of the principles of Vaccination. This story is about Louis Pasteur, He found a cure for rabies, which was considered as one of the deadliest diseases of the 19th and 20th centuries. 


Let’s Read the story
One Day when Louis Pasteur was playing with his friends. Suddenly he saw a man strangely running towards him. He was very frightened, Louis asked him the reason for his such behaviour. The man replied that “Someone has been bitten by a mad wolf from the mountain”. Louis understood that the mad wolf was suffering from rabies.

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If you don’t know, Rabies is a viral disease that causes inflammation of the brain in humans and other mammals. Animals with this viral disease get  Mad. This viral is can be spread to humans also if human beings are bitten by animals with rabies. 

Many years later, after that incident. Louis Pasteur started experimenting to discover the vaccine for this disease. He started his experiments on rabbits. In his experiments, he treated rabbits by injecting them with the same virus and he succeeded in curing them. After this successful experiment on rabbits, he thought to try it on human beings. And that chance came on 6 July 1885, when a boy was returning from school was bitten by a Mad dog. Her mother came to Pasteur to seek help She started crying. Louis Pasteur answered her that he is ready to give everything he had.

Louise Pasteur Summary Contd...

As the vaccine which was used on rabbits was successful but Pasteur was not sure about the outcome of the same vaccine when used on human beings. He thought that if it works it will benefit the entire human race in the future. Thinking this he made up his mind to take the risk. He injected the boy with the virus. After injecting the virus Pasteur Kept him under observation, the result which came was very surprising, the boy responded to Pasteur’s treatment. It was a huge achievement for Pasteur and a great discovery for the human race. This new method of treatment of rabies made Pasteur famous all over the world.

Louise Pasteur All Question Answers

1. Answer the following questions to check your understanding:

(a) What happened one day while Louis Pasteur was playing with his friends?

Ans: One day while Louis Pasteur was playing with his friends, a man came running to him. The man was very frightened and told him that someone had been bitten by a mad wolf from the mountain.


(b) What does rabies cause in human beings?

Ans: Rabies is a species of virus. Rabies causes inflammation of the brain in human beings. It turn human beings mad and die.


(c) What experiment did Pasteur conduct on rabbits?

Ans: Louis Pasteur carried on experiments on rabbits to find a cure for rabies. In his experiments, he injected the rabbits with the virus and succeeded in curing them.

Louise Pasteur

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(d) Who was Pasteur’s first human patient? Was his treatment successful?

Ans: Pasteur’s first human patient was a school boy who was bitten by a mad dog. Yes, his treatment was successful.


(e) Where and when did the French government establish the Pasteur Institute? What is it famous for?

Ans: The French government established the Pasteur Institute in Paris in 1885. The institute is famous for studies in biology, micro-organisms, diseases, and vaccines.


2. You must have noticed that the lesson has many words related to diseases. Read the lesson carefully and note down all these words in the word web below. One has been done for you.

Ans: DISEASE

i) Virus

ii) Aids

iii) Malaria

iv) Rabies

v) Ailing

vi) Inflammation

vii) Rubella

viii) Measles.


3. Here are five friends sharing information about diseases. Complete their dialogues with information from the lesson.

(a)Puja:Beware of animal bites ………………………………………………………………………………………………


b)Rohan: Measles is a deadly disease. It can lead to ………………………………………………………………………………………………


c)Pushpa: Rubella infection can lead to ………………………………………………………………………………………………


d)Jumon: The anopheles mosquito ………………………………………………………………………………………………

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Ans:

(a)Puja: Beware of animal bites because they may cause rabies.

(b)Rohan: Measles is a deadly disease. It can lead to Pneumonia, Diarrhoea and other life threatening complications.

(c)Pushpa: Rubella infection can lead to blindness, deafness, mental retardation and congenital heart defects.

(d)Jumon: The anopheles mosquito is a carrier of Malaria.


4) Do you know what a flowchart is? It is a diagram that shows how one thing leads to the next. Read the lesson once again and complete the flowchart to show the chain of events. The first entry has been inserted for you.

Pasteur sees a man bitten by a mad wolf.

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Ans:

a) Pasteur sees a man bitten by a mad wolf.


b) The man suffers from rabies.


c) It causes the inflammation of his brain.


d) He goes mad.


e) He dies of the deadly disease.


5. Here are some sentences from the lesson.

A man came running towards Louis Pasteur. The man was very frightened. “What is the matter?” Louis asked him. Someone has been bitten by a mad wolf from the mountain.

Look at the words printed in italics.

Can you recall which grammatical structure is represented by the words in italics? Fill in the blank spaces provided below to give the answer.

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The words printed in italics are in the P _ _ _ _ _ _ voice.


Ans: Passive.


By changing the verb forms, the sentences can also be written in the following way:


(a) A mad wolf from the mountain has bitten someone.


This sentence is in the A _ _ _ _ _Voice.


Ans: Active.


Now, read the lesson and find out other sentences in Active voice. Reframe these sentences if necessary. Then convert them into their Passive forms.


6.(a) Let’s learn some tense forms:

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We use the Simple Present tense

(i) to express universal truths:

Animals with rabies grow mad.


(ii) to express habitual or repeated action:

Louis Pasteur plays with his friends.


(iii) to indicate situations that are permanent:

He works in the institute.


(b) We use the Present Continuous tense to express an action that is presently going on:

He is working on his experiment.


(c) Now complete these sentences using the Simple Present or the Present Continuous forms of the verbs in brackets:

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(i) We ______ football in the afternoon. (play)

(ii) The sun ______ in the east. (rise)

(iii) Don’t make a noise; the baby ________. (sleep)

(iv) Someone _______ at the door; can you hear it? (knock)

(v) The man _______ towards the bus. (run)

(vi) The bus usually _______ at 8 o’clock. (come)

(vii) He _______ for an engineering entrance examination. (prepare)

(viii) He _______ German. (learn)


Ans:

(i) We play football in the afternoon.

(ii) The sun rises in the east.

(iii) Don’t make a noise; the baby is sleeping.

(iv) Someone is knocking at the door; can you hear it?

(v) The man  is running towards the bus.

(vi) The bus usually comes at 8 o’clock.

(vii) He is preparing for an engineering entrance examination.

(viii) He learns German.

7. (a) We use the Simple Past tense:

(i) to talk about an action that has already taken place, e.g.


This method of treatment of rabies made Pasteur famous all over the world.


(ii) to show a series of completed actions, e.g.


He injected the boy with the virus and kept him under watch.


(b) We use the Past Continuous tense:

(i) to refer to an action that was going on for a certain period of time in the pass. e.g.


One day, a boy called Louis Pasteur was playing with his friends.


(ii) to show that something happened while another action was going on. e.g.


Many years later, when he was experimenting on rabbits, he found the deadly virus that causes rabies.

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(c) Let’s see how much you have understood. Complete these sentences using the Simple Past or the Past Continuous forms of the verbs brackets.

(i) Louis Pasteur ______ in 1895. (die)

(ii) Pasteur knew that the mad wolf _______ from rabies. (suffer)

(iii) When I reached his house, he _______ lunch. (have)

(iv) I _______ last evening. (arrive)

(v) The boys ________ football when it suddenly began to rain. (play)

Ans:

(i) Louis Pasteur died in 1895.

(ii) Pasteur knew that the mad wolf was suffering from rabies.

(iii) When I reached his house, he was having lunch.

(iv) I arrived last evening.

(v) The boys were playing football when it suddenly began to rain.

8. Imagine you are the young boy who was bitten by the mad dog. You are telling your friends what happened when you were coming home from school. Fill in the gaps in the passage below with correct forms of the verbs to complete your story.

Yesterday I ____ _____ (return) from school alone. One the way I _____ (saw) a group of boys around a dog. The dog _______ (seem) to be mad, and the boys _______ (throw) stones at it. This _______ (make) the dog angry and frightened. The dog _______ (begin) to bark angrily. The boys _______ (find) this very funny and they ______ (hit) the dog with a stick. I _____ ______ (stand) nearby quietly. Suddenly the dog ______ (rush) at me and ______ (bite) me. I _______ (shout) to the boys to help me. But they ______ (run) away. The dog ______ (is) so angry that it ______ (will) not let go of my leg. Finally, three men from a nearby shop _______ (come) out and _______ (chase) the dog away.

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Ans: Yesterday I was returning from school alone. One the way I saw a group of boys around a dog. The dog seemed to be mad, and the boys threw stones at it. This made the dog angry and frightened. The dog began to bark angrily. The boys found this very funny and they hit the dog with a stick. I was standing nearby quietly. Suddenly the dog rushed at me and bit me. I shouted to the boys to help me. But they ran away. The dog was so angry that it would not let go of my leg. Finally, three men from a nearby shop came out and chased the dog away.

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