Unit 2 class 5th science
1 What are microorganisms?
Ans The organism which cannot seen with naked eye. They are very small. Their body consists of only one cell.
2 Write major groups of microorganisms?
Ans Microorganism include three major groups.1.all viruses 2.all bacteria3.some fungi
3 What are viruses?
Ans The smallest particles that cause infection are called viruses.
4 How viruses is different from all other living organisms.
Ans A virus does not have a cell in its body.
5 What is host?
Ans The organism in which a virus reproduce is called host.
6 How viruses named?
Ans Viruses are named according to the diseases caused by them e.g. Common cold virus, polio virus,etc
7 Viruses are always harmful for our health.give example.
Ans Malaria is caused by virus.also dengue is caused by virus.
8 How many types of microorganism are present on earth?
Ans There are 2-3 billion types of microorganisms are present on the earth .scientist know less then 1% of these types.
9 How bacteria move?
Ans Bacteria move with the help flagella.
10 What is the size of bacteria?
Ans Bacteria vary in size but all of them are extremely small. A bacterium may be 0.001mm in length.
11 In how many shapes bacteria are present?
Ans Many bacteria are rod shape some are round or oval and still many are spiral.
12 What is cell wall?
Ans The outer boundary of the cells of all bacteria is called cell wall.
13 What is difference between an-aerobic and aerobic bacteria?
Ans Some bacteria do not need oxygen for life they are called an-aerobic bacteria. The bacteria which need oxygen are called aerobic.
14 What is the function of decomposer bacteria?
Ans The decomposer bacteria attack food and decompose it.
15 Many bacteria are useful for us.give examples.
Ans Yogurt is made by bacteria. They also decompose dead animals.
16 What is hyphea?
Ans Most fungi are made up of very small thread –like structures called hyphea.the hyphea are in the form of branching network.
17 What is yeast?
Ans Yeast is a type of funges.it is used to make many bakery products like bread ,cake etc.
18 Name some types of fungi.
Ans Mushrooms, toadstool, yeast and mould.
19 Where do the fungi grow?
Ans Fungi grow on dead material.
20 If we keep a piece of bread in open space it get mouldy.why?
Ans Due to fungus.
21 What are germs?
Ans The diseases causing micro-organisms are called germs.
22 What are vaccines?
Ans Vaccines are used for making strong defencesystem in our bodies against diseases.
23 Write benefits of microorganisms?
Ans We use bacteria for making food products. Some microorganisms use for making vaccines. Many bacteria are used for making different medicines.
24 What is infection?
Ans When germs inter in our body, they attack the cells and destroy them. It results in disease. This condition is called infection.
25 Write name of some infections caused by virus?
Ans Common cold influenza, measles
26 Write name of common diseases caused by bacteria?
Ans Cholera ,typhoid,strepthroat
27 Which microorganism causes athlete’s foot?
Ans Fungi.
28 Which microorganism causes pneumonia?
Ans Viruse,bacteria or fungi
29 Write symptoms of pneumonia and how it spreads?
Ans Painful cough, fever,difficulty in breathing. It spreads through contaminated air.
30 How infections are transmitted?
Ans Some germs enter through undamaged skin. Many germs enter the body through mouth.respiratery system is also a major entry point for germs.
31 What is an antibiotic?
Ans An antibiotic is drug which kills bacteria but does not damages your body cells.
32 Why you should wash your hands after using toilet?
Ans To avoid being infected by germs.
33 Write the name of microorganism used in the production of yogurt.
Ans Yogurt is made with the help of a kind of bacteria.
34 How germs can enter our body?
Ans They can enter our body through mouth, nose or wounded skin.
35 Which type of cell kill the germs?
Ans White blood cells kill the germs.
36 How we can protect from diseases like flu cold cough?
Ans We can avoid these diseases if we crowded and humid places.
37 How we kill germs present in milk?
Ans Very high temperature kills the germs. When we boil milk ,we kill all the germs present in it.
Mcqs unit 2 class 5th
1)micro means
Ans small
2)the body of microorganism is consists of
Ans one cell
3)it is thought that there are ………..types of micro organim on the earth
Ans 2-3 billion
4) all of the following are micro organisms except 1)virus 2)bacteria 3)yeast 4) bracket funji
Ans bracket funji
5) how many major groups of micro organisms
Ans three
6) the smallest microorganism that causes infection is called
Ans virus
7) the organisms in which a virus reproduce s is called
Ans host
8) the diseases caused by viruses are a)common cold b) measles c) polio d)all
Ans all
9)the outer boundary of the cell s of all bacteria is
Ans cell wall
10) in bacteria cytoplasm is surrounded by
Ans cell membrane
11) all the organisms have nucleus except
Ans bacteria
12)in bacteria chromosomes are present in
Ans cytoplasm
13)bacteria has ……….for movement
Ans flagella
14) bacteria act as decomposers because they
Ans break down dead bodies of plants and animals
15)funji are composed of thread like structures called
Ans hyphae
16) the animals present in group of funji are a) mushroom b) toadstools c)yeast d)all
Ans all
17) …………….grow on dead material and decomposed it
Ans funji
18) bacteria double their numbers after every
Ans 20 minutes
19) the bacteria which need oxygen are called
Ans aerobic bacteria
20)fruits and vegetables are spoiled when not preserved in fridge. This is just because of
Ans bacteria
21)which microorganism is used in bakery items?
ans yeast
22)which one is not a source of transmission of germs?
Ans boiled water
23)identify the microorganism whose body is composed of thread like structure
Ans yeast
24) the microorganism used in making bread and cake is
Ans yeast
25)the germs of cholera enters in human body through
Ans mouth
26) extremely small organisms are called
Ans microorganisms
27)one of the following is not a microorganisms a)bacteria b) ant c) virus d) algae
Ans ant
28)the organism whose body is not made of cells
ans virus
29) length of bacteria may be
Ans 0.001mm
30)yeast is a type of
ans funji
31) which organisms are responsible for food spoilage
Ans bacteria and funji
32) symptoms of influenza are
Ans cough, runny nose, itchy eyes and throat
33)symptoms of step throat are
Ans sore throat, fever, headache
34)bacteria use flagella for
Ans movement
35) when germs enter our body they attack body cells and destroy them. This is called
Ans infection
36) loose motion are the symptoms of
Ans cholera
37) when a patient sneezes or coughs common cold viruses trvel at a distance of
Ans three meters
38)our mouth is under attack all the time from
Ans bacteria
39)cheese and many bakery products are made by
Ans fungus yeast
40) when germs enter in our body they attack on
Ans different tissues of body
41) dengue is a
Ans viral infaction
42)microorganism break the large compounds present in dead bodies into
Ans simpler substances
43) ………..is made with the help of bacteria
Ans yogurt
44) which organism give us antibiotics
Ans bact4eria
45)which gas is produced by yeast in the flour dough?
Ans carbon dioxide
46) many diseases in living things are caused by
Ans microorganisms
47)germs can enter in our body through a)mouth b) nose c) wound skin d) all
Ans all
48)the infection of pneumonia spread through
Ans contaminated air
49)to prevent the entry of germs in our body we
Ans wash hands
50) in our body which system is a major entry point for germs?
Ans respiratory system
51) our defense system take action to
Ans kill germs
52) special blood cells that kill the germs called
Ans white blood cells
53) germs are killed at
Ans high temperature
54)the germs present in air can cause
Ans cold, cough, flu
1 What are microorganisms?
Ans The organism which cannot seen with naked eye. They are very small. Their body consists of only one cell.
2 Write major groups of microorganisms?
Ans Microorganism include three major groups.1.all viruses 2.all bacteria3.some fungi
3 What are viruses?
Ans The smallest particles that cause infection are called viruses.
4 How viruses is different from all other living organisms.
Ans A virus does not have a cell in its body.
5 What is host?
Ans The organism in which a virus reproduce is called host.
6 How viruses named?
Ans Viruses are named according to the diseases caused by them e.g. Common cold virus, polio virus,etc
7 Viruses are always harmful for our health.give example.
Ans Malaria is caused by virus.also dengue is caused by virus.
8 How many types of microorganism are present on earth?
Ans There are 2-3 billion types of microorganisms are present on the earth .scientist know less then 1% of these types.
9 How bacteria move?
Ans Bacteria move with the help flagella.
10 What is the size of bacteria?
Ans Bacteria vary in size but all of them are extremely small. A bacterium may be 0.001mm in length.
11 In how many shapes bacteria are present?
Ans Many bacteria are rod shape some are round or oval and still many are spiral.
12 What is cell wall?
Ans The outer boundary of the cells of all bacteria is called cell wall.
13 What is difference between an-aerobic and aerobic bacteria?
Ans Some bacteria do not need oxygen for life they are called an-aerobic bacteria. The bacteria which need oxygen are called aerobic.
14 What is the function of decomposer bacteria?
Ans The decomposer bacteria attack food and decompose it.
15 Many bacteria are useful for us.give examples.
Ans Yogurt is made by bacteria. They also decompose dead animals.
16 What is hyphea?
Ans Most fungi are made up of very small thread –like structures called hyphea.the hyphea are in the form of branching network.
17 What is yeast?
Ans Yeast is a type of funges.it is used to make many bakery products like bread ,cake etc.
18 Name some types of fungi.
Ans Mushrooms, toadstool, yeast and mould.
19 Where do the fungi grow?
Ans Fungi grow on dead material.
20 If we keep a piece of bread in open space it get mouldy.why?
Ans Due to fungus.
21 What are germs?
Ans The diseases causing micro-organisms are called germs.
22 What are vaccines?
Ans Vaccines are used for making strong defencesystem in our bodies against diseases.
23 Write benefits of microorganisms?
Ans We use bacteria for making food products. Some microorganisms use for making vaccines. Many bacteria are used for making different medicines.
24 What is infection?
Ans When germs inter in our body, they attack the cells and destroy them. It results in disease. This condition is called infection.
25 Write name of some infections caused by virus?
Ans Common cold influenza, measles
26 Write name of common diseases caused by bacteria?
Ans Cholera ,typhoid,strepthroat
27 Which microorganism causes athlete’s foot?
Ans Fungi.
28 Which microorganism causes pneumonia?
Ans Viruse,bacteria or fungi
29 Write symptoms of pneumonia and how it spreads?
Ans Painful cough, fever,difficulty in breathing. It spreads through contaminated air.
30 How infections are transmitted?
Ans Some germs enter through undamaged skin. Many germs enter the body through mouth.respiratery system is also a major entry point for germs.
31 What is an antibiotic?
Ans An antibiotic is drug which kills bacteria but does not damages your body cells.
32 Why you should wash your hands after using toilet?
Ans To avoid being infected by germs.
33 Write the name of microorganism used in the production of yogurt.
Ans Yogurt is made with the help of a kind of bacteria.
34 How germs can enter our body?
Ans They can enter our body through mouth, nose or wounded skin.
35 Which type of cell kill the germs?
Ans White blood cells kill the germs.
36 How we can protect from diseases like flu cold cough?
Ans We can avoid these diseases if we crowded and humid places.
37 How we kill germs present in milk?
Ans Very high temperature kills the germs. When we boil milk ,we kill all the germs present in it.
Mcqs unit 2 class 5th
1)micro means
Ans small
2)the body of microorganism is consists of
Ans one cell
3)it is thought that there are ………..types of micro organim on the earth
Ans 2-3 billion
4) all of the following are micro organisms except 1)virus 2)bacteria 3)yeast 4) bracket funji
Ans bracket funji
5) how many major groups of micro organisms
Ans three
6) the smallest microorganism that causes infection is called
Ans virus
7) the organisms in which a virus reproduce s is called
Ans host
8) the diseases caused by viruses are a)common cold b) measles c) polio d)all
Ans all
9)the outer boundary of the cell s of all bacteria is
Ans cell wall
10) in bacteria cytoplasm is surrounded by
Ans cell membrane
11) all the organisms have nucleus except
Ans bacteria
12)in bacteria chromosomes are present in
Ans cytoplasm
13)bacteria has ……….for movement
Ans flagella
14) bacteria act as decomposers because they
Ans break down dead bodies of plants and animals
15)funji are composed of thread like structures called
Ans hyphae
16) the animals present in group of funji are a) mushroom b) toadstools c)yeast d)all
Ans all
17) …………….grow on dead material and decomposed it
Ans funji
18) bacteria double their numbers after every
Ans 20 minutes
19) the bacteria which need oxygen are called
Ans aerobic bacteria
20)fruits and vegetables are spoiled when not preserved in fridge. This is just because of
Ans bacteria
21)which microorganism is used in bakery items?
ans yeast
22)which one is not a source of transmission of germs?
Ans boiled water
23)identify the microorganism whose body is composed of thread like structure
Ans yeast
24) the microorganism used in making bread and cake is
Ans yeast
25)the germs of cholera enters in human body through
Ans mouth
26) extremely small organisms are called
Ans microorganisms
27)one of the following is not a microorganisms a)bacteria b) ant c) virus d) algae
Ans ant
28)the organism whose body is not made of cells
ans virus
29) length of bacteria may be
Ans 0.001mm
30)yeast is a type of
ans funji
31) which organisms are responsible for food spoilage
Ans bacteria and funji
32) symptoms of influenza are
Ans cough, runny nose, itchy eyes and throat
33)symptoms of step throat are
Ans sore throat, fever, headache
34)bacteria use flagella for
Ans movement
35) when germs enter our body they attack body cells and destroy them. This is called
Ans infection
36) loose motion are the symptoms of
Ans cholera
37) when a patient sneezes or coughs common cold viruses trvel at a distance of
Ans three meters
38)our mouth is under attack all the time from
Ans bacteria
39)cheese and many bakery products are made by
Ans fungus yeast
40) when germs enter in our body they attack on
Ans different tissues of body
41) dengue is a
Ans viral infaction
42)microorganism break the large compounds present in dead bodies into
Ans simpler substances
43) ………..is made with the help of bacteria
Ans yogurt
44) which organism give us antibiotics
Ans bact4eria
45)which gas is produced by yeast in the flour dough?
Ans carbon dioxide
46) many diseases in living things are caused by
Ans microorganisms
47)germs can enter in our body through a)mouth b) nose c) wound skin d) all
Ans all
48)the infection of pneumonia spread through
Ans contaminated air
49)to prevent the entry of germs in our body we
Ans wash hands
50) in our body which system is a major entry point for germs?
Ans respiratory system
51) our defense system take action to
Ans kill germs
52) special blood cells that kill the germs called
Ans white blood cells
53) germs are killed at
Ans high temperature
54)the germs present in air can cause
Ans cold, cough, flu
WRITTEN BY NARGIS PARVEEN
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