Question

1. Which one of the following is not a viral disease?
(a) Dengue
(b) AIDS
(c) Typhoid
(d) Influenza


2. Which one of the following is not a bacterial disease?
(a) Cholera
(b) Tuberculosis
(c) Anthrax
(d) Influenza


3. Which one of the following diseases is caused by protozoans?
(a) Malaria
(b) Influenza
(c) AIDS
(d) Cholera


4. Which of the following can make you ill if you come in contact with aninfected person?
(a) High blood pressure
(b) Genetic abnormalities
(c) Sneezing
(d) Blood cancer


5. Which one of the following causes kala-azar?
a) Ascaris
(b) Trypanosoma
(c) Leishmania
(d) Bacteria


6. Choose the wrong statement 
a) High blood pressure is caused by excessive weight and lack of exercise.
(b) Cancers can be caused by genetic abnormalities
(c) Peptic ulcers are caused by eating acidic food
(d) Acne in not caused by staphylococci


5. If you live in a overcrowded and poorly ventilated house, it is possible thatyou may suffer from which of the following diseases
(a) Cancer
(b) AIDS
(c) Air borne diseases


6. Vectors can be defined as
(a) animals carry the infecting agents from sick person to another healthy person
(b) microorganisms which cause many diseases
(c) infected person
(d) diseased plants

7. Following are a few definitions of osmosis Read carefully and select the correct definition 
(a) Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane
(b) Movement of solvent molecules from its higher concentration to lower concentration
(c) Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane
(d) Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane


8. Find out the false sentences 
(a) Golgi apparatus is involved with the formation of lysosomes
(b) Nucleus, mitochondria and plastid have DNA; hence they are able to make their own structural proteins
(c) Mitochondria is said to be the power house of the cell as ATP is generated in them.
(d) Cytoplasm is called as protoplasm

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Answer 1

1)=C.

2)=D.

3)=A.

4)=C.

5)=D.

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6)=>..

(b) Cancers can be caused by genetic abnormalities .

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5.)=>The diseases which are transmitted through contaminated air are known as airborne diseases. When the person lives in an overcrowded area which is poorly ventilated house, the person may suffer from breathing and airborne related diseases. The person may suffer from respiratory infections and disorders.

Thus, the correct answer is option A.

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6)=>Vectors are carriers or intermediate hosts for pathogens of the disease and therefore, transmit diseases between individuals. Mosquitoes act as vectors for transmission of dengue, malaria etc.

So, the correct answer is 'Animals that carry the infecting agents from an infected individual to another healthy individual.'

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7)=>Osmosis is the passive movement of water or any other solvent molecules from a region of higher water concentration to a region of lower water concentration through a semipermeable membrane. This brings both the solutions separated by the semipermeable membrane to the equilibrium.

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8)=>Option D is incorrect because, cytoplasm is not called as protoplasm but it is a part of protoplasm.

The protoplasm consists of cytoplasm, nucleus and the cell membrane.

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