Biology
1) Why the plasma membrane is called a selectively permeable membrane?. 02
2) Which organelle is known as powerhouse of cell and why?. 02
3) What is acute and chronic disease, explain with one example. 02
4) Explain in detail means of spread. 02
5) Difference between animal cell and plan cell. 02
6) Comment in details on organ specific and tissue specific manifestation. 02
7) What is mean by Principle of prevention, explain in detail. 03
8) Draw well labelled diagram of Animal cell and Plant cell. 05
Physics
1) Define uniform circular motion. Give two examples. 02
2) What is odometer and speedometer? 02
3) Define velocity and acceleration. State their S. I. and C.G.S. unit. 03
4) State any two points of difference between distance and displacement. 02
5) A motor car moving along a straight line with uniform velocity of 90 km/h, its velocity
slowed down to 18 km/h in 4 s. Calculate its acceleration. 02
6) An athlete c omplete one round of a circular track of radius 350 m in 1 minute. 02
What will be the distance covered and displacement at the end of 600s.
7) State the equation of motion with meaning of each symbol. 02
Chemistry
1) Explain the Properties of suspension 02
2) How will you justify that clean air is a mixture and not a compound ? 02
3) State the application of colloid 02
4) Distinguish between Homogeneous and Heterogeneous mixture 02
5) Write the characteristic of metals . 02
6) Differentiate between Physical and chemical changes. 02
7) Distinguish between saturated and unsaturated solutions. 03
Answers
Answer:
it is because it is the outer part of the cell
Answer:
1)The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells.
2) Mitochondria know as power house of cell because they responsible for formation of ATP.
3)Acute conditions are severe and sudden in onset. This could describe anything from a broken bone to an asthma attack. A chronic condition, by contrast is a long-developing syndrome, such as osteoporosis or asthma.
4)Diseases Spread. Infectious diseases can spread in a variety of ways: through the air, from direct or indirect contact with another person, soiled objects, skin or mucous membrane, saliva, urine, blood and body secretions, through sexual contact, and through contaminated food and water.
5)A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane