Identify each cell structures or organelle from its description below:
Can bud of vesicle from which form Golgi apparatus.

Identify each cell structures or organelle from its description below: Manufactures ribosome.

Identify each cell structures or organelle from its description below: Selective permeable.

Identify each cell structures or organelle from its description below: Carrys out photosynthesis.

Identify each cell structures or organelle from its description below: Manufacture ATP in animal and plant cells.

Choose the correct alternative from those given below each question: Which of the following is quadratic equation?

Use your brain power! Can you tell : The names of four fatty acids separated from vegetable oils are given in the table. Identify the number of carbon - carbon double bonds from their structure and molecular formula from the below fatty acids which one when reacts with iodine will make the colour of iodine disappear.

Choose the correct alternative from those given below each question: Which of the following equations has roots-2 and 7 ?

Choose the correct alternative from those given below each question: Which of the following are the terms of an A.P.?

Apparatus: Bars of stainless steel, aluminium and copper, a candle, a burner, pins, etc. : Procedure: Take stainless steel (or iron), copper and aluminium bars, each about 30 cm long and having the same shape. Apply wax spots with the help of candle at a distance of 2 cm from each other on all the three bars. Stick a pin in each of these spots so that it is upright. Now insert the ends of all three bars into a flame at the same time. for a while. What do you see? From which bar do the pins start falling first? Why?