Q7 of 360 Page 114


Label X and Y.


(b) What is the function of X?


(c) What is the composition of Y?


(d) Identify the above diagram and what is its common name?

(a) X is Cristae and Y is matrix.

(b) Cristae create a large surface area for ATP-generating chemical reactions.


(c) The mitochondrial matrix contains lipids, proteins, circular DNA and RNA.


(d) Mitochondrion. Its common name is power house of the cell.


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5


(a) Identify A and B-cells.


(b) What will happen if B-cells are kept in hypotonic solution.


(c) What will happen if A cells are kept in hypertonic solution?

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What will happen if

(a) Excess amount of fertilizer is added to a green lawn?


(b) Salt is added to cut pieces of raw mango.

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(a) Label W, X, Y, and Z.


(b) Which is the covering membrane of X known as?


(c) Which of them contain hydrolytic enzymes?


(d) Which one of them takes part in storage modification and packaging of various chemicals?

 9

Name the phenomenon which helps fresh water unicellular organisms (e.g. Amoeba) continuously gain water in their bodies. Also, name the mechanisms by which these organisms throw out excess of water from their bodies.

(b) Give at least two examples in plants where similar phenomenon in used to gain water.