Answer: A) Ribosomes Explanation: Ribosomes are present in prokaryotic cells. These are organelles which consist of two subunits. They are present in both Eukaryotic and Prokaryotic cells. They are made up of RNA and proteins and present in the cytoplasm and on the membranes and are involved in protein synthesis.

Answer: C) 20 Explanation: We know that  40% = 40100 = 25⇒25 x 244 x ? = 48? = 48 x 5 x 42 x 24 = 20

Answer: A) appositional growth Explanation:

Answer: C) 1871 Explanation: In Germany, Kaiser means 'Emperor'. On 18th January, 1871 Wilhelm I was declared as Kaiser of Germany.

Answer: A) It is insoluble in ether and other Non-polar solvents Explanation: Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations Na+ and hydroxide anions OH−. Properties: 1. It is highly soluble in water, and readily absorbs moisture and carbon dioxide from the air. 2. NaOH is insoluble in ether and other non-polar solvents. 3. It is an odorless compound.   Uses: Sodium hydroxide is used in many industries: in the manufacture of pulp and paper, textiles, drinking water, soaps and detergents, and as a drain cleaner.

Answer: A) Vitamins B & C Explanation: Vitamins are essential nutrients found in foods. They perform specific and vital functions in a variety of body systems, and are crucial for maintaining optimal health.   The two different types of vitamins are fat-soluble vitamins and water-soluble vitamins.   Fat-soluble vitamins :  Vitamins A, D, E and K — dissolve in fat before they are absorbed in the bloodstream to carry out their functions. Excesses of these vitamins are stored in the liver, and are not needed every day in the diet.   Water-soluble vitamins : Vitamins dissolve in water and are not stored by the body. Since they are eliminated in urine, we require a continuous daily supply in our diet. The water-soluble vitamins include the vitamin B-complex group and vitamin C.   Water-soluble vitamins are easily destroyed or washed out during food storage or preparation.

Answer: B) 3 Explanation: By observing the above pattern Figure (3) will complete the matrix.

Answer: B) human body Explanation: Enzymes play an essential role in each living cell of our body. Enzymes are globular proteins that control biological reactions. These are of two types. 1. Intracellular enzymes 2. Extracellular enzymes   Intracellular enzymes are found inside the cell. Extracellular enzymes act outside the cell.   Enzymes are produced by exocrine glands. Digestive enzymes of diverse specificities are secreted by the salivary glands, stomach, pancreas, and the small intestine.