Note: These questions was taken from HummingBird Science Olympiad Class 8 Preparatory Booklet which I took part in 2018 ... Without Further ado, Here is It... Note: There are 17 Units in the Olympiad! The Questions you see here are chosen randomly. ~~~~~ 1. ________ is not present in an animal cell. (a) Cell membrane (b) Cell wall (c) Mitochondria (d) Nucleus 2. ________ is also known as the power house of the cell. (a) Centrosome (b) Cytoplasm (c) Mitochondria (d) Nucleus 3. From what is the cell wall made up of? (a) Fats (b) Proteins (c)Cellulose (d)Mitochondria   4. _______ is the longest cell. (a) The paramecium (b)The muscle cell (c)Skin cells (d)Nerve cells 5.______ is the negative electrode in a dry cell. (a)Carbon rod (b)Manganese dioxide (c)Zinc container (d)none of these 6. _____ is the positive electrode. (a)Anode (b)Cathode (c)Any of these (d)Both of these 7. Which of the following is used to prevent rusting of iron by electroplating?  (a)Nickel (b)Zinc (c)Co...