Exam 1.doc - Manaret eleman language schools Date:\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026 science department Prep.3:Question 1(A Choose

Exam 1.doc - Manaret eleman language schools...

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Manaret eleman language schools science department Date:………………………………………………. Prep.3 Question 1 : A) Choose the correct answer : ( /5 ( 1 …………………………- is located beneath the stomach and between the two arms of duodenum . a. Pituitary gland b. Thyroid gland c. Pancreas c. Parathyroid gland . 2 - Adenine base in DNA molecule paired with………………………..base . a. cytosine b. guanine c. thymine d. a & b 3 - According to Mendel's first law ,the hereditary factors …………..when gametes are formed . a. combine b. fuse c. segregate d. disappear 4 - The traits that don't transmit from a generation to another are the .…… a. acquired b. hereditary c. dominant d. recessive 5 - Acids secreted by the stomach helps in the digestion of ……………………… a. carbohydrates b. lipids c. proteins d. vitamins B- You have three similar cells, the electromotive force of each is 1.5 volt . Explain by using a diagram ,how you can connect them to obtain a-1.5 volt b- 3volt. c- 4.5 volt . C - Determine the oxidizing agent and the reducing agent in the following reaction : 1
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2Na + Cl 2 2 Na + + 2Cl - Na is the reducing agent Cl 2 is the oxidizing agent Question 2 : A) Write the scientific term : ( /5 ( 1 - A hormone which regulates the amount of calcium in bones .
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