SY 2017/ nd Final Term Revision. Student s Name: Grade: 12 B & C. Subject: Chemistry. Teacher Signature

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1 SY 2017/ nd Final Term Revision Student s Name: Grade: 12 B & C Subject: Chemistry Teacher Signature

2 Revision Sheet Chemistry Gr 12B Ch Organic reaction 1-Choose correct answer. 1) Cellulose is a- Protein b- b-lipid c- c-carbohydrates d- d-vitamin 2) Carbohydrates are molecules of a- (H,C,O) b- b-( C,H,N) c- c-(c,h) d- d- ( C,O) 3) The general formula of carbohydrates is a. Cm(H2O)n b.cn(h2o)n c. CnHn) d.cn(h2o) 4) Glucose also called a- Starch b-fructose c-lactose d-dextrose

3 5) A common type of addition reactions a-oxidation b- reduction c-hydrogenation d- polymerization 6) In hydrogenation,a hydrogen atoms are added to a- Oxygen b- b- hydrogen c- c- unsaturated molecules d- -OH group 7) Condensation polymers are usually copolymer with a- One monomer b- b- two monomer c- c-three monomers d- five monomer 8) Copolymer nylon 66 contains a-2 carbon atoms b- 3 carbon atoms c-4 carbon atoms d-6 carbon atoms

4 9) Polysters are formed from a-di alcohol and diamine b-di alcohol and 2 molecule H2O c-dicarboxylic acid and di alcohol d-carbon and hydrogen 10)One of the following is amino acid a-ethanoic acid b-sulforric acid c-carbonic acid d-valine 11) When 2 amino acid react with each other a bond formed and this bond called a-ionic bond b- covalent c-hydrogen bond d-peptide 12)The main component of hair is a- Insulin

5 b- b-homoglobin c- c-keratin d- d- zinc and copper 13)Sickle-cell anemia results from malformed or missing a-protein b-lipids c-carbohydrates d- minerals 14-the biological function of protein storage a-support b-storage amino acid c-movement d-transport of substances 15- Which one of the elements hemoglobin transport s in the blood a- H2 b- b- CO2 c- c- N2 d- d-o2 16)The element which is needed for bone growth a-oxygen b- phosphorus c-sulfur d- chlorine 16) Insulin is a small protein of (x) number of amino acid, X is a- 51 b- 50 c-49 d-52

6 17)Most enzymes are soluble in a-oil b-milk c-alcohol d- water 18) Catalyst speed up the reaction by a- Lowering activation energy b- increasing activation energy c- lowering the energy of reactants d-increasing the concentration of product 19)In the lungs carbonic anhydrase break down carbonic acid into a- CO2 and H2 b- O2 and H2 c- CO2 and H2O d- H2O ( vapor) 20) A protein including enzymes are affected by change in a-volume b-concentration c-temperature d-pressure 21-Which one of following is enzyme and found in stomach a-pepsin b-insulin c- CO2 d-n2

7 22) Enzyme trypsin becomes active in a medium of ph between a- 7-8 b- 7only c- 0-2 d ) Triglycerides are formed by condensation reaction in which a- One fatty acid bond to one glycerol b- - two fatty acid bond to one glycerol c- -three fatty acid bond to one glycerol d- Three fatty acid bond to three glycerol 24-Butter is a-vitamin b-amino acid c-carbohydrates d- fats 25) The general formula of sucrose is a-c2h4o2 b- C6H12O6 c-c12h22o11 d-c6h6o6 Q2- List four types of organic reaction. Q3- Fill in the blanks are large molecules,made of many small units joined to each other through organic reaction.

8 is a simple sugar that is the basic sub unit of a carbohydrates is a chemical reaction between water and another substance to form 2 or more new substances fatty acids consists of along nonpolar hydrocarbon tail and a carboxylic acid functional group at the head is a reaction in which 2 molecules or parts of the same molecules combines are organic molecules that contain 2 functional group, a basic ( -NH2) and acidic ( -COOH). Carboxylic acid. Q3- Define. 1)Nucleic acid

9 2)Carbohydrates 3) Saponification 4) denaturation 5)elimination reaction

10 6) DNA replication Q4)Write the function of the following protein 1)contractile 2)defensive 3)receptor

11 4)hormanal Q5) Complete the following reaction 1- Glucose + fructose Fat +NaOH Monomer + monomer Alcohol + H2SO4 + heat Q6) Write true or false. 1- A polymer made 2 or more different monomer is copolymer. 2- A condensation polymer is a polymer formed by condensation reaction.

12 3- Enzymes are protein. 4- Carbohydrates are molecules of hydrogen and carbon only. 5- Monosachrides are typically sweet tasting, white solid at room temperature. 6- Lactose is amonosachride sugar. 7- Glucose is adisachride sugar. 8- A lipid is a type of biochemical that doesn t dissolve in water. 9- Fats and oils make up the most common group of lipids in our diet. 10- Amino acids contain only one functional group (-NH2) 11-Cancer resulted by amutation caused by incorrect Sequencing. Q7) Describe 2 functions of carbohydrates in living system

13 Q8- What is the different between saponifiable and non saponifiable lipids Q9- Write one use for 1-poly vinyl chloride (PVC) 2-Poly ethylene (HDPE) 3-Polymers 4-Polysters

14 Q10- Write the reaction for polymerization of vinyl chloride to form poly viny chloride ( PVC) Q11- What element do amino acids and protein have in common with carbohydrates and lipids Q12-What is the difference between amino acids and protein Q13- What is the difference between ATP ( adenosine triphosphate and ADP ( adenosine diphosphate )

15 Q14-What is the difference between heterotrophs and autotrophs