10) Note: ethylene glycol is in xs. 11) CHO HOCH CH OH H'.A 1. LiAlH4 2. HO 123 12) NaOH, H₂O. A 13) NH2 1. LIAIH4 2. water 3. CH3COCI
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- Which of the following is/are derived from isoprene? (Select all that apply!) __ A __ B __ C __ D __ E. None of these5. Match the figure and the letter: NH2 -NH2 H2C P CH2 дарственный pea ОН ОН ÓH ÓH 2 2 Coenzyme NAD * composition: A. Adenyl nucleotide. B. Nicotinamide coenzyme. C. Adenine. D. Ribose. E. Nicotinamide. O- орситет17. Name the type of biomolecules shown below:
- 1. Identify the encircled functional group (hydroxyl, carbonyl, amino, carboxyl). HO HO a) c) =6 H3C НО g H3C eo HU H3C HQ S penicillin Qo O pyruvate CH CH OH Cholesterol Epinephrine CH3 NH O N CH3 CH3 b) f d) CH3 CH₂ CH₂ CH3 CH CH₂ CH CH3 OH NH₂ H H-C-OH HO-C-H H-C-OH H-C-OH CH₂OHWhat are the chemical equations?8. The brick red color formed in a positive result of Benedict's test comes from A. the oxidation of copper ions B. the reduction of copper ion C. the reduction of carbonyl group D. the oxidation of carboxyl group E. the breakdown of glycosidic linkage 9. The following molecule is a но H Н-С—N — С H H H H-N-C -C-0-P-0-C -H H H H H A. triacylglycerol B. steroid hormone C. phospholipid D. o-6 fatty acid E. cholesterol 10. Which of the following statements about nucleic acid is INCORRECT? A. Coenzyme A is a protein, not nucleic acid B. NAD is an example of nucleic acid C. Adenine base is the same in ribonucleotide and deoxyribonucleotide D. Helix is an example of the secondary structure of nucleic acid E. Hydrogen bond can be found in DNA 11. The nucleoside consists of a D-deoxyribose and a cytosine base is called A. cytidine B. deoxycytidine C. deoxycytidylate D. deoxyribosylcytosine E. deoxyribosylcytidine
- what does this picture indicate？why is it important？can someone explain pleaseWhich of the following substances aren't phenolics? a. lignin b. isoflavones c. isoflavones d. alkaloids e. anthocyaninsIn the biosynthesis of heme, ring cyclization, isomerization, and decarboxylation reactions take place. Identify the potential intermediates and show the electron flow in the following diagram. HO,C R1 HO2C- -R2 NH HN- но- NH HN- HO2C R R2 unstable intermediate Uro'gen II HO2C Me Me NH HN- -CO2H HN NH Me Me HO2C CO2H Coproporphyrinogen II
- w i 1) Destruction of the ozone layer takes place when its component ozone (03) is converted O3 + 0202 into oxygen gas (O2) as shown by the following chemical equation. Although degradation of O3 happens naturally, there are some man-made substances that cause this process to take pla ce at a rate which is harmful to the environment. One such substance is chlorofluorocarbon or CFC. In the presence of ultraviolet (UV) radiation, a de chlorine (Cl) atom from CFC reacts with O3 and converts it to 02 at a faster rate. This is Cl + O3 → Clo + O2 Clo + 0- Cl + O2 shown by the 2 equations below. In this process, the chlorine atom acts as 2) Pepsin is an enzyme present in gastric juice. In the stomach, it catalyzes the breaking ! down of proteins into shorter polypeptides. Therefore, proteins are of pepsin. the 3) The unstable compound that is formed when the disaccharide maltose binds with the active site of the enzyme maltase is called 4) The binding of ATP with the enzyme pyruvate kinase…Which of the following does NOT contain 1,4 glycosidic linkage? CH,OH CH,OH CH2OH HO. CHOH CH2OH Q. OH он он но OH CHOH OH но OH O. O OH CH2OH он он OH OH OH он OH он A OH B. OA3. Identify the oxidizing and reducing agent from the following a) MnQ, + 4AF 3Mn+ b) 2CUSO, + S0,+ 2KB1 + 2H02CUBR +2H SO, + K,SO, 2A1 Q: derlined atoms (1x3=3)
