Multiple-Choice Questions: Read each question carefully and select the best answer. 1. Which one of the following would convert a liquid fat to a solid fat: A. add heat C. add hydrogen (hydrogenation) D. add kinks in tails B. unsaturate it _2. The main difference between saturated and unsaturated fatty acids is A. the number of carbons. D. that one is absent from the presence of keto groups. C. the presence of double bonds. В. phospholipids. _3. The basic backbone of most fat or oil molecules is an alcohol called: A. Glycerol B. Glycerin C. Glyceric acid D. Glycogen _4. Fat is important as a storage molecule. It can provide protection to vital organs as well as warmth. As what form are lipids most commonly stored? A. Ceramide C. Chylomicrons B. Triacylglycerol D. Cholesterol _5. Which of the following is false about lipids? A. They are either strongly hydrophobic or amphipathic B. They are more soluble in water C. Extraction of lipids from tissues require organic solvents D. They are insoluble in water _6. Which of the following is NOT a phospholipid? A. Lecithin C. Cephalin B. Cardiolipin D. Sphingomyelin _7. Which of the following FA has the lowest melting point? A. Stearic acid C. Docosahexanoic acid B. Palmitic acid D. Linoleic acid _8. What are the components of a triglyceride molecule? A. One glycerol and one cholesterol C. One glycerol and two fatty acids B. One cholesterol and two fatty D. One glycerol and three fatty acids acids _9. The cholesterol molecule is: A. Benzene derivative C. Steroid В. Quinoline derivative D. Straight chain acid 10. Sphingomyelins contain a complex amino alcohol named as: A. Serine C. Sphingosine D. Glycol B. Lysolecithin

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Nucleotides

It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). 

Nucleic Acids

Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.