Choose the best alternative Lipid stores are mainly present in (a) Liver (b) Adipose tissue (c) Brain (d) Muscles All the following statement about ketone bodies are true except; (a) Their synthesis increase in diabetes mellitus (b) They can be oxidized in the liver (c) They are synthesized in the mitochondria (d) They can deplete alkali reserve An enzyme required for the synthesis of ketone bodies as well as cholesterol is; (a) A cetyl CoA carboxylase (b) HMG CoA synthetase (c) HMG CoA reductase (d) HMG CoA lyase Acorvican formed from pyruvare can be used for the synthesis of all the following except; Net generation of energy on complete oxidation of palmitic acid is (a) 146 ATP equivalents (b) 129 ATP equivalents (c) 131 ATP equivalents (d) 148 ATP equivalents Oxidation of fatty acids occurs; (a)) In the matrix of the mitochondria (b) \( \ln \) the cytosol (c) On inner mitochondrial membrane (d) On the microsomes Glycerol is converted into glycerol-3-phosphate by (a) Glycerol kinase (b) Thiokinase (b) Glycerol-3-phosphate dehydrogenase (d) All of the above The following is required as a reductant in fatty acid synthesis; NADH (c) \( \mathrm{FADH}_{2} \) (d) \( \mathrm{FMNH}_{2} \) (a) VADPH (b) The following is a polyunsaturated fatty acid: (c) Palmitic acid (d). Palmitoleic acid (a) Linoleic acid (b) Meic acid A good source of polyunsaturated acid is; (a) Corn oil (b) Coconot oil Butter (d) Hydrogenated vegetable oils The number of carbon atoms in cholesterol is; (a) 17 (b) 19 All the following have 18 carbon atoms except; acid (c) Arachidonic acid (d) Stearic acid (a) Linoleic acid Sphingosine is present in: (a) Lecithin (b) Cephalin Neutral fats are esters of fatty acids and; (c) Glycerol (d) Cetyl alcohol (a) Cholesterol (c) Ceramide (d) Cardiolipin The nitrogenous base in lecithin is (a) Serine (b) ethanolamine 27 (d) 30 (b) Linolenic (d) Betaine (c) Choline
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The Deep Dive
Lipid stores are primarily found in adipose tissue, which serves as the body's major energy reservoir. Unlike the liver, which plays a role in lipid metabolism, adipose tissue is specialized for storing excess energy as fat, providing insulation and cushioning for vital organs. This special tissue is essential for regulating energy balance and maintaining overall metabolic health. When it comes to ketone bodies, they are an alternative energy source produced during states like fasting or prolonged exercise. An interesting tidbit is that while their synthesis increases during diabetes, they cannot be oxidized in the liver itself—this process occurs in peripheral tissues instead. Understanding this is crucial in comprehending how our bodies manage energy under various conditions!
