Which biomolecule is correctly characteristed?
Q: Select all of the molecules that are made by dehydration synthesis. O peptides disaccharides…
A: Option 1,2,3,4 are correct. - dehydration synthesis is a chemical reaction where loss of water…
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Q: a cysteine on the surface of a protein has a pKa of 8.3 and a pH of 7.5. it will be approximately…
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Q: H,N NH2 H,N NH, он H,N но OH
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Q: Which of the following structures is a 20:2 ^A4,9 fatty acid? CH3CH2CH = CH(CH2)3CH = CH(CH2)10COOH…
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Q: Word Bank: A. Oligosaccharide B. Hydrophobic ahelix C. Glycolipid D. Phospholipid E. Integral…
A: The cellular membrane is a membrane that isolates all cells' interiors from the outside world.
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- A phospholipid ________.a. has both polar and nonpolar regionsb. is made up of a triglyceride bonded to aphosphate groupc. is a building block of ATPd. can donate both cations and anions in solutionLipoprotein particles are relatively large, sphericalclumps of protein and lipid molecules (see Figure 3.18)that circulate in the blood of mammals. They are likesuitcases that move cholesterol, fatty acid remnants, triglycerides, and phospholipids from one place to anotherin the body. Given what you know about the solubilityof lipids in water, which types of lipids would you predict to be on the outside of a lipoprotein clump, bathedin the water-based fluid portion of blood?At the physiological pH in the human body, amino acids are typically in the zwitterionic form. What is a zwitterion? A. A molecule that has parts that are charged but has an overall neutral charge. B. A molecule that has parts that are neutral but has an overall positive or negative charge. C. A molecule that has is charged at physiological pH. D. A molecule that has more than 1 charged ion.
- The acroonym 'OIL RIG' in reference to redox reactioons is ment to remind us that; a) Oligomers Induce Ligases, Reactants Induce Glycolysis b) Organized in Lipids, Reacted in Golgi apparatus c) Oxidation Is Loss of electrons, Reduction Is gain of electronsElectronegativity is the ability for an atom or molecule to attract electrons (see chapter 2). Considering the components of theelectron-transport chain, with protein I being the beginning of the chain and protein IV the end of the chain, which end has thehigher electronegativity? Explain your answeA molecule that donates electrons becomes _________, and the one that accepts the electrons becomes ________ . a. reduced; oxidized c. oxidized; reduced b. ionic; electrified d. electrified; ionic
- Suggest the mechanism(s) by which each of the following substances is transported across cell membranes: a. CO2 b. Glucose c. C1– d. K+ e. Fat molecules f. α-tocopherolIn contrast to other fatty acids, essential fatty acidsa. are always saturated fats.b. cannot be synthesized by the organism and are necessary forsurvival.c. can act as building blocks for large, more complex macromolecules.d. are the simplest form of lipids found in plant cells.e. are structural components of plasma membranes.What chemical property of phospholipids is key to the formation ofthe cell membrane?a. The positively charged nitrogen atomb. The covalent bond between the phosphate and the glycerolc. The kink in the fatty acid taild. The hydrophilic head and hydrophobic tails
- Which of the following refer/s to lipid movement in membranes? I. transverse diffusion II. phospholipid fatty acyl chains bending III. lipids exchange places within one monolayer IV. lipids rotating within their original location I, II, III only I, II, III, IV I, III, IV only II, III, IV onlyMatch the molecules with the best description._____wax a. protein primary structure_____starch b. an energy carrier_____triglyceride c. water-repellent secretions_____ DNA d. richest energy source____polypeptide e. sugar storage in plants_____ATP f. sugar storage in____glycogen animal muscle g. carries heritable informationPositively charged molecules are often more easily endocytosed by cells than negatively charged molecules. Which of these BEST explains this observation? A. The hydrocarbon tails of membrane lipids are hydrophilic. B. The hydrocarbon tails of membrane lipids are hydrophobic. C. The phosphate group of membrane lipids are positively charged. D. The phosphate group of membrane lipids are negatively charged.