The mechanism of branching in starch and glycogen results in an increase in the proportion of O Reducing ends. Non-reducing Beta- Alpha-
Q: Starch is a polymer of: fructose maltose O galactose glucose O none
A: Carbohydrates are the macromolecules that are made o hydrogen, carbon and oxygen atoms.…
Q: Structural polysaccharides typically (a) have extensive hydrogen bonding between adjacent molecules…
A: Structural polysaccharides are the polysaccharides that perform structural functions.…
Q: Which of the following is a property of both D-altrose and D-talose O They are found in sucrose.…
A: Carbohydrates are the biomolecules that consists of monosacharides and polysaccharides.…
Q: In the deoxy state, Histidine forms an ______ salt bridge with aspartate and an ______ salt bridge…
A: A salt bridge is a non-covalent interaction between hydrogen bonding and ionic bonding. A salt…
Q: Acid hydrolysis of proteins in order to determine the amino acid composition leaves most of the…
A: Proteins are biomolecules made up of amino acids that are linked by peptide bonds. When proteins…
Q: Lactose is a disaccharide formed by the formation of a________ bond between glucose and ________.a.…
A: Step 1 Disaccharides are oligosaccharides composed of two monosaccharide residues. Generally the…
Q: Which of the following is true regarding Glycogen It has alph-helical structure Contains beta-1 to 4…
A: Glycogen is the storage form of carbohydrate. It is stored in the liver and muscle. Glycogen is the…
Q: A polysaccharide is a polymer of (choose the best answer) O sugars, and they could be made of…
A: Polysaccharides are a type of carbohydrates.
Q: Structural polysaccharides typically (a) have extensive hydrogen bonding between adjacent molecules…
A: Biomolecules are the biological molecules that are present inside the living organisms. These…
Q: Which of the following statements DO NOT describe the similarity between glycogen and amylopectin? O…
A: Glycogen and amylopectin are polysaccharides which are composed of glucose monomers. These glucose…
Q: Which of the following is FALSE about cellulose? O tis a component of cell wal. O t is composed of…
A: In this option C is incorrect. A) cellulose is component of the cell wall of algea, plants. It is a…
Q: Sucrose is formed when glucose is joined to fructose by a(n) _____.
A: Carbohydrates, also termed as saccharides, are the organic compounds that are composed of carbon,…
Q: a. Draw b furanose b. A polysaccharide which is a major constituent in the exoskeleton of…
A: NOTE: Subpart (a) must have β-furanose and not b furanose. Carbohydrates are biomolecules that are…
Q: Which type of bonds links the monomers that make up cellulose microfibrils Select one: O a. lonic…
A: Cellulose is a molecule, consisting of hundreds – and sometimes even thousands – of carbon,…
Q: All of the following are biological roles of lipids EXCEPT O Catalysts of biological reactions o…
A: - Lipids can work as chemical messengers/hormones as they are small molecules and insoluble in…
Q: Which of the following is a property of both D-altro O They are found in sucrose. O They are major…
A: Monosacharides are the monomers of Polysaccharides that are joined by Glycosidic bonds .…
Q: Which of the following membrane lipids have a direct glycosidic linkage between the head-group sugar…
A: Lipids are organic compounds which are fatty acids or the derivatives of fatty acids. They are…
Q: Phospholipds are NOT completely hydrophilic because of The fatty acid tails The phosphate head The…
A: Ans : Fatty Acid Tails Explanation : Phospholipid Layer Consists Of Two Parts. 1. Hydrophilic Part…
Q: Which of the following monosaccharides has cyclic forms that involve a 6-membered ring? ( fructose…
A: Carbohydrates are classified as Monosaccharides, Oligosaccharides, and Polysaccharides based on the…
Q: An example of a monosaccharide is ________.a. fructoseb. glucosec. galactosed. all of the above
A: Carbohydrates can be defined as the sugars, starches and fibers present in the fruits, grains,…
Q: Which of the following carbohydrates have two different types of glycosidic linkages present? more…
A: Glycosidic linkage is a chemical bond formed between two carbohydrate molecules or between…
Q: Glycoproteins contain oligosaccharide chains covalently bonded to a polypeptide while proteoglycans…
A: Glycoproteins are enzymes and carbohydrate chains that have a role in a variety of physiological…
Q: Which statements about reducing sugars are true? O A reducing sugar will not react with the Cu²+ in…
A: Living organisms contain both organic and inorganic compounds. Biomolecules are the molecules that…
Q: The monosaccharides that can undergo conversion from open chain to cyclic structure. O A) pentoses O…
A: Biochemicals are organic molecules produced by living organisms. Biochemicals may be divided into…
Q: A carbohydrate storage in plants is O a. all of the three molecules O b. maltose O c. amylopectin O…
A: Carbohydrate is a macromolecule that is essential for all living objects, as it provides energy to…
Q: Which of the following saccharides is INCORRECTLY described? * A. D-mannose: Monosaccharide:…
A: Carbohydrates are macronutrients that the body requires for energy production. Carbohydrates provide…
Q: As sweet as sucrose is, an equimolar mixture of its constituent monosaccharides, D-glucose and…
A: Sucrose is a disaccharide that was composed of D-glucose and D-fructose. upon hydrolyses of sucrose…
Q: Cyclization of monosaccharides: A Aldopentoses can form both pyran and fu- ran rings. B] Pyran rings…
A: Monosaccharides with aldehyde or keto group under normal conditions cyclize and form a ring…
Q: Which monosaccharide will be produced when sucrose undergoes hydrolysis reaction? O Glucose and…
A: Glucose is a monosaccharide and it is a simple sugar that is the most important source…
Q: Which of the following about the glycosylation of proteins in the ER is false?
A: a. Dolichol phosphate serves as a lipid carrier. This statement is false. Dolichols play a role in…
Q: lycerophospholipid, glycerin's three -OH groups are esterified, respectively, with one fatty acid…
A: Sugar and phospholipids are the basic biomolecules which take part in multiple biological structures…
Q: subunits. Chitin is a polymer of a. N acetyl D glucose b. D glucose C. D methyl glucose d. D…
A: Carbohydrates are the most important biomolecules that provide us the energy and they are made up of…
Q: One of the following is false: a. Glycosylated HbA has glucose attached to N- terminal of beta…
A: HbA, also termed as adult hemoglobin, is the common hemoglobin tetramer found in humans. This…
Q: The R group of aspartic acid is –CH2COOH. What will the structure of the amino acid be at a very…
A: Amino acids are biomolecules that contain amino and carboxylic acid groups. These groups are present…
Q: The Nitrogen atom participating in a glycosidic bond in inosinate is donated by O glutamine O…
A: Inosinate or inosine monophosphate is the first product of the de novo pathway for the synthesis of…
Q: fatty acids: The phosphatidyl choline with the lowest Tm has two a. 14:0 b. 18:0 O c. 22:0
A: Phosphatidylcholine is an important phospholipid that is present in the cell membrane. It plays a…
Q: Which of the following differentiates chitin with cellulose? Chitin has the alpha (1-4) glycosidic…
A: Polysaccharides are carbohydrates composed of more than 100 monomeric units. Polysaccharides are…
Q: All of the following are biological roles of lipids EXCEPT? Precursor of fat-soluble vitamins O…
A: Lipids are organic compounds which are insoluble in water. They are soluble in nonpolar organic…
Q: O-linked oligosaccharides are commonly attached to the -OH group of O ribose O tyrosine O ysine
A: Oligosaccharides are carbohydrate chains containing 3-10 carbon units. Oligosaccharides are made up…
Q: O It is composed of glucose units. O It is the storage form of sugar in plants. O Its monosaccharide…
A: Ans. The False statement about the starch is # its mono saccharide units are linked via Beta 1,4…
Q: Which of the following is (are) false for sucrose and trehalose? Both are reducing sugars Both…
A: Sucrose is referred to as a nonreducing sugar because of the odd form of connection between the two…
Q: Casein is a protein found in milk. The role of casein in milk is to be a source of amino acids.…
A: Milk consists of many nutritional elements, lipids, proteins, carbohydrates, and minerals. Casein is…
Q: X. Glycosidic linkage in carbohydrates are form as a result of hydrolysis Y On the other hand,…
A: Biological macromolecules are the big sized molecule that are required by body and are metabolized…
Q: Hydrolysis of a mixture of glycerophospholipids may yield the following, EXCEPT: A. Galactose B.…
A: The Glycerophospholipids (GPL) are the major structural lipid components of the eukaryote cellular…
Q: Give at least one function of each of the following:a. glycogenb. glycosaminoglycansc.…
A: The prefix 'glyco' refers to a molecule which has a relationship with sugar. It is derived from a…
Q: After the peptide chain of collagen has been formed, many of the proline residues are hydroxylated…
A: Collagen is the most abundant form of protein found in the human body. It is found in the muscles,…
Q: Cerebroside does not contain Fatty acid chain Sphingosine Polypeptide chain Sugar Next
A: Cerebrosides : Common name for the glycosphingolipids group known as monoglycosylceramides
Q: Disruption of a protein chain's normal shape due to heat or acidity is called: 1) hydrogenation. 2)…
A: Proteins are basically polymers of amino acids. It is divided in to four classes based on its…
Q: Sphingolipids can contain of all of the following except O more than one choice O phosphate O…
A: Sphingolipids are highly bioactive compounds. They participate in the regulation of cell growth,…
Q: A polysaccharide is found in the shells of arthropods (e.g.,lobsters and grasshoppers) and of…
A: Chitin is a long-chain polymer made up of N-acetylglucosamine, a glucose derivative. This…
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- QUESTION 22 When the final product of a series of enzymatically-catalyzed reactions binds to the first enzyme in the pathway to limit its production, it generally uses ___ because the structure of this final product is generally not similar to that of any of the enzyme's normal substrates. Allosteric activation Zymogen activation Covalent modification Competitive inhibition Allosteric inhibitionQuestion 1Predicting Secondary Structure Which of the following peptides is more likely to take up an -helical structure, and why? (a) LKAENDEAARAMSEA (b) CRAGGFPWDQPGTSNQuestion 11. // Hint: Isoelectric focusing separates proteins based on their pI values, and can separate proteins that only differ by a net charge of ±1.±1. Recall that an amino acid residue with a negatively charged R group has a relatively low isoelectric point (pI) where it has zero net charge. Likewise, an amino acid residue with a positively charged R group has a relatively high isoelectric point (pI) where it has zero net charge. Order from Low pH to High pH
- QUESTION NO. 1L-Carnitine is synthesized primarily in the liver but also in the kidneys and then transported to other tissues. It is most concentrated in tissues that use fatty acids as their primary fuel, such as skeletal and cardiac muscle. In this regard, L-carnitine plays an important role in energy production by conjugating to fatty acids for transport from the cytosol into the mitochondria. L-carnitine shuttle is an example of A. ion driven active transport B. facilitated diffusion C. simple diffusion D. ATP driven active transportE. symport F. antiportQUESTION NO.2 Statements: (1) Glucose is both a hexose and a aldose. (2) There can never be more than three enantiomers for a molecule. (3) All common disaccharides have beta-one-four linkages. Which statements are true?QUESTION 16 Peptidyl transferase activity (peptide bond enzyme activity) is associated with what site in the ribosome? E P A XQUESTION NO. 1Targeting a protein to be degraded within proteasomes usually requires ubiquitin. In the function of ubiquitin all of the following are true except: A. ATP is required for activation of ubiquicin. B. a peptide bond forms between the carboxyl terminal of ubiquitin and an ε-amino group of a lysine . C. linkage of a protein to ubiquitin does not always mark it for degradation. D. the N-terminal amino acid is one determinant of selection for degradation. E. ATP is required by the enzyme that transfers the ubiquitin to the protein to be degraded QUESTION NO. 2Much of procollagen formation occurs in the endoplasmic reticulum and Golgi apparatus which requires signal peptide. All of the following statements about targeting a protein for the ER are true except. A. signal peptide usually has a positively charged N-terminus and a stretch of hydrophobic amino acids. B. signal peptide emerging from a free ribosome binds signal recognition…
- Question:- The enzyme aromatase is found in the cytoplasm of some cells and converts testosterone to estrogen. You decide to test aromatase from a particular cell, and oops, your lab partner admits he drastically increased the pH in all the test tubes. Which of the following is a likely result? a. The enzyme will be denatured and the substrate will not bind to the active site. b. The enzyme will convert testosterone to estrogen at a faster rate. c. The mistake will have no effect on the experiment, because enzymes are not sensitive to pH. d. The free energy will be lowered and the reaction will not proceed spontaneously.Question 12 Carbohydrates that appear in glycosylated proteins and lipids in the GA include I. N-Acetylglucosamine II. fucose III. mannose IV. galactose I, II, IV only I, II, III only II, III, IV only I, II, III, IVQuestion 9. Which of thefollowing is not formed through adehydration synthesis reaction?A. polysaccharideB. polypeptideC. Nucleic acidD. phospholipidE. glycerol
- Question 1: When the CAC is run in reverse by microorganisms that use it to fix carbon, the citrate synthase reaction is different and is catalyzed by an enzyme called ATP-citrate lyase. Write the reaction catalyzed by ATP-citrate lyase, then briefly (in one sentence) explain why the use of different chemistry (different from the ‘normal’ direction) makes sense here.Question 4. If you were to synthesize a tetrapeptide consisting of all alanine residues, you would have how many bonds between carbon and nitrogen?Question 22: which of the following secondary structures would you expect to find on the surface of a globular protein? Alpha helix Beta sheet Loops between two alpha-helices None of the above because water would disrupt the hydrogen bonding that stabilizes these structures A,B and C as long as the polar and charged amino acid side chains face the surface of the protein.
