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Monosaccharides are the simplest carbohydrates
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A key component of cartilage are molecules called
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glycosaminoglycans
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glycans
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glycogylcans
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aminoglycans
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The smallest monosaccharides are composed of [blank_start]three[blank_end] carbons
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glycosaminoglycans , large polymers made up of many repeats of dimers
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Name six common monosaccharides
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D-Ribose
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D-deoxyribose
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D-oxy
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D-glucose
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D-mannose
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D-galactose
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D-lactose
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D-fructose
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Glucose is a reducing sugar
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Glucose can react with hemoglobin, forming
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Hemoglobin A1c allows one to
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Monossacharides are joined to [blank_start]alcohols[blank_end] and [blank_start]amines[blank_end] through [blank_start]glycosidic[blank_end] bonds
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alcohols
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acids
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amines
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amino
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glycosidic
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glycogen
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What are key intermediates in energy generation and biosynthesis
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Phosphorylates sugars
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Monossacharides
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Carbohydrates
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a common modification of carbohydrates
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a common modification of sugars
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makes the sugars anionic and prevents them from leaving the cell
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facilitates the metabolism of sugars
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What contains two or more monosaccharies linked by O-glycosidic bonds
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Oligosaccharides
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sucrose
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lactose
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disaccharides
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What are common disaccharides
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Sucrose
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lactose
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maltose
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glucose
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Sucrose is obtained from sugar cane and sugar beets and is composed of
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of glucose linked to fructose
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linked to a glucose by a β-1-4-linkage
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a degradation product of large oligosaccharides
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The linkage is α for glucose and β for fructose.
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[blank_start]Sucrose[blank_end] is cleaved by sucrase
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Lactose is the disaccharide of milk that consists of
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a galactose linked to a glucose by a β-1-4-linkage
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a degradation product of large oligosaccharides
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the linkage is α for glucose
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lactase cleaves [blank_start]lactose[blank_end]
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[blank_start]Maltose[blank_end] is hydrolyzed by maltase
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polysaccharides are
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If all of the monosaccharides in the polysaccharide are the same, the polysaccharide is called a [blank_start]homopolymer[blank_end]
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The polysaccharide glycogen is the storage form of glucose in plant cells
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Most glucose units in glycogen are lined by
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α-1,4-glycosidic bonds
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branches formed by α-1,6-glycosidic bonds every 10 glucose units
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branches formed by α-1,6-glycosidic bonds every 15 glucose units
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α-1,2-glycosidic bonds
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In plants, glucose is stored as starch
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Two forms of glucose are [blank_start]amylose[blank_end] and [blank_start]amylopectin[blank_end]
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linear polymer of glucose
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branched polymer of glucose
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linked by α-1,4-glycosidic bonds.
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, with an α-1,6-glycosidic bond for every 30 α-1,4-glycosidic bonds.
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branched polymer of glucose
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linear polymer of glucose
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linked by α-1,4-glycosidic bonds.
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with an α-1,6-glycosidic bond for every 30 α-1,4-glycosidic bonds.
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cellulose is a structural component of plants made of chains of glucose
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Mammals cannot digest cellulose and other plant fibers, soluble fibers, such as polygalacturonic acid, aid in digestion
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Carbohydrates can be linked to proteins to form [blank_start]glycoproteins[blank_end]
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largest component by weight
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Play variety of roles, including membrane proteins
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Smallest component by weight
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glycoprotein
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40 percent carbohydrate by weight
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secreted into the blood by the kidney to stimulate production of red blood cells
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secreted into the blood by the kidney to stimulate production of white blood cells
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glycosylation of erythropoietin enhances the stability of the protein in the blood
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What are the three main classes of glycoproteins
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proteoglycans
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Mucins
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Mucoproteins
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Amino proteins
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attached to a particular type of polysaccharide called glycosaminoglycan
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By weight, mainly carbohydrate
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By weight, mainly glucose
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play structural roles
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act as lubricants
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Proteoglycans are proteins attached to glycosaminoglycans, which make up 95% of the proteoglycan by weight.
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Glycosaminoglycans are composed of
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repeating units of a disaccharide, one of which is a derivative of an amino sugar and one of which carries a negative charge, either as a carboxylate or sulfate.
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repeating units of a monosaccharide, one of which is a derivative of an amino sugar and one of which carries a negative charge, either as a carboxylate or sulfate.
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repeating units of a disaccharide, one of which is a derivative of an amino sugar and one of which carries a positive charge, either as a carboxylate or sulfate.
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Proteoglycans are important components of cartilage
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Cartilage is composed of the
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The glycosaminoglycan component of aggrecan cushions joints by releasing water on impact, and then rebinding water.
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Mucopolysaccharidoses, such as Hurler disease, are
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pathological conditions that result from the inability to degrade proteoglycans
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pathological conditions that result from the inability to degrade glycosaminoglycan
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pathological conditions that result from the inability to degrade glycogen
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Mucins or mucoproteins like proteoglycans are predominately carbohydrate
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Mucins or mucoproteins
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attach to the carbohydrate by N-acetylgalactosamine
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Often lubricants
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adhere to epithelial cells, acting a protective barrier
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Non lubricants
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Blood groups are based off what patterns
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protein glycosylation
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Mucoproteins
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Glycosaminoglycan
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The human ABO blood groups reflect the specificity of
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glycosyltransferases
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proteoglycans
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glycosaminoglycan
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All of the blood groups share the oligosaccharide foundation called A
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In type A blood, N-acetylgalactosamine is
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added to the O by a specific glycosyltransferase.
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added to the A by a specific glycosyltransferase.
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added to the B by a specific glycosyltransferase.
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In type B blood, galactose is added by another transferase
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The blood type O, sometimes called H, lacks both the enzymes required to modify the foundation.
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[blank_start]Lectins[blank_end] are specific carbohydrate binding proteins
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Influenza virus binds to sialic acid residues
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Some viruses gain entry into cells by
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first binding to carbohydrates on the cell surface.
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first binding to sugars on the cell surface.
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first binding to proteoglycans on the cell surface.
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The influenza virus binds to
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oligosaccharides composed of sialic acid and galactose.
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disaccharides composed of sialic acid and galactose.
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oligosaccharides composed of sialic acid and fructose.
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disaccharides composed of sialic acid and fructose.
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What viral protein is responsible for carbohydrate binding
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Hemoglobin
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Hemagglutinin
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glycoprotein
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proteoglycan