Which is the only carbohydrate that we can not synthesize?
Responda
Starch
Vitamine C
Chitin
Sugar
Glucose
Questão 2
Questão
Which of these carbohydrates have in general a crystalline structure and a sweet flavor?
Responda
Monosaccharides
Homopolysaccharides
Heteropolysaccharides
Polyhydroxyaldehides
Polyhydroxyketones
Questão 3
Questão
Which of these is the precursor of the synthesis of some aromatic rings?
Responda
D-Glyceraldehide
D-Erythrose
D-Ribose
D-Galactose
D-Ribulose
Questão 4
Questão
Select the one/s which is/are present in glycolysis
Responda
D-Glyceraldehyde
D-Galactose
D-Glyceraldehide and D-Galactose
D-Glyceraldehide and dihydroxyacetone
Dihydroxyacetone and D-Galactose
Questão 5
Questão
Glucose can cycle leading to the formation of a new asymmetric carbon atom. How many carbon atoms have the beta-D-glucopyranose and where is pointing its hydroxyl group?
Responda
6 Carbon atoms and it is pointing up
6 Carbon atoms and it is pointing down
5 Carbon atoms and it is pointing up
5 Carbon atoms and it is pointing down
Any of these
Questão 6
Questão
Sorbitol is a sugar which is inside the group of...
Responda
Deoxysugars
Amino sugars
Acid sugars
Ester sugars
Any of these
Questão 7
Questão
Which of this is not true?
Responda
Sucrose does not have a reducing power and it is a oligosaccharide.
Polysaccharides are chains of 10 or more monosaccharides.
Starch and chitin are constituted only by alfa-Glucose that is linked by alfa (1-4) bonds.
Starch have a lot of non-reducing ends it its ramifications and only one reducing end.
Starch is only present in vegetables and if amylose and amylopectin is present they associate together forming helicoidal structures.
Questão 8
Questão
Which of these carbohydrates has more ramifications and how many?
Responda
Starch and has a ramification per 8-12 residues.
Glycogen and has a ramification per 8-12 residues.
Glycogen and has a ramification per 24-30 residues.
Starch and has a ramification per 24-30 residues.
Any of these
Questão 9
Questão
Which of these is responsible of fever?
Responda
Heterosides
Peptidoglycans
Proteoglycans
Glycoproteins
Lipopolysaccharides
Questão 10
Questão
Which of these is not true?
Responda
Glut 1 is important because it is the transporter that is present in red blood cells and in the brain
Glut 2 is present in the liver
Glut 3 is present in the brain
Glut 4 is the glucose transporter that is present in muscle and adipose tissue and it is sensible to insulin
In the intestine the amylase of the pancreatic fluid will break beta (1-4) bonds of carbohydrates
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