The covalent bond that links two sugar monomers is known as a: a) glycoside bond
ID: 78264 • Letter: T
Question
The covalent bond that links two sugar monomers is known as a: a) glycoside bond b) peptide bond c) hydrogen bond d) phosphodiester bond What does the term "insoluble fiber" refer to on food packages? a) Polypeptides b) Cellulose c) Starch d) Amylopectin What is the difference between an aldose sugar and a ketose sugar? a) The number of carbon atoms b) The position of the groups c) One is a ring form, the other is a linear c) The position of the carbonyl group The delta G of a biochemical reaction is +15 kcal/mol. This reaction would be characterized as: a) spontaneous b) non-spontaneous c) at equilibrium (neither spontaneous nor non-spontaneous) d) Unable to determine from this information above. Enzymes reduce the of a reactions, but do not change the overall, a) activation energy, chemical bonds b) speed delta G c) delta G speed d) activation energy: delta G Which of following bonds would have the least energy stored in it? a) C C b) O O c) C-O d) C H The whole point of metabolism is to a) catabolize survival b) supply energy, primarily in the form of ATP for the cell's work c) anabolize macromolecules and monomers into necessary macromolecules for survival. d) use energy, primarily in the form ATP for the cell's workExplanation / Answer
Answer 6: a) glycosidic bond (As explained below)
When the hydroxyl group (OH) of one sugar monomer joins that of the other, a glycosidic bond is formed.
Answer 7: b) Cellulose (As explained below)
Insoluble fiber comprises of lignin, cellulose and some hemicellulose which are found in flax, rye, whole wheat, bran and edible brown rice among others and help in the digestion of food as they reach the stomach almost intact.
Answer 8: d) position of carbonyl group (As explained below)
In aldoses, the carbonyl group(CO) is located at the end of the carbon chain. In ketoses it is located in the middle.
Answer 9: b) non-spontaneous (As explained below)
The reaction is spontaneous when G is negative and non-spontaneous when it is positive.
Answer 10: d) activation energy, G (As explained below)
Enzymes lower the activation energy (G*), but do not change the free energy (G).
Answer 11: b) O-O (As explained below)
Average bond energy of C-C, O-O, C-O and C-H bonds is 348 kJ/mol, 145 kJ/mol, 358 k J/mol and 415 kJ/mol, respectively.
Answer 12: a) catabolize macromolecules and anabolize monomers into necessary macromolecules for survival (As explained below)
Purpose of metabolism is to breakdown complex foods and then use the broken down components to build molecules.
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