The synthesis of polymers involves the _____________ of water, while the digesti

Question

The synthesis of polymers involves the _____________ of water, while the digestion of polymers involves the ______________ of water.
1- addition, addition
2- removal, removal
3- addition, removal
4- removal, addition

All biological macromolecules are based on

carbon atoms because carbon readily shares four electron pairs with other carbon atoms, and thus form large, complex structures.
carbon atoms because C-H bonds are nonpolar.
oxygen atoms because oxygen has a strong attraction for electrons.
oxygen atoms because the O-H bond is polar and thus allows for hydrogen bonds to form that allow the formation of large conglomerates.

The molecular formula for glucose is C6H12O6. What would be the molecular formula for a disaccharide linking two glucose molecules via dehydration synthesis?

C2H4O2
C6H12O6
C12H24O12
C12H22O11

Sucrose, the sugar in table sugar, is composed of one glucose molecule joined to a fructose molecule. How is sucrose classified?

as a monosaccharide
as a polysaccharide
as a hexose
as a disaccharide

From the fact that (i) high fructose corn syrup (HFCS) tastes sweeter than regular table sugar and that (ii) human taste buds are more sensitive for fructose than glucose, one can conclude that

HFCS contains fructose, but table sugar does not.
glucose and fructose must both be monosaccharides.
the percentage of fructose in HFCS must be higher than that in table sugar.
the percentage of fructose in HFCS must be 55%.
fructose stimulates the production of hormones that control appetite and the blood sugar level.

I would expect plant cell walls to consist of a polysaccharide that is

easy to break down by animals, but hard to break down by most microbes.
easy to break down by most microbes, but hard to break down by most animals.
easy to break down by animals and most microbes.
hard to break down by animals and most microbes.

Nutritionists came up with the term “glycemic load” to describe the health effect of carbohydrates because

glycemic index was too difficult to understand.
glycemic index does not offer any useful information about how quickly a carbohydrate can be broken down into sugars.
the amount of a food consumed is as important as how quickly it can be broken down into sugars.
only the amount of food consumed matters, but not how quickly a carbohydrate can be broken down into sugars.

Why does it make sense that cell division is stimulated by the presence of sugar in the blood?

It is the body's goal to get the sugar out of the blood stream, and two cells can take up and remove more sugar from the blood stream than one cell.
Two cells require more energy (that can be supplied by sugar as an energy source) than one, and it is therefore advantageous for an organism to regulate cell division to be slow in the absence of an energy source and stimulated in the presence of an energy source.

Explanation / Answer

The synthesis of polymers involves the _____________ of water, while the digestion of polymers involves the ______________ of water.
1- addition, addition
2- removal, removal
3- addition, removal
4- removal, addition

All biological macromolecules are based on

carbon atoms because carbon readily shares four electron pairs with other carbon atoms, and thus form large, complex structures.
carbon atoms because C-H bonds are nonpolar.
oxygen atoms because oxygen has a strong attraction for electrons.
oxygen atoms because the O-H bond is polar and thus allows for hydrogen bonds to form that allow the formation of large conglomerates.

The molecular formula for glucose is C6H12O6. What would be the molecular formula for a disaccharide linking two glucose molecules via dehydration synthesis?

C2H4O2
C6H12O6
C12H24O12
C12H22O11

Sucrose, the sugar in table sugar, is composed of one glucose molecule joined to a fructose molecule. How is sucrose classified?

as a monosaccharide
as a polysaccharide
as a hexose
as a disaccharide

From the fact that (i) high fructose corn syrup (HFCS) tastes sweeter than regular table sugar and that (ii) human taste buds are more sensitive for fructose than glucose, one can conclude that

HFCS contains fructose, but table sugar does not.
glucose and fructose must both be monosaccharides.
the percentage of fructose in HFCS must be higher than that in table sugar.
the percentage of fructose in HFCS must be 55%.
fructose stimulates the production of hormones that control appetite and the blood sugar level.

I would expect plant cell walls to consist of a polysaccharide that is

easy to break down by animals, but hard to break down by most microbes.
easy to break down by most microbes, but hard to break down by most animals.
easy to break down by animals and most microbes.
hard to break down by animals and most microbes.

Nutritionists came up with the term “glycemic load” to describe the health effect of carbohydrates because

glycemic index was too difficult to understand.
glycemic index does not offer any useful information about how quickly a carbohydrate can be broken down into sugars.
the amount of a food consumed is as important as how quickly it can be broken down into sugars.
only the amount of food consumed matters, but not how quickly a carbohydrate can be broken down into sugars.

Why does it make sense that cell division is stimulated by the presence of sugar in the blood?

It is the body's goal to get the sugar out of the blood stream, and two cells can take up and remove more sugar from the blood stream than one cell.
Two cells require more energy (that can be supplied by sugar as an energy source) than one, and it is therefore advantageous for an organism to regulate cell division to be slow in the absence of an energy source and stimulated in the presence of an energy source.

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