Molecules of Life

Topics: Oxygen, Atom, Water Pages: 3 (595 words) Published: November 26, 2012
Molecules of Life Computer Assignment

A) What characteristics are typical of molecules that are gases at room temperature? Molecules that are gases at room temperature tend to be smaller in size. This causes it to have a small molecular masses and has a relatively weak intermolecular forces of attraction.

B) Compare and contrast the characteristics of soluble and insoluble molecules.

Soluble MoleculesInsoluble Molecules
-polar-non polar
-lots of oxygen atoms-very few oxygen atoms
-high electronegativity-low electronegativity

C) Describe the general molecular characteristics of mono and disaccharides. What features account for their high solubility in water. The feature of mono and disaccharides that accounts for their high solubility in water is that they are relatively small-moderate in size and are polar (or ionic).

D) What element forms the bridge between the monomers that make up maltose and sucrose? What molecule was made during the condensation reactions that formed these disaccharides? A water molecule is formed during the condensation reactions that formed these disaccharides. This leaves a oxygen behind which bridges between the monomers that make up maltose and sucrose.

E) Compare and contrast the overall shapes of cellulose, amylose, and amylopectin. How do their differences in structure account for their different biological functions?

CelluloseAmyloseAmylopectin
non-branchingnon-linearnon-linear
linearglobular structureglobular structure
ability to bond to hydrogennon-branchingbranched
FunctionFunctionFunction
Structural support for plantsglucose storage moleculesglucose storage molecules

F) What features of cellulose molecules account for both the strength and the water absorbing qualities of paper towels? The features of a cellulose molecule that accounts for both the strength and the water absorbing qualities of paper towels are that it is polar making it attracted to water molecules...
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