32 terms

Chapter 3- The Molecules of Cells

Characteristics of carbon that contribute to its ability to form an immense diversity of organic molecules include its
all of the above
contain only carbon and hydrogen atoms
Propanol and isopropanol are isomers. This means that they have
the same molecular formula but different chemical structures (properties)
Organic compounds
always contain carbon
Which of the following is an amino group?
Which of the following statements is (are) true of the polymers found in living organisms?
all types of organisms use approximately the same set of monomer to form their polymers
Monosaccharides can be joined together by a process called dehydration synthesis. Which of the following statements is (are) true of this process?
all of the above are true
Which list below consists only of molecules that are all polymers?
proteins, nucleic acids, polysaccharides
A molecule with the formula C55H110O55 is probably a
Sucrose, fructose and maltose
are carbohydrates
all of the above
How does glucose differ from sucrose, cellulose and starch?
it is a monosaccharide
Which of the following is not a polysaccharide?
Foods that are high in fiber are most likely to be derived from
Humans cannot derive nutrients from the cellulose in plant food because
they lack the enzymes needed to break down the cellulose
One way to convert an oil into a substance that is solid at room temperature is to
add hydrogens, decreasing the number of double bonds in the molecules
Lipids are important in animal cells as
a and b
A diet high in animal products may increase the risk for heart disease. This is apparently due to the fact that
both a and d
Hydrophobic compounds are
repelled by water
A triglyceride
all of the above
Fatty acids with double bonds between some of their carbons are said to be
all of the above
Proteins differ from one another because
the sequence of amino acids in the polypeptide chain differs from protein to protein
Glucose molecules are tostarch as______ are to proteins
amino acids
The ________ structure of a protein consists of a chain of amino acids assembled in a specific order.
Which of the following is an example of secondary structure of a protein?
both b and d
all of the above
Genetic information is encoded in the
sequence of the nucleotides in DNA
Which of the following substances contains nitrogen?
all of the above
How does DNA differ from RNA?
all of the above are differences
Which, if any, of the following choices does not properly pair an organic compound with one of its building blocks (subunits)?
nucleic acid-- glycerol
Citric acid makes lemons taste sour. Which of the following is a functional group that would cause a molecule like citric acid to be acidic?