Chemistry Concepts and Applications

Chapter 19: The Chemistry of Life

Standardized Test Practice

1
The polymerization reactions that form proteins are __________ reactions.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807239/602907/figure_19_4.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (39.0K)</a>
A)addition
B)condensation
C)cross-linking
D)double displacement
2
Simple sugars are called

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807239/602907/figure_19_10.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>
A)monosaccharides
B)disaccharides
C)polysaccharides
D)sucrose
3
What molecule is necessary for sucrose to break down into fructose and glucose?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807239/602907/figure_19_11.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (44.0K)</a>
A)ethyl alcohol
B)carbon tetrachloride
C)ethene
D)water
4
More than 95% of the atoms in your body are these four elements.
A)oxygen, carbon, hydrogen, and nitrogen
B)iron, phosphorus, carbon, and hydrogen
C)oxygen, hydrogen, calcium, and carbon
D)hydrogen, iron, silicon, and oxygen
5
Proteins are polymers made up of these monomers.
A)amino acids
B)alkenes
C)hexoses
D)vitamins
6
In proteins, these structures are held together by hydrogen bonds, ionic bonds, and disulfide cross-links.
A)amino acids
B)carbon atoms
C)monomers
D)polypeptides
7
Animals store energy in their livers and muscles as __________.
A)glycogen
B)starch
C)glucose
D)sucrose
8
These are biological compounds that contain a large proportion of C-H bonds and less oxygen than carbohydrates.
A)bones
B)lipids
C)sugars
D)substrates
9
Fatty acids bond to glycerol molecules to form __________.
A)triglycerides
B)polypeptides
C)polysaccharides
D)proteins
10
DNA and RNA are the two kinds of __________ found in cells.
A)carbohydrates
B)lipids
C)nucleic acids
D)steroids
11
The specific sequence of bases in an organism's DNA forms its __________.
A)genetic code
B)RNA
C)nucleus
D)thymine
12
__________ are organic molecules that are required in small amounts in the diet.
A)Carbohydrates
B)Lipids
C)Proteins
D)Vitamins
13
chain of 15 amino acids joined by peptide bonds is called a(n) __________.
A)enzyme
B)peptide
C)polypeptide
D)protein
14
By what type of reaction are monosaccharides linked together to form disaccharides?
A)addition
B)combustion
C)condensation
D)dehydration
15
The sum of all the chemical reactions necessary for the life of an organism is its __________.
A)digestion
B)locomotion
C)metabolism
D)respiration
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.