Download LS ch 22 part 2 test - Saint Joseph High School

Life Science Chapter 22 part 2: Macromolecules of Life
Name ____________________________________________________ Period ____________
Multiple choice: Choose the letter of the answer that best completes each statement
__________1. Waxy or oily organic compounds are
a. nucleic acids
c. proteins
b. lipids
d. carbohydrates
__________2. To make a polymer, complex molecules are formed by joining together of
a. macromolecules
c. polymers
b. micromolecules
d. monomers
__________3. Most substances in the human body are classified as organic compounds because they
contain
a. hydrogen
c. nitrogen
b. oxygen
d. carbon
__________4. The term that is least closely related to the others is
a. glucose
c. disaccharide
b. fructose
d. monosaccharide
__________5. Proteins, unlike carbohydrates, contain
a. nitrogen
c. hydrogen
b. oxygen
d. carbon
__________6. Many lipids are formed by the attachment of three
a. fatty acid chains to glycerol
b. hydroxyl groups to glycerol
c. cholesterols
d. fatty acid chains to carboxyl groups
__________7. If all the carbon atoms in a fatty acid chain are joined by single bonds, the lipid is said to
be
a. unsaturated
c. saturated
b. polyunsaturated
d. polysaturated
__________8. In the body, enzymes
a. slow down the rate of chemical reactions
b. speed up the rate of a chemical reaction
c. get used up during a chemical reaction
d. become changed during a chemical reaction
___________9. Nucleotides are built from each of the following basic parts except a
a. 5- carbon sugar
c. phosphate group
b. 6- carbon starch
d. nitrogenous base
___________10. In dehydration synthesis, two molecules of simple compounds are combined by the
a. removal of a molecule of water
b. addition of a molecule of water
c. doubling of a molecule of water
d. splitting of a molecule of water
___________11. In a chemical reaction, reactants bind to an enzyme at a region known as the
a. carboxyl group
c. active site
b. hydroxyl group
d. substrate
___________12. Polysaccharides are split apart into simple sugars (monosaccharides) in a reaction known as
a. hydrolysis
c. synthesis
b. dehydration
d. polymerization
___________13. The amino group in any amino acid is
a. –COOH
c. -NH2
b. – R
d. –OH
___________14. Although glucose and galactose both have the chemical formula C6H12O6, they differ in the
a. number of atoms
c. number of covalent bonds
b. arrangement of the atoms
d. lack of complete bonds
___________15. Practically all the compounds in the human body contain
a. carbon and sulfur
c. sulfur and phosphorus
b. nitrogen and carbon
d. phosphorus and nitrogen
___________16. Different amino acids contain a different
a. amino group
c. carboxyl group
b. R group
d. H group
___________17. Each of the following is a polysaccharide except
a. sucrose
c. starch
b. cellulose
d. glycogen
___________18. In fatty acids and amino acids, what is the ‘COOH’ group called?
a. solute
b. solvent
c. hydroxyl group
d. carboxyl group
___________19. A molecule that consists of parts that dissolve in water ‘water lovers’ and parts that do not
‘water haters’ is probably a
a. sterol
c. phospholipid
b. cholesterol
d. polysaccharide
___________20. The most abundant compound in most living things is
a. carbon dioxide
c. sodium chloride
b. water
d. hydrochloric acid
___________21. Which group of elements combine to form practically all the chemical compounds in living
things?
a. carbon, hydrogen, oxygen, nitrogen
b. carbon, hydrogen, phosphorus, nitrogen
c. carbon, sodium, chlorine, oxygen
d. sulfur, phosphorus, carbon, oxygen
____________22. Proteins are polymers (long chains) of
a. fatty acids
c. sterols
b. amino acids
d. nucleic acids
____________23. The function of nucleic acids is related to
a. energy release
c. transmission of genetic information
b. enzyme formation
d. catalyzing chemical reactions
Completion: Complete each statement on the line at the left.
____________________________________24. Most substances in the body are organic compounds because they
contain ______________.
____________________________________25. When chemicals bonds in glucose are broken down in the cells, what is
released?
____________________________________26. Fats may be formed by attaching three fatty acid chains to a molecule
of ________________.
____________________________________27. The macromolecules that only contain carbon, hydrogen and oxygen
with a 2:1 ratio of hydrogen to oxygen are the ___________?
____________________________________28. The catalysts in the body are known as _____________.
____________________________________29. Fatty, waxy or oily organic compounds are called ___________.
____________________________________30. The term for a large organic polymer.
The following diagram shows a compound
necessary for life.
31. What group of macromolecules does
this chemical compound belong to?
________________________________________________
32. What is unique about the hydrogen to
oxygen ratio of this molecule?
_________________________________________________
33. What is the function of this group of
molecules?
_________________________________________________