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1) if the mean annual precipitation of a region, currently characterized by grasslands,
was to increase by 50 cm per year, what type of biome(s) would evolve in that region?
a. temperate forests
b. savanna
c. deserts and tropical rainforests
d. taiga and temperate rainforests
e. temperate forests and shrublands
2) cutting off the tails of mice over several generations should cause the tails of their
offspring to become shorter, according to the ideas of which of these scientists?
a. darwin
b. lamarck
c. cuvier
d. lyell
3) which of the listed organisms do not possess the necessary features to be classified as
a member of phylum mollusca?
a. clams
b. squids
c. lobsters
d. nautiluses
e. snails
4) in the first step of starch digestion, starch is converted to _______, which is then
digested to ________ by the enzyme maltase.
a. glucose; maltose
b. amino acids; proteins
c. maltose; glucose
d. fat; glycerol and 3 fatty acids
5) the cells that line our respiratory tract, and one-celled paramecia both have these
short hair-like projections.
a. flagella
b. microfilaments
c. centrioles
d. cilia
e. pili
6) the only animal in which digestion occurs within cells is
a. comb jellies.
b. flatworms.
c. sponges.
d. cnidarians.
7) interphase:
a. occupies the majority of the cell cycle
b. includes g1, s and g2 stages
c. results in an increase in cell size
d. all of the above
e. none of the above
8) ventilation causes alveoli of the lungs to have _______ the blood in pulmonary
capillaries.
a. a lower po2 and a higher pco2 than
b. the same po2 and pco2 as
c. a higher po2 and a lower pco2 than
d. none of the above are correct.
9) the hormone produced by cells around the embryo that maintains the corpus luteum
and pregnancy is called
a. estrogen.
b. progesterone.
c. luteinizing hormone (lh).
d. follicle-stimulating hormone (fsh).
e. human chorionic gonadotropin (hcg).
10) some biologists study the complex interactions of animals and plants in forests or
prairies. such ecology field research often produces slightly different results for
different researchers. in contrast, ecology experiments that are run indoors with one
organism in a terrarium usually produce results that are repeatable. what is the most
likely explanation?
a. the scientific method is only useful in laboratory settings.
b. it is not possible to establish a control group outside of a laboratory.
c. it is easier to hold all but one variable constant in a laboratory.
d. field research is only descriptive, and descriptive research is not strictly 'science."
e. fieldwork is inductive; lab work is deductive.
11) which type of blood component is involved in the initiation of clotting?
a. red blood cells
b. white blood cells
c. plasma proteins
d. platelets
12) which value of biodiversity in an ecosystem will benefit endangered species the
most?
a. consumptive value
b. medicinal value
c. ecotourism
d. agricultural value
e. regulation of climate
