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Principles of Biology Bio103 Final Exam Exam A1. Examination of the animals that are vertebrates, a group that includes organisms such
as humans, birds, and frogs, demonstrates that through evolution, one basic body
plan can give rise to organisms with very different features and forms. What is the
significance of this?
a. Vertebrates may all be members of the same species.
b. Vertebrates may all be producers.
c. Vertebrates may all share a common ancestor.
d. Vertebrates are evolutionarily unrelated.
2. Which of the following Kingdoms contains prokaryotic organisms?
a. Archaea b. Fungi c. Protista d. Plantae
3. Each and every living thing on Earth needs a source of in order to survive.
a. oxygen and electricity c. carbon dioxide and fat
b. energy and carbon d. cells and tissues
4. Lichens are formed by an association between
a. algae and plants. c. algae and fungi.
b. fungi and plants. d. protists and algae.
5. Life on Earth is believed to have begun in the oceans. The first organisms to
successfully move from the water to grow on land were probably
a. bacteria b. fungi c. plants d. animals
6. Based on the cladogram shown to the right,
which of the following pairs of organisms would
have the greatest number of shared derived
features?
a. Lamprey eels and sharks
b. Sharks and salmon
c. Sharks and lizards
d. Salmon and lizards
7. Based on the cladogram shown to the right,
which organism appeared first in this
evolutionary lineage?
a. Lamprey eel
b. Shark
c. Salmon
d. Lizard
8. The number (6) at the top of the symbol for the element shown
to the right is the of this element.
a. atomic number c. atomic mass
b. mass number d. electron configuration
9. An atom of the element whose symbol is shown to the right will
have
electrons.
a. 2 b. 6 c. 12 d. 18
, 10. A solution that has a pH of is a base.
a. pH 3 b. pH 5 c. pH 7 d. pH 9
11. The difference between organic and inorganic compounds is that organic
compounds always contain
a. iron b. nitrogen c. carbon d. oxygen
Refer to the Periodic Table (shown in part to the right) to answer the next 4 questions.
12. Which of the following elements has a complete valence (outermost) shell filled with
electrons?
a. carbon
b. oxygen
c. neon
d. chlorine
13. Which of the following elements is
chemically reactive?
a. nitrogen
b. phosphorus
c. silicon
d. all of these are chemically reactive
14. An atom of which element has 14
neutrons in its nucleus?
a. carbon c. phosphorus
b. sulfur d. silicon
15. Which element is shown as a radioactive isotope?
a. fluorine b. chlorine c. argon d. Radioactivity can’t be determined from this
table.
16. Which type of organic molecule contains long chains of nucleotides?
a. protein b. fatty acids c. amino acids d. nucleic acids
17. In a single molecule of water (H2O), the atoms of hydrogen and oxygen are joined by
bonds.
a. organic b. ionic c. hydrogen d. covalent
18. With a pH meter, you measure the pH of solution A and find out that it is 6.8. You add a
large quantity of a very strong acid to solution A and measure the pH again, and find that
the pH didn’t change. You can therefore conclude that solution A is a(n)
a. isotope b. base c. buffer d. electrolyte
19. Monosaccharides are the building blocks of which organic molecule?
a. proteins b. DNA c. lipids d. carbohydrates
20. Which of the following is something that fatty acids are not involved in?
a. energy storage c. membrane construction
b. storage of genetic information d. building blocks of fats
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