Biology EOCT
Review
ROUND 1
Intro to Biology

1. Sexual reproduction : two parents :: asexual
reproduction : ______.
A. two parents
B. one nonliving thing
C. one cell

Answer: E. one parent
D. two cells
E. one parent
Intro to Biology

2. one gram : 1000 milligrams :: one meter :
______.
A. 1000 millimeters
B. 1 millimeter
C. 1 kilometer

D. 1 milliliter
E. 1000 meters
Answer: A. 1000 millimeters
Intro to Biology

3. A researcher investigated two groups of fruit
flies. Population A was kept in a 0.5-L
container. Population B was kept in a 1-L
container. The manipulated variable was the
A. number of flies
D. time in days
B. number of groups
E. size of the containers
C. difference in time per group

Answer: E. size of the containers
Intro to Biology
4.
A.
B.
C.
D.
What two main things can affect the activity
of an enzyme?
pH and acidity
pH and basicity
Temperature and humidity
pH and temperature
ANSWER: D
Intro to Biology
5. The first energy level of an atom can hold two
electrons. After that most energy levels can hold
how many electrons?
A.
B.
C.
D.
2
4
6
8
ANSWER: D
Lighting Round 1
2 points per question correct
Intro to Biology

6. Which of the following is a
logical inference based on the
contents of the graph?
A.
B.
C.
D.
The flies in Group B were
healthier than those in Group A.
A fly population with more
available space will grow larger
than a population with less
space.
If Group B were observed for
40 more days, the size of the
population would double.
In 40 more days, the sizes of
both populations would
decrease at the same rate.
Biochemistry

7. Which one of the following is NOT an
organic molecule found in living organisms?
A. protein
B. nucleic acid
C. carbohydrate
D. sodium chloride
E. lipid
Biochemistry

8. Which combination of particle and charge
is correct?
A. proton: positively charged
B. electron: positively charged
C. neutron: negatively charged
D. proton: negatively charged
E. electron: no charge
Biochemistry

9. The elements or compounds that enter into
a chemical reaction are the
A. cohesion.
B. adhesion.
C. catalysts.
D. reactants.
E. products.
Biochemistry

10. Protein : amino acids :: nucleic acid : _____.
A. acids
D. ribose sugars
B. bases
E. fatty acids
C. nucleotides
Answers


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
6. Answer: A
7. Answer: D. sodium chloride
8. Answer: A. proton: positively charged
9. Answer: D. reactants
10. Answer: C. nucleotides
ROUND 2
Ecology

11. A group of individuals belonging to a
single species that live together in a defined
area is termed a(an)
A. population.
D. biome.
B. ecosystem.
E. biosphere.
C. community.

Answer: A. population
Ecology

12. In addition to herbivores, another type of
consumer is a(an)
I. Carnivore
II. Omnivore
III. Detrivore
A. I only
B. II only
C. I and II only

Answer: E. I, II, and III
D. II and III only
E. I, II, and III
Ecology

13. Which is NOT an abiotic factor in an
ecosystem?
A. microorganisms D. rainfall
B. light
E. soil
C. temperature

Answer: A. microorganisms
ECOLOGY

14. Each of the following is a density-dependent
limiting factor EXCEPT
A.
Competition
Drought
Disease
Predation
Parasitism
B.
C.
D.
E.
ANSWER: B Drought
Lighting Round 2
2 points per question correct
Ecology

15. Flea : dog :: parasite : _____.
A. predator
D. competitor
B. bacteria
E. carnivore
C. host
Ecology

16. Which factors increase the size of a
population?
I. Emigration
II. Birthrate
III. Immigration
A. I only
B. III only
C. I and III only
D. II and III only
E. I, II, and III
Ecology

17. J-shaped curve : exponential :: S-shaped
curve : ______.
A. demographic
D. limiting factor
B. predation
E. immigration
C. logistic
Ecology

18. Which of the following is NOT a
renewable resource?
A. wind
D. fossil fuels
B. sunlight
E. trees
C. water
Cells

19. Animal cells have all of the following
EXCEPT
A. mitochondria.
D. a cell membrane.
B. chloroplasts.
E. Golgi apparatus.
C. a nucleus.
Answers
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
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
15. Answer:
16. Answer:
17. Answer:
18. Answer:
19. Answer:
C. host
D. II and III only
C. logistic
D. fossil fuels
B. chloroplasts
Cells

20. Which process always involves the
movement of materials from inside the cell to
outside the cell?
A. phagocytosis
D. exocytosis
B. endocytosis
E. osmosis
C. diffusion

Answer: D. exocytosis
Cells

21. What is the total number of ATPs produced
during cellular respiration?
A.
12 ATP
36 ATP
24 ATP
2 ATP
B.
C.
D.
ANSWER: B 36 ATP
Cells

22. Choose the cellular structure that is present
in eukaryotic cells but NOT in prokaryotic
cells.
I. Nuclear membrane
II. Mitochondria
III. Cell membrane
A.
I only
II only
III only
B.
C.
ANSWER: D I and II
D. I and II only
E. I, II, and III
Photosynthesis

23. Oak tree : autotroph :: human : ______.
A. consumer
D. omnivore
B. producer
E. heterotroph
C. autotroph

Answer: E. heterotroph
Photosynthesis

24. Which equation best summarizes the process
of photosynthesis?
A. water + carbon dioxide → sugars + oxygen
B. sugars + oxygen → water + carbon
C. water + oxygen → sugars + carbon dioxide
D. oxygen + carbon dioxide → sugars + oxygen
E. sugars + carbon dioxide → water + oxygen

Answer: A.
Lighting Round 3
2 points per question correct
Photosynthesis

25. In a typical plant, all of the following
factors are necessary for photosynthesis
EXCEPT
A. chlorophyll.
D. carbon dioxide.
B. light.
E. water.
C. oxygen.
Cellular Respiration

26. What raw materials are needed for cellular
respiration?
A. glucose and carbon dioxide
B. glucose and oxygen
C. carbon dioxide and oxygen
D. oxygen and lactic acid
E. carbon dioxide and water
Cellular Respiration

27. In eukaryotic cells, most of cellular
respiration takes place in the
A. nuclei.
D. cell walls.
B. cytoplasm.
E. centrioles.
C. mitochondria.
Cell Division

28. Which of the following is NOT a phase of
mitosis?
A. anaphase
D. prophase
B. metaphase
E. interphase
C. telophase
Cell Division

29. A process in which unregulated cell
division occurs is known as
A. mitosis.
D. cancer.
B. the cell cycle.
E. interphase.
C. cytokinesis.
Answers
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25. Answer:
26. Answer:
27. Answer:
28. Answer:
29. Answer:
C. oxygen
B. glucose and oxygen
C. mitochondria.
E. interphase
D. cancer
Genetics

30. What happens to the chromosome number
during meiosis?
A. It doubles.
D. It becomes diploid.
B. It stays the same. E. It quadruples.
C. It halves.

Answer: C. It halves.
Genetics

31. Two pink-flowering plants are crossed. The
offspring flower as follows: 25% red, 25%
white, 50% pink. What pattern of inheritance
does flower color in these flowers follow?
A. dominance
D. recessiveness
B. multiple alleles
E. polygenic traits
C. incomplete dominance

Answer: C. incomplete dominance
Genetics

32. Mitosis : diploid daughter cells :: meiosis :
______.
A. egg cells
B. sperm cells
C. four daughter cells
D. haploid daughter cells
E. tetraploid daughter cells

Answer: D. haploid daughter cells
Genetics
33. If you make a Punnett square showing a
cross between two heterozygous individuals
for two separate traits, what should the
phenotypic ratio be?
A.
3:1:3:1
B.
1:1
C.
9:3:3:1
D.
6:4
ANSWER: C 9:3:3:1

Genetics

34. What happened during meiosis for an
individual to get Down Syndrome?
A.
Nondisjunction of the chromosome 21 pair
Copying of Chromosome 21
Deletion of Chromosome 21
Magic
B.
C.
D.
ANSWER: A
Lighting Round 4
2 points per question correct
DNA and RNA

35. During replication, which sequence of
nucleotides would bond with the DNA sequence
TATGA?
A. TATGA
D. AUAGA
B. UAUGA
E. ATACA
C. ATACT
DNA and RNA

36. In which of the following ways does RNA
differ from DNA?
A. RNA contains uracil and deoxyribose.
B. RNA contains ribose and thymine.
C. RNA contains uracil and ribose.
D. RNA contains adenine and ribose.
E. RNA contains uracil, adenine, and ribose.
DNA and RNA

37. Which of the following nucleotide(s)
bond(s) with adenine?
A. thymine only
D. cytosine & guanine
B. uracil only
E. thymine & uracil
C. tymine, uracil, and cytosine
DNA and RNA

38. Which sample(s) support(s) the basepairing rules?
A. Sample A only
B. Sample B only
C. Sample C only
D. Samples A and C
E. Samples A, B, and C
Evolution

39. Which scientist formulated the theory of
evolution through natural selection?
A. Charles Darwin D. Charles Lyell
B. James Hutton
E. Alfred Wallace
C. Jean-Baptiste Lamark
Answers
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
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
35. Answer: C. ATACT
36. Answer: C. RNA contains uracil and
ribose.
37. Answer: E. thymine & uracil
38. Answer: D. Samples A and C
39. Answer: A. Charles Darwin
Evolution
ROUND 5

34. When two species reproduce at different
times, the situation is called
A. temporal isolation.
D. temporal selection.
B. speciation.
E. geographic isolation.
C. genetic drift.

Answer: A. temporal isolation.
Evolution
35. What does natural selection act upon to
enable evolution to occur?
I. Individuals
A. all of them
II. Clones
B. I only
III. Species
C. II and IV
IV. Populations
D. III, IV, and V
V. Phenotypes

ANSWER: D
Evolution

36. What is currently the strongest and most
reliable evidence for evolution?
A.
Fossils
DNA evidence
Embryology
Homologous structures
B.
C.
D.
ANSWER: B
Classification

37. Which of the following is NOT a characteristic of
Linnaeus’s system for naming organisms?
A. two-part name
B. multi-part name describing several traits
C. name that identifies the organism’s genus
D. name that identifies the organism’s species
E. name unique to a single species

Answer: B. multi-part name describing several traits
Classification

38. Animalia : kingdom :: Gastropoda : ______.
A. order
D. phylum
B. class
E. domain
C. species

Answer: B. class
Lighting Round 5
2 points per question correct
Bacteria & Viruses

39. Which illness is NOT caused by a virus?
A. AIDS
D. common cold
B. polio
E. flu
C. botulism
Bacteria & Viruses

40. All bacteria are classified as
A. eukaryotes.
D. prokaryotes.
B. protists.
E. blue-green algae.
C. archaea.
Protists

41. In amoebas, what structure helps the
organism move and feed?
A. flagellum
D. pseudopod
B. cilia
E. contractile vacuole
C. food vacuole
Protists

42. Based on the data in the graph,
the incidence of malaria is
I. Declining in Africa.
II. Increasing in Southeast Asia.
III. Increasing in North & South
America
A. I only
D. III only
B. II and III only E. I, II, and III
C. I and II only
Fungi

43. Which of the following organisms is NOT a
fungus?
A. mushroom
D. bread mold
B. puffball
E. yeast
C. water mold
Answers

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39. Answer:
40. Answer:
41. Answer:
42. Answer:
43. Answer:
protist)
C. botulism
D. prokaryotes
D. pseudopod
C. I and II only
C. water mold (funguslike
Round 6
Fungi

44. Plant : root :: mold : _____.
A. gametangium
D. stolon
B. zygospore
E. sporangiophore
C. rhizoid

Answer: C. rhizoid
Plants

45. Gymnosperm : cones :: angiosperm : _____.
A. roots
D. leaves
B. seeds
E. flowers
C. stems

Answer: E. flowers
Plants

46. Which of the following is a basic requirement of
plants?
I. sunlight
II. Carbon dioxide
III. water
A. I only
B. II only
C. I and II only

Answer: E. I, II, and III
D. II and III only
E. I, II, and III
Plants

47. What is the correct order for the process of cellular
respiration?
A.
Electron transport chain (ETC), Calvin cycle, Glycolysis
Glycolysis, Krebs cycle, electron transport (ETC)
Krebs, ETC, glycolysis
Calvin cycle, Krebs cycle, ETC
B.
C.
D.
ANSWER: B
Plants

A.
B.
C.
D.
48. The major source of oxygen in the
atmosphere is released from what?
Cellular respiration
Car exhaust
Photosynthesis
Weathering of rock
ANSWER: C
Microscopes

49. When trying to use a microscope to view a very small
organisms, you should…
A.
Use the highest magnification objective first and try to
view the organism
Use the lowest objective and coarse adjustment first, focus
it, and work your way up to the highest magnification and
fine adjustment.
Use the fine adjustment and the highest magnification
objective first.
B.
C.
ANSWER: B
Lighting Round 6
2 points per question correct
Plants

50. Where does most of the photosynthesis occur
in a plant?
A. stomata
D. vascular cambium
B. guard cells
E. mesophyll tissue of
C. bark
the leaves
Plants

51. Where in a flower are pollen grains
produced?
A. sepals
D. ovary
B. anthers
E. stigma
C. carpels
Animals

52. Radial symmetry : jellyfish :: asymmetry :
_____.
A. medusa
D. coral
B. polyp
E. sponge
C. sea anemone
Answers



50. Answer: E. mesophyll tissue
51. Answer: B. anthers
52. Answer: E. sponge
Animals
ROUND 7

53. The concentration of nerve tissue and organs
in one end of the body is called
A. cephalization.
D. body symmetry.
B. segmentation.
E. nerve nets.
C. diffusion.

Answer: A. cephalization.
Animals

54. tadpole : gills :: frog : ______.
A. atrium
D. eggs
B. lungs
E. stomach
C. scales

Answer: B. lungs
Animals

55. Which phyla of animals contains the smartest
invertebrate in the animal kingdom?
A.
Gastropoda
Echinodermata
Cnidaria
Mollusca
B.
C.
D.
ANSWER: D
Ecology

A.
B.
C.
D.
56. Humans have caused a huge impact on the
environment. What has caused an increase in acid
rain?
Use of CFCs
Use of pesticides
Coal burning power plants
Nuclear power plants
ANSWER: C
Animals

58. Amniotic eggs are a characteristic of
I. Amphibians
II. Reptiles
III. Birds
A. I only
B. II only
C. I and II only

Answer: D. II and III only
D. II and III only
E. I, II, and III
Good Luck!
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