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Biology 2 > Exam II > Flashcards

Exam II Flashcards

1
Q

Which of the following is NOT a major source of genetic diversity in organisms?
A. Mutation
B. Non-random mating
C. Genetic Drift
D. All of the above
E. None of the above

A

E. None of the above

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2
Q

Which best describes a change to the DNA sequence of an organism?
A. Bottleneck
B. Founder effect
C. Recombination
D. Mutation
E. Natural selection

A

D. Mutation

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3
Q

Assortative mating produces more homozygotes, and inbreeding is an extreme example. True or false?

A

True

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4
Q

Large populations are more susceptible to genetic drift altering their genotype frequencies. True or false?

A

False

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4
Q

What is the best term for describing advantages in survival and reproduction?
A. Founder effect
B. Fitness
C. Natural selection
D. Directional selection
E. None of the above

A

B. Fitness

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5
Q

Which type of natural selection would produce a trait over time with less variation?
A. Disruptive
B. Directional
C. Stabilizing
D. Directional Selection
E. None of the above

A

C. Stabilizing

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6
Q

Which of the following is FALSE about prokaryotes?
A. Includes archaea & bacteria
B. No nucleus
C. Circular DNA
D. Metabolically diverse
E. None

A

E. None

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7
Q

Bacteria are a type of prokaryote with peptidoglycan cell walls and only 1 RNA polymerase. True or false?

A

True

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8
Q

Which of the following would you not find in the protistans?
A. Unicellular photoheterotroph
B. Unicellular chemoheterotroph
C. Colonial photoautotroph
D. Multicellular photoautotroph
E. Colonial chemoautotroph

A

E. Colonial chemoautotroph

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9
Q

What molecule is fixed by photosynthesis to produce sugars?
A. Water
B. Chlorophyll
C. Carbon Dioxide
D. Carbohydrate
E. None of the above

A

C. Carbon Dioxide

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10
Q

What molecule provides the electrons to replace those lost from chlorophyll during light reactions?
A. Water
B. Chlorophyll
C. Carbon Dioxide
D. Carbohydrate
E. None of the above

A

A. Water

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10
Q

A chemoautotroph gets its carbon from carbon dioxide and its energy from inorganic molecules. True or false?

A

True

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11
Q

Which two groups of organisms are entirely chemoheterotrophs?
A. Animals and Protists
B. Protists and Plants
C. Plants and Fungi
D. Fungi and Animals
E. None

A

D. Fungi and Animals

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12
Q

Which two types of metabolism involve acquiring energy from sunlight?
A. Photoautotroph & Chemoautotroph
B. Photoheterotroph & Chemoheterotroph
C. Photoautotroph & Chemoautotroph
D. Photoautotroph & Photoheterotroph
E. None of the above

A

D. Photoautortoph & Photoheterotroph

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13
Q

Which two groups of organisms have cells surrounded by cell walls?
A. Animals and Protists
B. Protists and Plants
C. Plants and Fungi
D. Fungi and Animals
E. None

A

C. Plants and Fungi

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14
Q

Briefly describe what the following characteristics of animals mean.
Gonochoristic or hermaphroditic

A

Gonochoristic: have 2 separate sexes (male & female)
Hermaphroditic: can alternate sexes or be both sexes as 1

15
Q

Briefly describe what the following characteristics of animals mean.
External or internal fertilization

A

External: when fertilization happens outside of the body (ex: eggs)
Internal: when fertilization happens inside the body

16
Q

Briefly describe what the following characteristics of animals mean.
Symmetry

A

Symmetry: the different variations in which an object can be divided into mirror images (bilateral, pentaradial, radial, asymmetrical, & biradial)

17
Q

What is a fifth characteristic of animals that is not listed before?

A

Animals are multicellular

18
Q

What are the 3 embryonic tissue layers of a triploblastic animal?

A

~ endoderm
~ mesoderm
~ ectoderm

19
Q

Match the characteristics on the right with the groups of organisms on the left. (one answer per group)
____ Archaea A. Chemoheterotrophic only
____ Protista B. Photoautotrophic
____ Fungi C. Nerve tissue
____ Plantae D. Extremophiles
E. Mostly unicellular but some colonial or
multicellular
F. Chemophototrophic

A

D. Extremophiles
E. Mostly unicellular but some colonial or multicellular
A. Chemoheterotrophic only
B. Photoautotrophic

20
Q

Match the structure on the right with the groups of organisms on the left.
____ Sponges A. Acoelomate
____ Jellyfish B. Cnidocyte
____ Flatworms C. Choanocyte
____ Nematodes D. Open circulatory system
E. S-shaped movement
F. Schizocoely

A

C. Open circulatory system
B. Cnidocyte
A. Acoelomate
E. S-shaped movement

21
Q

Match the description of body form on the right with the organisms on the left.
___ Annelida
___ Platyhelminthes
___ Porifera
___ Molluskia
A. No tissue; vaselike; feeding layer internally
B. Triploblastic; eucoelomate; radially symmetrical
C. Eucoelomate; open circulatory system; ventral foot
D. Eucoelomate; segmented; bilateral symmetry
E. Radially symmetrical; diploblastic; gastrovascular
cavity
F. Triploblastic; acoelomate; bilateral symmetry

A

D. Eucoelomate; segmented; bilateral symmetry
F. Triploblastic; acoelomate; bilateral symmetry
A. No tissue; vaselike; feeding layer internally
C. Eucoelomate; open circulatory system; ventral foot

22
Q

Match the description of lifestyle on the right with the organisms on the left.
___ Cnidaria
___ Molluska
___ Annelida
___ Nematoda
A. Mostly marine; predatory; polyp & medusa forms
B. Dorsoventrally flattened; many parasitic;
complex life cycles
C. Marine, freshwater, terrestrial; highly varied
feeding; includes bacteria
D. Extremophiles; cell walls; very rare
E. Ubiquitous; many parasitic; very abundant
F. Rasping tongue; mostly marine & freshwater;
mantle cavity

A

A. Mostly marine; predatory; polyp & medusa forms
F. Rasping tongue; mostly marine & freshwater; mantle cavity
C. Marine, freshwater, terrestrial; highly varied feeding;
includes bacteria
E. Ubiquitous; many parasitic; very abundant

23
Q

Which of the following does not occur in the mantle cavity of a mollusk?
Radula
Nephridiopore
Gills
Anus

A

Radula

24
Q

Which of the following is serial repetition of parts?
Triploblasty
Enterocoely
Tagmatism
Segmentation

A

Segmentation

25
Q

Which of the following is the stage of a cnidarian that sexually reproduces?
Polyp
Larva
Medusa
Gamete

A

Medusa

26
Q

Which of the following is an example of a flatworm?
Clonorchis
Obelia
Lumbricus
Homo

A

Clonorchis

27
Q

Which of the following is radially symmetrical?
Roundworm
Flatworm
Sponge
Anemone

A

Anemone

28
Q

Which of the following would sting someone running into a jellyfish?
Nematocyst
Epithelium
Choanocyte
Amebocyte

A

Nematocyst

29
Q

Which of the following would be parasitic?
Tapeworm
Earthworm
Anemone
Bivalve

A

Tapeworm

30
Q

Which of the following would be a filter feeder?
Gastropod
Bivalve
Cephalopod
Tooth shell

A

Bivalve

Biology 2 (9 decks)

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