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Which one of the following is the only domain that contains eukaryotes?

Question options:

 

Animalia

 

Plantae

 

Archaea

 

Eukarya

 

Question 2

2.5 / 2.5 points

 

RNAs that can act as enzymes are called:

Question options:

 

ribozymes.

 

ATPs.

 

lysosomes.

 

prokaryotes.

 

Question 3

2.5 / 2.5 points

 

You discover a prokaryote that can make its own food in the absence of light. Nutritionally, you would classify this prokaryote as a:

Question options:

 

chemoautotroph.

 

photoheterotroph.

 

photoautotroph.

 

heterotroph.

 

Question 4

2.5 / 2.5 points

 

The science of naming, identifying, and classifying organisms is called:

Question options:

  

biogeography.

 

zoography.

 

phylogeny.

 

taxonomy.

 

Question 5

2.5 / 2.5 points

       

Which of the following is a colonial form of green algae?

Question options:

  

<i>Volvox</i>

 

<i>Giardia</i>

 

<i>Paramecium</i>

 

<i>Plasmodium</i>

 

Question 6

2.5 / 2.5 points

       

Which of the following is NOT true?

Question options:

  

The great diversification of   animals occurred during the Cambrian explosion.

 

For most of biological history,   life was confined to aquatic habitats.

 

The evolution of multicellularity   took place after the origin of the eukaryotes.

 

The first organisms to colonize   land were animals.

 

Question 7

2.5 / 2.5 points

       

Feathers in birds appear to have first evolved for insulation but later conveyed a new advantage in helping create light aerodynamic surfaces. This switch in function is an example of:

Question options:

  

paedomorphosis.

 

punctuated equilibrium.

 

convergent evolution.

 

an exaptation.

 

Question 8

2.5 / 2.5 points

       

Molecular systematics might examine all of the following types of data EXCEPT:

Question options:

  

proteins.

 

DNA sequences.

 

amino acid sequences.

 

anatomical features.

 

Question 9

2.5 / 2.5 points

       

__________ are responsible for toxic red tides.

Question options:

  

Plasmodial slime molds

 

Dinoflagellates

 

Red algae

 

Diatoms

 

Question 10

2.5 / 2.5 points

       

Speciation requires:

Question options:

  

periods of rapid evolutionary   change.

 

geographic isolation.

 

long periods of time.

 

genetic isolation.

 

Question 11

2.5 / 2.5 points

       

An ancestral species and all its evolutionary descendants define a:

Question options:

  

outgroup.

 

clade.

 

genus.

 

ingroup.

 

Question 12

2.5 / 2.5 points

       

Prokaryotes reproduce by means of:

Question options:

  

mitosis.

 

binary fission.

 

budding.

 

meiosis.

 

Question 13

2.5 / 2.5 points

       

Endosymbiosis explains the origin of the __________ of eukaryotes.

Question options:

  

chloroplasts and mitochondria

 

endomembrane system

 

nuclear envelope

 

membrane-bound organelles

 

Question 14

2.5 / 2.5 points

       

Which of the following would be an example of paedomorphosis?

Question options:

  

Starfish regenerating severed   limbs

 

Rapid evolution in a small,   isolated population

 

Two species evolving a similar   appearance

 

The ability to reproduce evolving   in caterpillars

 

Question 15

2.5 / 2.5 points

       

The wing of a penguin is __________ the wing of a butterfly.

Question options:

  

structurally identical to

 

superior to

 

homologous to

 

analogous to

 

Question 16

2.5 / 2.5 points

       

The absence of __________ in the primitive atmosphere was essential to the origin of life on Earth.

Question options:

  

N<sub>2</sub>

 

CO<sub>2</sub>

 

CH<sub>4</sub>

 

O<sub>2</sub>

 

Question 17

2.5 / 2.5 points

       

A period of mass extinction is often followed by:

Question options:

  

explosive diversification.

 

nonbranching evolution.

 

global cooling.

 

equilibrium.

 

Question 18

2.5 / 2.5 points

       

Land was first colonized about __________ years ago.

Question options:

  

100 million

 

500 million

 

1.7 billion

 

2.5 billion

 

Question 19

2.5 / 2.5 points

       

Of the following taxonomic levels, species found within the same __________ are the most closely related.

Question options:

  

family

 

phylum

 

order

 

domain

 

Question 20

2.5 / 2.5 points

       

Variation among pre-cells was due to:

Question options:

  

genetic drift.

 

natural selection.

 

the bottleneck effect.

 

mutation.

 

Lesson 5 Exam

   

Question 21

2.5 / 2.5 points

Which one of the following statements is true?

Question options:

  

Natural selection works on   variation already present in a population.

 

Natural selection works on   non-heritable traits.

 

Individuals evolve through natural   selection.

 

Organisms evolve structures that   they need.

 

Question 22

2.5 / 2.5 points

       

The oldest known fossils are from about __________ years ago.

Question options:

  

3.5 billion

 

6,000

 

4.0 million

 

1.0 billion

 

Question 23

2.5 / 2.5 points

       

While on the Beagle, Darwin was influenced by a book by Charles Lyell that suggested that Earth was __________ and sculpted by geologic processes that __________ today.

Question options:

  

old; continue

 

old; no longer occur

 

young; continue

 

young; no longer occur

 

Question 24

2.5 / 2.5 points

       

The human genome contains approximately __________ genes.

Question options:

  

1,000-2,000

 

50,000-60,000

 

21,000

 

2,000-3,000

 

Question 25

2.5 / 2.5 points

       

Which one of the following can create new alleles?

Question options:

  

Bottleneck Effect

 

Sexual reproduction

 

Mutation

 

Founder Effect

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