ANSWERS26
What is coevolution? - ANSWERS -the evolution of one population driving the evolution of
another
Select the BEST example of batesian mimicry: - ANSWERS -a hawk moth whose wings, when
spread, look like the eyes of a snake
How do willow trees prepare an environment for the next stage of succession? - ANSWERS -
increase the nitrogen content of the soil
On average, how much energy is transferred from one trophic level to the next? - ANSWERS -
10%
The lowest level of organization that exhibits all of the properties of life is/are - ANSWERS -The
cell
All of the following are characteristics of life
except - ANSWERS -movement
All of the species that live together in a given area is known as - ANSWERS -a community
Which of the following represents the correct order, from largest to smallest, for an individual
animal according to the hierarchical structure of biological organization? - ANSWERS -Nervous
system, brain, nerve cell, molecule
,When looking at stratified sediments, where are the oldest fossils found? - ANSWERS -The
oldest fossils are in the lower layers.
According to the theory of gradualism, - ANSWERS -the earth's geological features are formed
by slow continuous processes.
While on his voyage, Darwin observed 13 varieties of finches, each with a different niche.
Darwin would explain the occurrence by saying that - ANSWERS -the different varieties of
finches share a common ancestry.
An ecological niche is - ANSWERS -an organism's role in its environment.
The process of artificial selection demonstrates that: - ANSWERS -A range of variation exists
within members of a species.
With which of the following ideas would Lamarck not agree? - ANSWERS -A purple-flower-loving
cow is grazing in a field with purple and white flowers. The next year white flowers will
dominate the population of flowers in the field.
Selective pressure is - ANSWERS -when an outside force affects the composition of a population
by favoring certain traits over others.
According to evidence provided by transition fossils, the earliest known birds had all but which
of the following characteristics? - ANSWERS -absence of teeth
Which of the following is evolutionary evidence that whales and dolphins descended from land-
dwelling mammals? - ANSWERS -Transition fossils show the presence of leg like structures,
pointing to the possibility that the ancestors of whale and dolphins once lived on land.
, The prevailing theories about mass extinction are that the causes may have been - ANSWERS -
glacier formation, meteorites crashing into the earth, and movement of continents.
Based on DNA evidence, which species are more closely related? - ANSWERS -Humans and
Chimpanzees
When comparing hemoglobin across species, frogs have 67 amino acids which differ from
humans. Mice differ by only 27 amino acids. The evolutionary implications are that - ANSWERS -
Humans and mice share a more recent common ancestry than humans and frogs.
A vestigial structure in the python is the - ANSWERS -pelvic girdle
Which of the following forms of energy was not available for chemical reactions on primitive
earth? - ANSWERS -Fossil fuel
Which of the following statements about RNA is incorrect? - ANSWERS -RNA can't act as a
catalyst for protein synthesis
The atomic number of an atom refers to the number of - ANSWERS -protons
In the figure below, which portion represents the atomic mass?
12 C
6 - ANSWERS -12
Hydrogen bonds can provide strength to large molecules because - ANSWERS -large molecules
may have multiple sites where hydrogen bonding can occur.