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Mr. Crocco's LE
Test Description: Random
Instructions: Answer all questions to get your test result.
1) Scientists in the United States, Europe, and Africa have now suggested that the hippopotamus is a relative of the whale. Earlier studies placed the hippo as a close relative of wild pigs, but recent studies have discovered stronger evidence for the c
A
genetic engineering was involved in the earlier theories
B
structural evidence is the best evolutionary factor to consider
C
natural selection does not occur in hippo - potamuses
D
scientific explanations are tentative and subject to change
2) A stable ecosystem would not contain
A
decomposers
B
consumers without producers
C
materials being cycled
D
a constant source of energy
3) Many viruses infect only a certain type of cell because they bind to certain
A
receptor sites on the surface of the cell
B
mitochondria in the cell
C
other viruses on the surface of the cell
D
hormones in the cell
4) The respiratory system includes a layer of cells in the air passages that clean the air before it gets to the lungs. This layer of cells is best classified as
A
an organ
B
an oranelle
C
an organ system
D
a tissue
5) Abiotic factors that could affect the stability of an ecosystem could include
A
droughts, floods, and heat waves
B
species of fish, number of decomposers, and supply of algae
C
blizzards, heat waves, and swarms of grasshoppers
D
hurricanes, packs of wolves, and temperature
6) Mustard gas removes guanine (G) from DNA. For developing embryos, exposure to mustard gas can cause serious deformities because guanine
A
is part of the genetic code
B
supports the structure of ribosomes
C
produces energy for genetic transfer
D
stores the building blocks of proteins
7) Which observation could best be used to indicate an evolutionary relationship between two species?
A
They inhabit the same geographic regions.
B
They occupy the same niche.
C
They have similar fur color.
D
They have similar base sequences.
8) Limited resources contribute to evolutionary change in animals by increasing
A
genetic variation within the population
B
the carrying capacity for the species
C
competition between members of the species
D
the rate of photosynthesis in the population
9) A species in a changing environment would have the best chance of survival as a result of a mutation that has a
A
low adaptive value and occurs in its skin cells
B
low adaptive value and occurs in its gametes
C
high adaptive value and occurs in its gametes
D
high adaptive value and occurs in its skin cells
10) German measles is a disease that can harm an embryo if the mother is infected in the early stages of pregnancy because the virus that causes German measles is able to
A
infect the eggs
B
pass across the placenta
C
be absorbed by the embryo from the mother’s milk
D
be transported to the embryo in red blood cells
*select an answer for all questions
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