PRIMAVERA BIOLOGY B UNIT 4 EXAM QUESTIONS AND ANSWERS
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PRIMAVERA BIOLOGY B UNIT 4
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PRIMAVERA BIOLOGY B UNIT 4
PRIMAVERA BIOLOGY B UNIT 4 EXAM
Which option correctly describes how Earth's temperature has changed during its history? - Answer- Earth was initially very hot. It gradually cooled down.
Which theory suggests that life on Earth originated from microbes carried to Earth by meteorites or comets...
PRIMAVERA BIOLOGY B UNIT 4 EXAM
Which option correctly describes how Earth's temperature has changed during its
history? - Answer- Earth was initially very hot. It gradually cooled down.
Which theory suggests that life on Earth originated from microbes carried to Earth by
meteorites or comets? - Answer- panspermia
What summarizes the RNA world hypothesis? - Answer- RNA was the first
biomolecule to evolve and did so before DNA and proteins.
Which options describe Darwin's theory of natural selection?
Select all that apply. - Answer- Evolution occurs because of natural selection.
Natural selection results in descent with modification.
Organisms produce many young during their lifetime. This means that, if resources
are available, populations increase over time.
What process does this describe? - Answer- overproduction
Structures that develop from the same type of embryonic tissue but take on different
forms and functions when the organisms fully develop are called _[blank]_. - Answer-
homologous structures
Which of the following can scientists learn about from studying fossils?
Select all that apply. - Answer- cellular structure
how extinct organisms moved
The same section of DNA is compared in different bird species.
Which type of bird is most closely related to the woodpecker? - Answer- kingfisher
What can be interpreted from this cladogram? - Answer- The dodo is most closely
related to the spotted dove.
In a phylogenetic tree, what does the distance between branches represent? -
Answer- the amount of evolutionary change
What does the Hardy-Weinberg principle state? - Answer- Allele frequencies in a
population remain constant unless forces cause the frequencies to change.
The assumptions of the Hardy-Weinberg principle can be causes of evolutionary
change.
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