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WorksheetsUnit 11 Test Review
Total questions: 14
Worksheet time: 8mins
Which of the following explains why cells that contained mitochondria-like organelles had an evolutionary advantage?
They were immune to bacteria
They are able to use more energy
They made predators die off
They created life
Which evidence caused scientists to think that the first cells were anaerobic?
There wasn't any oxygen back then
its easier for cells to breathe
because cells don't need oxygen
that's how they make their own food
How is DNA evidence used to determine if organisms have a common ancestor?
If animals have a lot of DNA in common that means they are related
You cant use DNA to see if they are related
They are more related if they have less DNA in common
What are homologous structures?
Structures that are left over and aren't needed anymore
They are used to determine how old something is
They are similar structures that are evidence of a common ancestor
They are used to show chromosomal differences between species
What conditions are necessary for natural selection?
Small population
there needs to be genetic variation
the environment must not be changing
the population needs to be completely identical
How does genetic recombination affect evolution?
it decreases genetic variation and slows evolution
it stops gene flow
it doesnt
it increases genetic variation by creating new genes
How does genetic drift affect a small population?
it will create more genetic diversity
it increases the alleles in the population
it reduces genetic diversity
it causes a new species to form
What were the first organisms that developed on earth?
eukaryotic and aerobic
prokaryotic and aerobic
eukaryotic and anaerobic
prokaryotic and anaerobic
Why is the Miller-Urey theory widely accepted
because it demonstrates spontaneous generation
there are a lot of organic molecules around
because it's the newest
the process was demonstrated in a lab
What type of evidence for evolution involves biochemical analysis of the organism?
DNA
Analogous structures
embryology
Fossil record
Which explains the link between jaw size and hominid evolution?
The jaws evolved to be larger over time
the jaws did not change
the size of the jaw changed due to brain size
the jaws are smaller and less protruding over time
What human evolutionary trait led to the development of complex language?
larger brains
smaller jaws
flatter faces
wider mouths
What kind of population would be most affected by genetic drift?
large population with little genetic diversity
small population with little genetic diversity
large population with a lot of genetic diversity
small population with a lot of diversity
Which is true about evolution?
it causes the same changes in all species in the same area
it always results in favorable traits
it leads to less complex organisms
it does not always make species that will keep surviving
