Which of the following is the main evidence of life in the early universe?
question 1 options:

dinosaur fossils

rock layering

plant remains

cyanobacteria
5.17 unit test: history of life on earth, part 1 pool 2
question 2 (3 points)
question 2 unsaved

which of the following would have resulted from the functions of prokaryotes on early earth?
question 2 options:

earth's oceans grew larger

less oxygen gas became present in the atmosphere

less carbon became present in earth's soil

more oxygen gas became present in the atmosphere
5.17 unit test: history of life on earth, part 1 pool 3
question 3 (3 points)
question 3 unsaved

which of the following was most likely not present in creating the amino acids of early earth's waters of the past?
question 3 options:

sulfur

nitrogen

hydrogen

ammonia
5.17 unit test: history of life on earth, part 1 pool 4
question 4 (3 points)
question 4 unsaved

which of the following is used as evidence in supporting the idea that life changes over time?
question 4 options:

the big bang theory

the existence of homologous structures

the similarities in body systems such as the nervous and circulatory systems

the time period in which an embryo develops
5.17 unit test: history of life on earth, part 1 pool 5
question 5 (3 points)
question 5 unsaved

the diagram shows embryo development of four different animals. how is this evidence used to suggest that life changes over time?

history of life on earth
question 5 options:

late-stage embryonic development illustrates how acquired characteristics have caused these species to become more differentiated over time.

the dna of all these life forms begins exactly the same and then changes over time as it replicates to produce the organisms different traits.

these stages indicate that animals within a species must have changed over time.

striking similarities at early developmental stages is evidence that they came from a common ancestor.
5.17 unit test: history of life on earth, part 1 pool 6
question 6 (3 points)
question 6 unsaved

which of the following describes how homologous structures provide evidence to support that life changes over time?
question 6 options:

some animals exhibit similar structures, possibly due to a common ancestor

some animals exhibit similar stages of embryonic development

some animals exhibit structures that are no longer used for any purpose

some fossils exhibit similar biological proteins

question 7 (3 points)
question 7 unsaved

how can these forelimbs explain how life changes over time?

history of life on earth
question 7 options:

these illustrations show the progressive development of the forelimb in a species over time, one example of how life has changed over time.

these illustrations show the homologous forelimbs of four different species with enough similarities to suggest all had a common ancestor.

the illustrations show the vestigial structures of four different species that once had a function in an ancestral organism but no longer have a function today.

these illustrations show the variety of bone structures that exist among different species and how life has changed over time as new species develop.