BIOLOGY! HELP
1. Some people believe that gaps in the fossil record between one species and its ancestor are evidence that evolution is not true. The following are valid arguments against this belief, except:
a. fossil record does not contain every species that ever existed.
b. every fossil in the fossil record hasn't been discovered yet
c. homologues structures, similar embryonic structures, and similarities in organic molecules still provide evidence for evolution.
d. structural similarities are enough evidence of the evolutionary relation between species.
2. Species A and Species B live in a marine environment, have radial symmetry, and have primitive brains. Species C is terrestrial, has bilateral symmetry, and a complex brain. The genetic sequence of Species B is more similar to Species C. What is the most accurate evolutionary relationship between these three species?
a. none are related
b. only species B and C share common ancestor
c. species B and C are more closely related
d. species A is the ancestor of species B and C
3. How do scientists mainly use Molecular Biology to provide evidence of evolutionary relationships between two groups of organisms?
a. comparing base sequences in genes
b. comparing phospholipids in cell membranes
c. comparing ratios of elements in their biomolecules
d. comparing structures of their carbohydrate molecules
4. Some people believe that gaps in the fossil record between one species and its ancestor are evidence that evolution is not true. The following are valid arguments against this belief, except:
a. fossil records don't contain every species that existed
b. every fossil in the fossil record hasn't been discovered yet
c. homologous structures, like embryonic structures, and similarities in organic molecules still provide evidence for evolution.
d. structural similarities are enough evidence of the evolutionary relation between species.
5. The diagram compares several structures in the forelimb of four animals. Which of the following statements is true according to the evidence in the diagram?
a. carpals in humans are vestigial, or remnants of ancestors that are no longer used
b. these animals evolved from common ancestor
c. whale and bat are more closely related than human and cat
d. carpals will disappear in future generations of bats