1. Which of the following is not a piece of molecular evidence supporting the endosymbiotic theory?

1. Which of the following is not a piece of molecular evidence supporting the endosymbiotic theory? A. Ribosomes of some organelles are like that of those found in bacteria.

B. Some organelles divide by fission just like bacteria.

C. Mitochondrial and chloroplast DNA is similar to bacterial DNA.

D. The mitochondria and chloroplasts are much different in structure than bacteria.

2. If a single mutation turns off the growth of some pairs of legs within an organism, what’s most likely affected?

A. A deleted gene

B. A Hox gene

C. A substituted gene

D. A duplicated gene

3. Which of the following is true regarding extinction?

A. Single events or several causes working together to produce extinction in a short period is referred to as mass extinction.

B. If the rate of speciation in a clade is equal to or less than the rate of extinction, the clade will survive.

C. Extinction that occurs in a relatively short period of time is referred to as background extinction.

D. The rate of extinction is steady from clade to clade as are the number of species contained within a clade.

4. Which of the following accurately describes a characteristic of fungi?

A. Parasitic fungi are responsible for helpful benefits to plant

B. Mutualistic fungi form symbiotic relationships with plants to form mycorrhizae.

C. Parasitic fungi often form symbiotic relationships with algae to form lichens.

D. Mutualistic fungi are responsible for producing some human diseases.

5. Unlike a lytic infection, a lysogenic infection

A. requires a virus to inserts its nucleic acid into a host cell’s DNA

B. involves a virus and its nucleic acid.

C. involves a host.

D. damages the host cell and causes it to burst

7. Molecular clocks

A. take advantage of the fact that all mutations affect the fitness of an organism.

B. take advantage of the fact that only neutral mutations do not happen at a steady rate.

C. take advantage of known mutation rates to estimate how long ago organisms shared a common ancestor.

D. take advantage of the fact that all mutations happen at a steady rate.

8. Classification of living things takes into consideration all of the following except

A. presence of a nucleus.

B. mode of nutrition.

C. presence of cell membranes.

D. number of cells.

9. Sexual reproduction

A. maintained the same gene combinations over time.

B. increased genetic variation.

C. helped maintain a slow rate of evolutionary change.

D. limited the material in which natural selection can act upon.

10. Which of the following statements accurately describes the process of dating Earth’s history?

A. Scientists use index fossils to determine the specific years of age of a new fossil.

B. Scientists use radiometric dating to determine the relative age of a new fossil.

C. Scientists use radioactive isotopes to determine the absolute age of a new fossil.

D. Scientists use relative dating to determine the absolute age of a new fossil.

11. Which one of the following diseases is caused by a virus? A. Strep throat

B. Tetanus

C. Hepatitis B

D. Tuberculosis

12. Limb bones within unrelated animals that have the same basic structures are considered A. embryological.

B. vestigial structures.

C. analogous structures.

D. homologous structures.

13. Which of the following best describes a cladogram?

A. The more closely related lineages are the farther the distance between them on a cladogram.

B. The goal of a cladogram is to show overall similarities and differences of species.

C. The goal of a cladogram is to show relationships and evolutionary descent between species.

D. A node represents the first point that two groups shared a common ancestor.

15. The Silurian period occurred

A. during the Hadean eon.

B. after the Permian era.

C. during the Mesozoic era.

D. before the Neogene period.

16. The continents began to drift apart by the end of the _______ period. A. Cretaceous

B. Neogene

C. Permian

D. Cambrian

17. Which of the following is not a source of genetic variation

A. Mutations

B. Sexual reproduction

C. Asexual reproduction

D. Lateral gene transfer

18. When two species exhibit different behaviors but live in the same area, what can result?

A. Behavioral isolation

B. Temporal isolation

C. Geographic isolation

D. Founder effect

19. Suppose that species A evolves and species B evolves in response to the changes in Specie A. Species A then changes in response to the changes in Species B. This is an example of

A. extinction.

B. convergent evolution.

C. adaptive radiation

D. coevolution.

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