Biology
Earth Science
Chemistry
Physics
Anatomy
100

This level of organization is the smallest unit of life.

What is a cell?

100

This term describes changes in a population’s allele frequencies over time.

What is biological evolution?

100

This scientific naming system uses two names: genus and species.

What is binomial nomenclature?

100

An organism that makes its own food using sunlight.

What is a producer (autotroph)?

100

This is the name of the protein coat of viruses

What is a capsid?

200

These structures have no current function and are evidence of evolutionary history.

What are vestigial structures?

200

The broadest taxonomic level that includes Archaea, Bacteria, and Eukarya.

What is a domain?

200

Limiting factors that affect populations regardless of size, such as droughts or floods.

What are density-independent factors?

200

Only this percent of energy transfers from one trophic level to the next.

What is 10%?

200

These organisms consume both plants and animals

What are omnivores?


300

This type of population growth forms an S-shaped curve due to limiting factors.

What is logistic growth?

300

Bird species that don’t interbreed because of different mating songs demonstrate this type of isolation.

What is behavioral isolation?

300

An organism with a nucleus, a cell wall made of chitin, and that gains energy through digestion belongs to this kingdom.

What is Fungi?

300

This process begins succession on bare rock after volcanic eruptions.

What is primary succession?

300

The viral cycle where the host cell is immediately destroyed.

What is the lytic cycle?

400

Structures that have similar anatomy due to common ancestry but different functions.

What are homologous structures?

400

This trophic level is not shown in most food webs but is essential for recycling matter. Includes detritovores and saprotrophs.

What are decomposers?

400

If two animals share the same Class, they also share these levels of classification.

What are Domain, Kingdom, and Phylum?
400

This pattern suggests long periods of stability (no change) interrupted by rapid evolutionary change

What is punctuated equilibrium?

400

This bacterial process converts atmospheric nitrogen into a usable form

What is nitrogen fixation?

500

Unrelated species evolving similar traits due to similar environments is known as this.

What is convergent evolution?

500

This pattern of evolution originates from a common ancestor, and deviates from there (finches)

What is divergent evolution?

500

This type of reproductive isolation occurs when populations are separated by rivers, mountains, or other physical barriers.

What is geographic isolation?

500

If grass has 1,000 kcal, this is how much energy is available to a tertiary consumer.

What is 10 kilocalories?

500

This is the maximum population size an environment can consistently support.

What is carrying capacity?