Classification systems are used to indicate evolutionary relationships among organisms. Modern classification systems are based upon ___.

Which idea about evolution was held by Darwin but not by Lamarck?

Charles Darwin proposed his theory of evolution based on observations of nature. Which observation that contributed to his theory is illustrated by differences in appearance within populations of organisms? (ex. Patterns of beatles)

Which is the greatest threat to biodiversity?

Which is a conclusion drawn from the observed DNA similarities found between apes and chimpanzees?

Fossils help scientists classify extinct species and determine their relationships to current species. Fossils provide the most information about extinct species' __.

When penicillin was first introduced, it was very effective in destroying most of the bacteria that cause gonorrhea. Today, certain varieties of this bacterium are resistant to penicillin. Which statement best explains the resistant varieties?

In terms of ecological organization, how is an ecosystem different from a population?

In general, which trophic level has the most energy available to it?

The fossil record supports which of the following descriptions of the evolution of life on Earth?

Which level of ecological organization contains all other levels?

Cellular respiration, decomposition, combustion, and photosynthesis are processes that drive which of the following cycles in ecosystems?

If the following organisms were arranged in a food pyramid, which organism would have the least amount of total energy available? shrub, lizard, insect, or coyote?

What will most likely happen if decomposers are removed from the carbon cycle?

Which of the following human activities modify our environment?

A photosynthetic, autotrophic organism that contains a cell wall, cell membrane, nucleus, and chloroplasts, most likely belongs to which of the following kingdoms?

An organism that has a cell wall but no nucleus and lives without oxygen in extreme environments most likely belongs to which of the follwing kingdoms?

Organisms in this kingdom are heterotrophic, have a cell wall, cell membrane, and nucleus, but no chloroplasts, and obtain their energy through absorption.

A branching diagram that shows evolutionary relationships among organisms based upon common ancestry and shared characteristics is called a __.

Viruses and living cells have many similarites and differences. Which of the following is an important similarity?

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