Chapter 1 Review

Scientists use scientific thinking to test...

• data

• hypotheses

• observations

• conclusions

Which is true about a dependent variable in an experiment?

• It is the experimental data

• It never changes during an experiment

• It is manipulated by a scientist

• It is not affected by the independent variable

When scientists are "evaluating results" as part of scientific thinking, they mainly...

• explain data they collected and analyzed

• collect data from other scientists

• examine prior research on a topic

• use statistics to analyze their data

Scientific theories can change when scientists...

• prepare and test different hypotheses

• provide conflicting scientific evidence

• criticize existing data

• prove an alternate theory

Which of the following statements is true of the many parts of the biosphere?

• each part is isolated from the others

• each part is connected to all others

• each part is completely unique

• each part includes salt water

On Earth, biodiversity generally increases from the...

• poles to the equator

• east to west

• equator to the rainforest

• north to south

Only individuals belonging to the same species are able to...

• respond to stimuli the same way

• use similar metabolic processes

• inhabit a particular ecosystem

• reproduce by interbreeding

Organisms use energy for all chemical processes. Together, all of these processes are called...

• metabolism

• adaptation

• negative feedback

• homeostasis

Which is the correct description of evolution?

• relationship between organisms' structure and function

• change in the genetic makeup of a population over time

• beneficial trait that's passed to future generations

• change in biodiversity across Earth's surface

Which phrase best describes an ecosystem?

• all living things and the places on Earth where they are found

• variety of organisms on Earth or in an area of the biosphere

• organisms interacting with each other and nonliving things

• a group of living things that can interbreed to reproduce