Biology test 1

Select all of the following that are characteristics of a scientific theory.

-can be used to make predictions -encompass multiple hypotheses -falsifiable -supported by a large body of evidence

Select all the questions that are difficult to answer using science.

-questions about morality -questions about the meaning of life

What is taxonomy?

The science of naming and classifying organisms

Organisms seem so well-suited to their environments because they have inherited characteristics or behaviors, called ______, that enable them to successfully survive and reproduce.

adaptations

Rank the following levels of biological organization from smallest at the top to largest at the bottom.

atom, molecule, organelle, cell, tissue, organ

Particles that make up molecules are called

atoms

A living thing, or organism, exhibits certain properties of life and is composed of one or more ______, the basic units of life.

cells

What is the term for all the populations of different species that occupy the same location at the same time?

community

heterotroph that obtains energy and nutrients by eating other organisms

consumer

heterotroph that obtains energy and nutrients from wastes and dead organisms

decomposer

In the scientific method, a(n) ______ is an investigation carried out under controlled conditions to test a hypothesis.

experiment

What describes the state of internal constancy maintained by an organism?

homeostasis

What is a group of joined atoms, such as deoxyribonucleic acid (DNA)?

molecule

A leaf is composed of several tissues organized to work together and is a(n) ______ of a plant.

organ

What is a structure consisting of tissues organized to interact and carry out specific functions?

organ

Compartments within cells that carry out specific functions are called

organelles

A(n) ______ is a living individual that consists of one or more cells.

organism

What term refers to members of the same species living in the same place at the same time?

population

autotroph that obtains energy and nutrients from nonliving sources

primary producer

Organisms that make their own food by obtaining energy and nutrients from nonliving sources are called

primary producers

What uses evidence and experiments to test ideas and answer questions?

scientific method

Advances in ______, such as DNA sequencers and radio-tracking devices, have enhanced biological discovery.

technology

A(n) ______ is an explanation for a natural phenomenon that has been well tested and ties together many hypotheses.

theory

In an experiment, the response that an investigator measures and the treatment that an investigator manipulates are examples of

variables