(ROUGH DRAFT) Biology 1st Semester Final Exam Review

Biology is the study of

• the land, water, and air on Earth

• the living world

• animals and plants only

Which of the following is NOT a characteristic of living things?

• growth and development

• ability to move

• ability to reproduce

Which of the following characteristics of living things best explains why some birds fly south for the winter?

• living things respond to their environment

• living things maintain internal balance

• living things are made up of units called cells

The process by which organisms keep their internal conditions relatively stable is called .

• homeostasis

• evolution

• photosynthesis

Which level of organization includes all of the other levels?

• ecosystem

• population

• community

To observe a small, living organism, a scientist might use a(an)

• electronic balance

• compound light mircroscope

• electron microscope

The smallest units are considered to be alive are

• cells

• molecules

• organisms

The chemical reactions through which an organism builds or breaks down materials as it carries out its life process is called

• sythesis

• metabolism

• decomposition

A well tested and supported explanation that unifies a broad range of observations is call a

• hypothesis

• theory

• inference

A possible explanation for a set of observations, also know as an educated guess, is called

• hypothesis

• theory

• inference