Ch. 1 An Introduction to Biology

Jan. 21

What is the systematic study of the natural world through observation and experimentation called?

Science

The branch of science that studies living organisms is known as __________.

Biology

The smallest unit of matter that retains the properties of an element is called __________.

Atom

Two or more atoms bonded together form a __________.

Molecule

The basic structural and functional unit of all living organisms is the __________.

Cell

A group of similar cells working together to perform a specific function is called __________.

Tissue

A structure made up of different types of tissues that work together is referred to as an __________.

Organ

A group of organs that work together to perform a larger function in the body is known as an __________.

Organ System

An individual living thing, which can be unicellular or multicellular, is termed an __________.

Organism

A group of individuals of the same species living in the same area is called a __________.

Population

All the populations of different species that live and interact in the same area is called a __________.

Community

A community of living organisms interacting with their physical environment is known as an __________.

Ecosystem

The sum of all ecosystems on Earth is referred to as the __________.

Biosphere

Anything that has mass and takes up space is called __________.

Matter

The ability to do work or cause change is referred to as __________.

Energy

A testable and falsifiable explanation for an observation is termed a __________.

Hypothesis

A well-substantiated explanation of an aspect of the natural world is called a __________.

Theory

A statement that describes a consistent relationship observed in nature is known as a __________.

Law