Characteristics and Hierarchy of Life

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is the correct order of cellular hierarchy from simplest to most complex?

Back

Cell ⋙ Tissue ⋙ Organ ⋙ Organ System ⋙ Organism

Front

What is adhesion in the context of water molecules?

Back

Adhesion is the attraction between water molecules and other substances.

Front

What is a unicellular organism?

Back

An organism whose entire body is made up of only one cell.

Front

Why is water considered a polar molecule?

Back

Water is polar because the unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.

Front

What is the definition of cohesion?

Back

Cohesion is the attraction between molecules of the same substance, such as water molecules attracting each other.

Front

What is the definition of homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is an organ system?

Back

An organ system is a group of organs that work together to perform complex functions for the organism.

Front

What is the difference between unicellular and multicellular organisms?

Back

Unicellular organisms consist of a single cell, while multicellular organisms are made up of multiple cells that work together.

Front

What is the role of tissues in the hierarchy of life?

Back

Tissues are groups of similar cells that work together to perform a specific function.