When cells have specific jobs to carry out and the work is divided, this is known as:

The basic unit of structure and function for the body.

What is the most complex level of organization?

Justin has learned that the brain, spinal cord, and peripheral nerves work together. What do they combine to form?

Three examples of levels of organization smaller than a cell

Which is the correct structural order?

Atoms,molecules, and macromolecules make up which level of structural organization?

Basic unit of ALL living things

Tissue type that protects the body by covering internal and external surfaces AND produces secretions (sweat, hormones)

One of these is NOT a vital function. Which one is it?

The vital functions include:

It is important for any organism to maintain its boundaries, so that its internal environment remains distinct from the external environment surrounding it.

Responsiveness or irritability is the ability to sense changes in the environment and then respond to them.

Water is not important to bodily functions.

All of the following are characteristics of growth except _____.

Of the eight necessary life functions, which of the following is not required for an individual's survival?

If you consider your home air conditioner in terms of homeostasis, then the wall thermostat would be the ________.

A tissue consists of groups of similar cells that have a common function.

The uterus, also called the womb, is the place where the embryo and fetus are nourished.