Biology

A living thing.

• organism

• cell

• response

• stimulus

The basic unit of structure and function in living things.

• organism

• cell

• response

• stimulus

Any change or signal in the environment that can make an organism react in some way.

• organism

• cell

• response

• stimulus

An action or change in behavior that occurs as a result of a stimulus.

• organism

• cell

• response

• stimulus

__________ organisms consist of many cells. Humans are __________ organisms with trillions of cells specialized to do certain tasks.

• single celled

• multicellular

The most common chemical in cells is ___________, which is essential for life.

• carbohydrates

• water

• protein

• lipids

Means becoming larger

• growth

• development

• maturity

_______________ is change that leads to maturity

• growth

• development

• maturity

All organisms need ________ to power their cells.

• stimuli

• energy

• sunlight

• to eat

Some organisms, called __________, can get energy from sunlight in a process known as photosynthesis.

• producers

• consumers

• decomposers