Benchmark 5C
The Living Environment: Cells
Grades 3-5, page 111

Some living things consist of a single cell. Like familiar organisms, they need food, water, and air; a way to dispose of waste; and an environment they can live in.

NSES Content Standard C 
Life Science: The characteristics of organisms
Grades K-4, page 129
Organisms have basic needs. For example, animals need air, water, and food; plants require air, water, nutrients, and light. Organisms can survive only in environments in which their needs can be met. The world has many different environments, and distinct environments support the life of different types of organisms.

NSES Content Standard C 
Life Science: Structure and function in living systems
Grades 5-8, page 156
All organisms are composed of cells--the fundamental unit of life. Most organisms are single cells; other organisms, including humans, are multicellular.