TEKS

7.12 Organisms and environments. The student knows that living systems at all levels of organization demonstrate the complementary nature of structure and function. The student is expected to:

• 7.12C recognize levels of organization in plants and animals, including cells, tissues, organs, organ systems, and organisms.
• 7.12D differentiate between structure and function in plant and animal cell organelles, including cell membrane, cell wall, nucleus, cytoplasm, mitochondrion, chloroplast, and vacuole.
• 7.12F recognize that according to cell theory all organisms are composed of cells and cells carry on similar functions such as extracting energy from food to sustain life.

7.7 Force, motion, and energy. The student knows that there is a relationship among force, motion, and energy. The student is expected to:

• 7.7C. demonstrate and illustrate forces that affect motion in everyday life such as turgor pressure.