7th Grade Science Guide

7.3: Structures & Function of Life 3 Dimensions & Progressions

Unit 4

STANDARD ● 7.3.2 Develop and use a model to describe the function of a cell in living systems and the way parts of cells contribute to cell function . Emphasize the cell as a system, including the interrelating roles of the nucleus, chloroplasts, mitochondria, cell membrane, and cell wall. (MS-LS2-2)

CONCEPTS

SKILLS

● Function of a cell ● Parts of Cells

● Develop a model

LEARNING PROGRESSIONS

● Cells are made of smaller parts called organelles ● Particular functions of parts of the cell contribute to the overall cell function. ● Plant cells have a cell wall & chloroplast, animal cells don’t ● Cell wall and chloroplast have special functions that only plants need ● Cell membrane is an important feature in allowing things to pass into and out of the cell, leading to the overall functioning of an organism.

VOCABULARY

● Structure ● Function ● Cell ● System ● Organelle

● Nucleus ● Chloroplast ● Mitochondria ● Cell membrane ● CellWall

● Ribosome ● Lysosome ● Endoplasmic reticulum ● Golgi

POSSIBLE PHENOMENA ● The leaves of a plant are typically green, but the roots are typically not green. ● Red blood cells do not have a nucleus. ● When you soak pieces of carrot in a saturated salt solution, after 20 minutes, the carrots weigh less. END OF UNIT COMPETENCY WITH LANGUAGE SUPPORTS ● I can make a model showing different parts of the cell and describe how they work together to form a system.

DIFFERENTIATION IN ACTION

● Parts of an animal Cell ● Parts of a plant cell ● Function of cells in the human body

Skill Building