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 ●​ Cell Wall

●​ 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