Lesson Notes By Weeks and Term v4 - JHS 1
LIVING CELLS
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LIVING CELLS
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Subject: Science
Class: JHS 1
Term: 1st Term
Week: 5
Grade code: B7.1.2.1.1
Strand code: 1
Sub-strand code: 2
Content standard code: B7.1.2.1
Indicator code: B7.1.2.1.1
Theme: DIVERSITY OF MATTER
Subtheme: LIVING CELLS
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All living things in our environment—humans, goats, chickens, fish, insects—are made of cells. Cells are the smallest units that can carry out life processes such as feeding, breathing (respiration), growth, excretion and reproduction. Understanding animal cells helps learners to understand health issues common in Ghana (e.g., wound healing, infections, malaria affecting blood cells), growth, and how our bodies function.
2.1 What is a cell? A cell is the basic structural and functional unit of living things. Structural: Cells form the body parts (tissues and organs). Functional: Cells perform life processes (respiration, growth, reproduction, etc.).
Cell Theory (JHS level) All living things are made up of one or more cells. The cell is the basic unit of structure and function in living things. New cells come from existing cells (by cell division). 2.2 Animal cells (focus of this indicator) An animal cell is a type of cell found in animals (including humans). It is usually: Irregular or roundish in shape (not fixed). Surrounded by a cell membrane (not a cell wall). Has a nucleus and other organelles.
> Note: Plant cells have a cell wall and chloroplasts; animal cells do not. This lesson focuses on animal cells.
2.3 Structure of an animal cell and functions of organelles