Transcript Slide 1
Exploring Cell Shape and Function The Microscope vocabulary word! prokaryotes • prokaryote – cells that do not have a nucleus or membrane bound organelles. • Many unicellular organisms are prokaryote vocabulary word! eukaryotes • eukaryote – cells that do have a nucleus and membrane bound organelles vocabulary word! structure • structure - the way that something is built, arranged, or organized. function vocabulary word! • function - the special purpose or activity for which a thing exists or is used. Structure and Function Important facts and examples • The structure (shape) of most things is related to its function (job). – A wheel is round which is related to its function which is to roll. – A horse’s hoof is strong and is related to its function of carrying weight over hard ground. – A bird’s wing is shaped to provide lift which is related to its function of flying. Structure and Function Important facts • Plant and animal cells have different parts that have different functions for the organism. • Even cells within the same organism can differ from each other depending on their function. cheek epithelial cells Cheek epithelial cells are found inside the mouth. They create a smooth lining to cover the inside of the mouth. Create this table in your notes adipose cells (fat) Adipose cells (fat) are found in many places in the body. They store fat that the body can use for energy or insulation. Create this table in your notes muscle cell Muscle cells are long and thin but can contract into a short, fat shape. Skeletal muscles relax and contract to move the bones. Create this table in your notes bark cell Bark protects plants and trees and allows them to stand up and grow taller than if they did not have bark. Create this table in your notes leaf cell Leaf cells contain many chloroplasts so the plant can undergo photosynthesis. Create this table in your notes root cell Plant roots absorb water and minerals from the soil. They then help to transport these materials to the other parts of the plant. Notice there are no chloroplasts. Create this table in your notes