Gr 8 Cells Study Sheet PDF
Document Details
Uploaded by Deleted User
Tags
Summary
This is a study sheet on cells, focusing on diffusion, osmosis, unicellular organisms (like bacteria and protists), and multicellular organisms (such as humans and plants), It covers basic concepts relating to the characteristics of living things and how cells function.
Full Transcript
Gr 8 Study Sheet- Cells Diffusion: - Particles of a liquid or gas make the shift from a highly concentrated area to a less concentrated area - Must be able to draw a picture of what it looks like Cell Connection: - In cells, substances need to fo in and/ or out of the cell t...
Gr 8 Study Sheet- Cells Diffusion: - Particles of a liquid or gas make the shift from a highly concentrated area to a less concentrated area - Must be able to draw a picture of what it looks like Cell Connection: - In cells, substances need to fo in and/ or out of the cell through selectively permeable membrane -selectively permeable - the ability of the cell membrane to control the flow of substances in and out of the cell. Osmosis: molecules move from area to another , high or low concentration area Cell Connection: Osmosis allows water molecules to flow and to be transported through the cell membrane Unicellular - one cell organisms - They can live on your own - Types of unicellular organisms: diatoms, bacteria, fungi , yeast and amoebae - They can move, get their own nutrients and exchange gas independently Multicellular - more than one cell on its own. They can divide and reproduce - Can be invertebrates ( no backbone) or vertebrates ( backbones) Know examples for both - - People are multicellular- all of the body’s systems work together to perform a function Animals - Able to get their food from other living things - Digestive system breaks components into smaller parts that provide energy for the body - Humans Plants - When plants need food they use photosynthesis to produce energy and get nutrients - Six Characteristics ALL Living Things must have: Made of cells Need energy Grow and develop Respond to the environment Reproduce Adaptations for their environment Similarities between plant and animal cell Both have nucleus, cell membrane , cytoplasm, vacuoles, Golgi apparatus Differences Plants have a cell wall, chloroplasts only in plant cells Animal cells have Lysosomes - help nutrients and food digest properly
