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Cells 1.1

Living THings Cells Gr. 7

QuestionAnswer
What is an organism? A living thing.
What is a cell? The basic unit of structure and function in all living things.
What is the smallest unit of life? A cell.
What is a microscope? A tool that allows scientists to view things too small to see with the unaided eye.
What does unicellular mean? Made up of only one cell.
What does multicellular mean? Made up of more than one cell.
What is evidence in scientific investigations? Information or observations scientists gather to support scientific explanations.
How are living things different from nonliving things according to the slides? Living things are organisms made of one or more cells.
What are the three statements of cell theory? A cell is the basic structure of all living things; all new cells come from pre-existing cells; all living things are made of one or more cells.
According to cell theory, where do new cells come from? Pre-existing cells.
According to cell theory, how many cells make up a living thing? One or more cells.
Why are cells important to living things? Cells are the basic unit of structure and function in all living things.
Is an organism made of just one cell still a living thing? Yes. All living things have one or more cells.
Who discovered cells and what year? Robert Hooke in 1665
What tool did Robert Hooke use to view cells? A microscope.
Why was the microscope important to the discovery of cells? Cells were too small to see with the unaided human eye.
How did Hooke and other scientists develop cell theory? They used evidence they gathered.
Could Robert Hooke see cells with only his unaided eyes? No. Cells were too small to see without a microscope.
How many cells does a unicellular organism have? One cell.
Name four examples of unicellular organisms? Amoebas, algae, bacteria, and yeasts.
Is a bacterium unicellular or multicellular? Unicellular.
Is yeast listed as unicellular or multicellular? Unicellular.
How many cells does a multicellular organism have? More than one cell.
Name four examples of multicellular organisms? Butterflies, mushrooms, horses, and wildflowers.
Is a butterfly unicellular or multicellular? Multicellular.
Is a mushroom unicellular or multicellular? Multicellular.
What do cells in multicellular organisms do? They are specialized and work together to keep the organism alive.
What is the main difference between unicellular and multicellular organisms? Unicellular organisms have one cell; multicellular organisms have more than one cell.
A scientist observes an organism made of one cell. How should it be classified? Unicellular.
A scientist observes specialized cells working together in an organism. How should it be classified? Multicellular.
About how much more powerful are electron microscopes than light microscopes? Almost 5,000 times more powerful.
What do electron microscopes allow scientists to do? Make more detailed observations of cells.
How has improved microscope technology changed scientists’ understanding of cells? It has allowed more detailed observations and new discoveries.
What scientific theory has continued to develop as cell technology advances? Modern cell theory.
Why do advances in cellular technology matter? They help scientists make new discoveries about cells.
Created by: taragaiss
 

 



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