Cells: Smallest Unit of Life

What is the best description of the connection between cells and living things?

• The bigger the living thing is the bigger cells it has making it more complex.

• Anything living has to be made of AT LEAST two cells.

• Cells are the smallest living thing, the basic unit of life and make up all living things.

• There is only one kind of cell and it makes up all living things.

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Which is something we know to be true about cells?

• A cell is the smallest living unit, so there can be unicellular organisms and multicellular organisms.

• In order for something to be alive it has to be made of multiple cells.

• Cells are made of smaller living parts named organelles that have individual jobs.

• Cells are only considered alive if a group of them are working together.

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Which of the following is an example of gathering evidence to support the claim, all living things are made of cells?

• Compare a non living thing and a living thing and notice the different characteristics of both.

• Made sample slides of things you believe are living and examine them under the microscope to look for cells.

• We should examine something that isn't alive to see what it is made of because it isn't made of cells.

• Test how a living thing responds to stimulus and then write down the results.

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If you as students examined living things and nonliving things closely to try to determine that they are made of smaller parts, which is the best evidence that would support that living things, rather than non-living, are made of cells? Smaller parts of living things-

• Are layered closely together to form the organism.

• We can see if we look with a microscope.

• Look about the same size.

• Perform functions to sustain life in living things.

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NGSS.MS-LS1-1

Why can it be so difficult to identify cells and learn about their organelles?

• They are very small and difficult to examine without a microscope.

• We didn't know about cells for a long time.

• Nonliving and living things are made of cells so there are to many kinds to study.

• Cells are not possible to see even with a strong microscope.

What is the smallest LIVING unit of life?

• Atom

• Tissue

• Organ

• Cell

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This is a type of cell with a nucleus.

• Eukaryote Eu-True

• Prokaryote Pro-Before

These are the smallest type of cells and lack a nucleus.

• Eukaryote

• Prokarytoe

Stephen looked at human cheek cells through a microscope; he saw a nucleus inside each of the cells. Stephen was looking at

• A piece of skin.

• Eukaryote Cells

• Prokaryote Cells

• Air Bubbles

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Bacteria are unicellular organisms that do not have a nucleus; we can classify them as

• Prokaryotic Organisms

• Animals

• Eukaryotic Organisms.

• Healthy germs