The Nature of Science & Cell Theory
This theory states that all living things are made of one or more cells, cells are the basic unit of life, and all cells come from pre-existing cells.
What is the Cell Theory?
This organelle controls all cell activities and contains genetic material.
What is the nucleus?
This green organelle allows plants to make their own food through photosynthesis.
What is the chloroplast?
The basic unit of structure and function in all living things.
What is a cell?
An organism made up of only one cell is called what?
What is unicellular?
This type of scientific knowledge explains why things happen in nature and can change with new evidence.
What is a theory?
This gel-like material fills the cell and holds the organelles in place.
What is the cytoplasm?
This thick outer layer gives plant cells structure and support.
What is the cell wall?
A group of similar cells that work together to perform a specific function.
What is a tissue
An organism made up of many cells is called what?
What is multicellular?
This type of scientific knowledge describes what happens in nature, often using mathematical relationships.
What is a law?
These organelles are known as the “powerhouses” of the cell because they produce energy.
What are mitochondria?
Plant cells have one large one of these to store water; animal cells have many small ones.
What is a vacuole?
Two or more tissues that work together to perform a specific function.
What is an organ?
Give one example of a unicellular organism and one example of a multicellular organism.
Unicellular: Amoeba or bacteria; Multicellular: Human or tree.
The invention and improvement of this technology helped scientists discover and study cells.
What is the microscope?
This organelle helps package and transport materials throughout the cell.
What is the endoplasmic reticulum?
This organelle is found in both plant and animal cells and is responsible for breaking down food to release energy.
What is the mitochondrion?
Organ systems working together form this level of organization.
What is an organism?
In multicellular organisms, this concept explains how cells perform different roles to maintain life.
What is division of labor?
The cell theory has changed over time as new evidence was discovered. This demonstrates that science is both based on evidence and subject to change—this is called what?
What is the nature of science?
This cell part is found in all cells and controls what enters and leaves the cell.
What is the cell membrane?
Give one major structural difference and one major functional difference between plant and animal cells.
Plant cells have cell walls and chloroplasts; animal cells do not. Plants make food; animals consume food.
Explain how a cell’s form fits its function using an example.
Example: Nerve cells are long to carry messages; red blood cells are round and flexible to travel through vessels.
Explain how unicellular and multicellular organisms carry out life processes differently.
Unicellular organisms do all life processes within one cell; multicellular organisms have specialized cells and systems that share the work.