Cell Theory and Function Concepts

The video tutorial introduces biology students to cell theory, explaining its significance and the scientific basis behind it. It differentiates between a theory and a hypothesis, emphasizing the well-tested nature of theories. The tutorial covers the three main parts of cell theory: all living things are made of cells, cells are the basic unit of function, and cells come from other cells. Examples of unicellular and multicellular organisms are provided, along with explanations of cell function and organization. The video concludes with a discussion on cell reproduction and healing processes.

What is the main focus of the class when discussing cell theory?

• Memorizing the names of scientists

• Learning about the history of biology

• Understanding the cell theory itself

• Studying the anatomy of plants

Which of the following best describes a scientific theory?

• A guess based on limited evidence

• A well-tested explanation for a wide range of observations

• An untested idea

• A simple observation

How does a theory differ from a hypothesis?

• A hypothesis is a well-tested explanation

• A hypothesis is a scientific law

• A theory is more strongly backed by evidence

• A theory is less supported by evidence

What is the first part of the cell theory?

• Cells come from other cells

• Cells are the basic unit of function

• Cells are only found in animals

• All living things are made up of one or more cells

Which of the following is an example of a unicellular organism?

• Bacteria

• A human

• A baboon

• A plant

What determines the function of a cell?

• The size of the organism

• The color of the cell

• The shape of the cell

• The age of the organism

Which type of muscle cell is found in the heart?

• Voluntary muscle

• Smooth muscle

• Skeletal muscle

• Cardiac muscle

What is the third part of the cell theory?

• Cells come from other cells

• Cells are the basic unit of structure

• Cells are only found in plants

• All living things are made up of cells

How do unicellular organisms reproduce?

• By multiplying

• By forming seeds

• By budding

• By laying eggs

What happens when you cut your knee?

• Cells disappear

• Cells stop functioning

• Cells reproduce to heal the cut

• Cells change shape