Cell Biology - Introduction to cell - Cells Structure

The video tutorial introduces cells as the fundamental unit of life, explaining their role in forming living organisms. It covers the discovery of cells by Robert Hooke in 1665 and describes the features of cells, including their number, shape, and size. The tutorial also discusses the fascinating property of cell regeneration and concludes with an exercise for students to identify different types of cells in the human body.

Who is credited with the discovery of cells?

• Charles Darwin

• Gregor Mendel

• Robert Hooke

• Louis Pasteur

What is the primary difference between unicellular and multicellular organisms?

• Unicellular organisms have one cell, while multicellular organisms have multiple cells.

• Unicellular organisms are larger than multicellular organisms.

• Unicellular organisms have multiple cells, while multicellular organisms have one cell.

• Unicellular organisms do not perform any functions.

What determines the shape of a cell?

• The size of the organism

• The type of organism

• The cell membrane

• The number of cells

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

• Human

• Tiger

• Amoeba

• Elephant

What is the size range of a typical bacterial cell?

• 10 to 50 micrometers

• 1 to 5 millimeters

• 0.1 to 0.5 micrometers

• 100 to 500 micrometers

Which cell is known to be the largest in size?

• Bacterial cell

• Ostrich egg cell

• Red blood cell

• Human nerve cell

What is the fascinating property of cells that allows them to heal wounds?

• Digestion

• Photosynthesis

• Regeneration

• Respiration