Cell Biology Concepts and Functions

The video explores the smallest creations in the world, from dwarf willows to bumble bee bats. It discusses the invention of the microscope, which revealed a microscopic world, and the discovery of cells by Robert Hook. The video explains the differences between unicellular and multicellular organisms, and the types of cells: prokaryotic and eukaryotic. It concludes with how cells form tissues, organs, and systems in the human body.

Which of the following is the smallest tree in the world?

• Bonsai

• Redwood

• Dwarf Willow

• Bamboo

How small can the human eye see without assistance?

• 10 millimeters

• 0.01 millimeters

• 1 millimeter

• 0.1 millimeters

What is the weight of the bumblebee bat?

• 5 grams

• 10 grams

• 1 gram

• 2 grams

What was the significant discovery made by Robert Hook using a microscope?

• Molecules

• Cells

• Atoms

• Viruses

What is the significance of the microscope in scientific discovery?

• It was used to discover gravity.

• It allowed the discovery of atoms.

• It enabled the observation of microscopic organisms.

• It helped in the invention of the telescope.

What is a key difference between unicellular and multicellular organisms?

• Multicellular organisms are less complex.

• Unicellular organisms have multiple cells.

• Multicellular organisms cannot survive cell death.

• Unicellular organisms have only one cell.

Which type of cell contains a membrane-bound nucleus?

• Prokaryotic

• Eukaryotic

• Bacterial

• Viral

What is the main role of the nucleus in a eukaryotic cell?

• To control cell activities

• To transport nutrients

• To store energy

• To protect the cell

What is the primary function of red blood cells?

• To store energy

• To form a protective barrier

• To transport oxygen

• To protect the body from infections

What is the primary function of skin cells?

• To transport oxygen

• To form a protective barrier

• To store nutrients

• To produce energy