Cell Biology Concepts and Discoveries

This video tutorial by Mrs. De Lo So introduces the study of cells, known as cytology. It covers the contributions of key scientists like Robert Hooke, Anton van Leeuwenhoek, and Robert Brown in the discovery of cells and the development of the cell theory. The video explains the three principles of cell theory and discusses the levels of cellular organization, from single cells to complex organ systems.

Who was the first scientist to use a compound light microscope to observe cells?

• Anton van Leeuwenhoek

• Matthias Schleiden

• Robert Hooke

• Robert Brown

What did Anton van Leeuwenhoek observe under the microscope?

• Dead cells

• Living cells

• Nucleus

• Cell walls

Which scientist is credited with describing the nucleus in cells?

• Robert Hooke

• Anton van Leeuwenhoek

• Rudolf Virchow

• Robert Brown

What is the first principle of the cell theory?

• Cells contain a nucleus

• All cells come from pre-existing cells

• Cells are the basic unit of all living things

• Cells perform all functions of living things

Which of the following is NOT a function performed by cells?

• Absorption

• Photosynthesis

• Digestion

• Respiration

What is the process called when cells reproduce by dividing?

• Cellular differentiation

• Cellular fusion

• Cellular division

• Cellular mutation

What term is used for a single-celled organism?

• Bicellular

• Colonial

• Multicellular

• Unicellular

How are tissues formed in multicellular organisms?

• By grouping cells with similar functions

• By separating cells

• By combining different organs

• By merging organ systems

What is an example of a colonial organism?

• Human

• Mouse

• Elephant

• Volvox

Which of the following is part of an organ system?

• Cell

• Nucleus

• Tissue

• Organ