Cell Structure and Function Concepts

Dr. Alice introduces cells and cell theory, explaining that cells are the smallest unit of life. She describes the structure of cells, including the plasma membrane, cytosol, organelles, and nucleus. The video discusses the diversity of cells, highlighting different types and their functions. The cell theory is explained, emphasizing that cells arise from other cells and are essential for organism function. Finally, the video covers extracellular components like fluids and the extracellular matrix.

What is the smallest unit of life?

• Tissue

• Organ

• Organism

• Cell

Which part of the cell acts as a barrier between the inside and outside?

• Ribosome

• Plasma membrane

• Cytosol

• Nucleus

What is the function of the nucleus in a cell?

• Energy production

• Waste removal

• Protein synthesis

• DNA storage

Approximately how many different types of cells are there in the human body?

• 50

• 100

• 250

• 500

What determines the function of a cell?

• Its size

• Its shape and organelles

• Its color

• Its location

According to cell theory, where do new cells come from?

• Spontaneous generation

• Other cells

• Non-living matter

• Chemical reactions

Why is it important for cells to function correctly?

• To produce more cells

• To change shape

• To ensure organismal health

• To maintain body temperature

What is the role of interstitial fluid?

• To transport oxygen

• To fill spaces between cells

• To store energy

• To digest food

What is the extracellular matrix composed of?

• DNA and RNA

• Proteins and sugars

• Lipids and water

• Vitamins and minerals

Which fluid is found inside blood vessels but outside red blood cells?

• Lymph

• Plasma

• Interstitial fluid

• Cytosol