Cell Organelles and Functions: Understanding Skin Cells, Mitochondria, Plastids, and Vacuoles

The video tutorial explores the structure and function of cell organelles, focusing on skin cells, mitochondria, and plant cell organelles. It explains how human skin cells are formed and shed, the role of mitochondria in energy production, and the unique organelles found in plant cells, such as plastids and vacuoles. The tutorial concludes with a recap of cell organelles and an introduction to tissues as the next level of cellular organization.

How long does it take for new skin cells to reach the top layer of human skin?

• Two weeks

• Two months

• One month

• One week

What is the primary function of mitochondria in a cell?

• Waste removal

• Protein synthesis

• Energy production

• DNA replication

What is the purpose of the inner membrane folds in mitochondria?

• To store DNA

• To increase surface area for energy production

• To protect the cell

• To transport proteins

Which molecule is known as the energy currency of the cell?

• Glucose

• ATP

• FADH2

• NADH

What unique feature does mitochondria have compared to other organelles?

• It lacks DNA

• It can produce its own proteins

• It is found only in plant cells

• It has a single membrane

Which type of plastid is responsible for the green color in plants?

• Amyloplast

• Chloroplast

• Leucoplast

• Chromoplast

What is the main function of leucoplasts in plant cells?

• Photosynthesis

• Storing proteins

• Providing color

• Storing pigments

What percentage of a plant cell's volume can the vacuole occupy?

• 20%

• 50%

• 80%

• 100%

What process involves the release of water from plant cells through the vacuole?

• Fermentation

• Respiration

• Photosynthesis

• Transpiration

What happens to a plant when the vacuole's water level is low?

• It wilts

• It changes color

• It becomes more rigid

• It grows faster