Cell Structure and Function Concepts

The video reviews chapters 4 and 5, covering cell theory, cell diversity, and internal organization. It explains the differences between prokaryotic and eukaryotic cells, the structure and function of the cell membrane, and how cells maintain homeostasis. The video also discusses passive transport, including diffusion and osmosis, and active transport mechanisms like the sodium-potassium pump. Additionally, it covers endocytosis and exocytosis processes.

Which of the following is NOT a part of the cell theory?

• Cells arise from pre-existing cells.

• All living things are made of cells.

• Cells can arise spontaneously.

• The cell is the basic unit of life.

What determines the function of a cell?

• Its color

• Its shape

• Its temperature

• Its age

Which of the following is a characteristic of prokaryotic cells?

• They are multicellular.

• They lack a nucleus.

• They have membrane-bound organelles.

• They have a nucleus.

What does 'selectively permeable' mean in the context of cell membranes?

• Allows all substances to pass through

• Allows no substances to pass through

• Allows some substances to pass through while blocking others

• Allows only water to pass through

Which organelle is responsible for photosynthesis in plant cells?

• Nucleus

• Ribosome

• Mitochondria

• Chloroplast

What is the primary function of organelles within a cell?

• To store genetic information

• To provide energy

• To transport nutrients

• To maintain homeostasis

What is the main difference between diffusion and osmosis?

• Diffusion requires energy, osmosis does not.

• Osmosis requires energy, diffusion does not.

• Osmosis involves water, diffusion does not.

• Diffusion involves water, osmosis does not.

In a hypertonic solution, what happens to a cell?

• It remains the same

• It shrinks

• It bursts

• It swells

What is the role of ATP in active transport?

• It acts as a channel

• It provides energy

• It acts as a barrier

• It provides structure

What is endocytosis?

• The process of a cell dying

• The process of a cell dividing

• The process of a cell taking in substances

• The process of a cell releasing substances