Exploring Rational Expressions: Addition and Subtraction

The video tutorial discusses cellular transport, focusing on concentration gradients and their effects on cells. It explains how a cell with an impermeable plasma membrane reacts to different solute concentrations inside and outside the cell. The tutorial highlights the concept of osmosis, where water moves to equalize concentrations, leading to changes in cell volume. The process is passive, requiring no energy, and results in equal solute concentrations inside and outside the cell.

What is the main topic discussed in the video?

• Cellular transport

• Genetic mutation

• Cellular respiration

• Photosynthesis

What happens if the internal and external concentrations are not the same?

• The cell will shrink

• The cell will divide

• The cell will remain the same

• A concentration gradient will form

What is the characteristic of the plasma membrane in the described cell?

• It is permeable to solutes

• It allows all molecules to pass

• It is selectively permeable

• It is impermeable to solutes

What is the solute concentration inside the cell?

• 88%

• 12%

• 2%

• 98%

What is the water concentration outside the cell?

• 2%

• 12%

• 88%

• 98%

What process describes the movement of water molecules?

• Active transport

• Diffusion

• Osmosis

• Facilitated diffusion

What type of solution is the cell in when water moves into it?

• Equitonic

• Hypotonic

• Hypertonic

• Isotonic

What is the result of water moving into the cell?

• The cell decreases in volume

• The cell bursts

• The cell increases in volume

• The cell remains the same

What is the nature of osmosis in terms of energy requirement?

• It requires energy

• It is an active process

• It is a passive process

• It requires ATP

What will the solute concentration equalize to after osmosis?

• 98%

• 12%

• 7%

• 2%