3b Movement Across Plasma Membrane II

The process by which the ion moves across the plasma membrane is known as

What is osmosis?

Which of the following processes involved in the movement of water and mineral ions into root hairs?

Which of the following processes is involved in the gaseous exchange in an alveolus?

The following are the steps involved in the active transport of sodium ions.

W – The ATP molecule is split into adenosine diphosphate (ADP) and phosphate (P)
X – The carrier protein binds to the sodium ions
Y – The carrier protein releases the sodium ions outside the cell
Z – Energy from the ATP changes the shape of the carrier protein

Which of the following is the correct sequence for the step involved?

The diagram shows the appearance of a plant cell which has been put into a particular solution. What is the process experienced by the cell?

The diagram above shows the appearance of red blood cells after they are placed in different type of solutions. What are solution P, Q and R?

A few strips of potato of the same length are immersed in 0.1% sucrose solution. After 1 hour they become turgid and firm because

Two types of cells; plant cell and red blood cell are placed in solutions P and Q respectively. After 25 minutes, the condition of the two types of cells was observed under a microscope.

Which of the following is true about solutions P and Q compared with the initial concentration of the cell?

The diagram shows the appearance of three strips of mustard green, M, N and K after they are immersed in different concentrations of sodium chloride solutions for an hour. The condition of the solutions for the strips of M, N and K is likely to be…