18 Questions
What is the term for a solution with a low concentration of solutes?
Low osmolarity
What happens to cells in a hypotonic solution?
They swell due to water entering the cell
What is the purpose of NaCl in rehydration remedies?
To prevent water intoxication
What is the term for a solution with a high concentration of solutes?
Hypertonic
What happens to cells in a hypertonic solution?
They shrink due to water leaving the cell
Why can drinking too much water without balancing it with salt intake be problematic?
It can cause cells to swell, leading to cerebral edema
What is the main function of carrier proteins in a cell?
To facilitate the transport of specific molecules across the cell membrane
Which type of transport requires energy from ATP?
Active transport
What is the term for the 'tug of war' between the inside and outside of a cell, where water moves in or out to balance the solute concentration?
Tonicity
Which of the following is an example of a channel protein?
Potassium channel
What happens to a cell in a hypotonic solution?
It swells due to water gain
What is the term for the measure of the number of particles in a solution?
Osmolarity
What is the main cause of hydrostatic pressure?
The weight and motion of fluid
What is the function of hydrostatic pressure in the body?
To push blood through the vessels
What happens when osmotic pressure is unequal and Doris is given hypertonic fluid?
Water is drawn out of the cells
What is the main function of osmotic pressure in the body?
To regulate the movement of water between cells and the bloodstream
What happens when osmotic pressure is unequal and Doris is given hypotonic fluid?
Water is drawn into the cells
What is the analogy for osmotic pressure?
The pull of a sponge
Learn about the different types of transport mechanisms in cells, including active transport and the role of channel proteins, such as potassium, sodium, and calcium. Discover how molecules like glucose, amino acids, and serotonin are transported across the cell membrane.
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