Cell interactions Chapter 6

What is required for osmosis?

• Active Transport

• the membrane must be impermeable to the solute

• Na+/K+ channels

• ATP is required

• high heat capacity

Which membrane transport moves molecules from higher to lower without using ATP?

• Secondary Active Transport

• Active Transport

• Carrier-Mediated Transport

• Passive Transport

• Primary Active Transport

______ of the body's water is in the Intracellular compartment.

______ of the body's water is in the extracellular compartment.

Solutions with a lower solute concentration than the cell are hypotonic.

• True

• False

Charged ions can enter the cell by using a protein channel in a cell membrane that allows ONLY that particular ion to pass.

• True

• False

What type of small molecules and lipid-soluble molecules do NOT pass through a cell membrane?

• Glucose

• Carbon dioxide

• Steroid hormones

• Oxygen

Which of the following consists of a solvent and a solute?

• channel proteins

• osmotic pressure

• solution

• tonicity

• carrier proteins

Large water-soluble molecules cannot pass through the membrane by simple diffusion but they can get through by using carrier proteins.

• True

• False

Osmosis is different than diffusion because in osmosis, water moves instead of particles, and there has to be a membrane involved.

• True

• False