passive transport

Which of the following statements are true regarding passive transport?

Charged ions cannot pass through a cell membrane via passive transport. / Carbon dioxide can pass through a cell membrane via passive transport.

Sugar crosses the cell membrane from an area of high concentration to an area of low concentration using special proteins embedded in the membrane.

Facilitated diffusion.

In which direction do substances move during passive transport?

From high to low concentration

Which of the following answer choices best describes the image above?

Passive transport; no energy input; simple diffusion; with the concentration gradient.

Which of the following statements about passive transport is true?

Substances move along their concentration gradients.

The image below shows atoms of helium gas in a box, separated by a permeable membrane.

The atoms will move from left to right.

The image below shows atoms of fluorine gas in a box, separated by a permeable membrane.

The atoms will move from top to bottom.

The image below shows molecules of nitrogen gas in a box, separated by a permeable membrane.

The molecules will continue to move across the membrane, but their overall distribution will remain relatively equal on both sides of the membrane.

The image below shows molecules of oxygen gas in a box, separated by a permeable membrane.

The molecules will move from an area of high concentration to an area of low concentration without any energy input.

Which of the statements is true of facilitated diffusion?

Transport occurs with the help of membrane proteins.

What helps substances cross the cell membrane during facilitated diffusion?

proteins.

Which of the following is an example of facilitated diffusion?

water moves out of the cell passing through channel proteins in the cell membrane.