Cell Membrane and Transport Review

Cell membranes are constructed mainly of

• phospholipid bilayers

• protein pumps

• carbohydrate gates

• free-moving proteins

The movement of water molecules across a selectively permeable membrane is known as

• exocytosis

• diffusion

• endocytosis

• osmosis

A substance that moves across a cell membrane without using the cell's energy tends to move

• away from the area of equilibrium

• toward the area where it is more concentrated

• away from the area where it is less concentrated

• away from the area where it is more concentrated

Which process always involves the movement of materials from inside the cell to outside the cell?

• Endocytosis

• Exocytosis

• Diffusion

• Sodium-Potassium Pump

Tags

NGSS.HS-LS2-3

Which of the following is an example of active transport?

• Endocytosis

• Facilitated Diffusion

• Osmosis

• Diffusion

The property of the cell membrane that allows certain materials to pass through the cell while keeping others out is

• discrimination

• endocytosis

• selective permeability

• enzymatic process

Water leaves the tubules of the kidney in response to the hypertonic fluid surrounding the tubules. This is an example which illustrates Osmosis.

• True

• False

Tags

NGSS.HS-LS1-3

The process of moving materials through the cell membrane using energy from the cell is

• passive transport

• diffusion

• active transport

• osmosis

The process of molecules moving in and out of the cell through the cell membrane is best described as

• diffusion

• molecular transport

• mitosis

• cryogenesis

Which of the following structures is the cell's boundary from its environment?

• Mitochondria

• Cell membrane

• Chloroplast

• Nucleus