Maap Science

When does diffusion occur across a cell membrane?

• when water moves across the membrane

• when the concentration of particles is different on each side of the membrane

• when the concentration of particles is equal on both sides of the membrane

• when there are no particles on either side of the membrane

Which of the following is a requirement for diffusion to take place?

• a transport protein

• a carrier molecule

• a concentration gradient

• a transport carbohydrate

Which two of the following processes require energy?

• exocytosis

• diffusion

• endocytosis

• osmosis

• facilitated diffusion

Water will move out of a cell when it is placed in which type of solution?

• hypotonic

• hypertonic

• ergonomic

• isotonic

Which of the following substances most easily travel through the phospholipid bilayer of a cell membrane?

• oxygen molecules

• sodium ions

• water molecules

• hormones

Which of the following is the cell organelle most responsible for maintaining cellular homeostasis?

• nucleus

• endoplasmic reticulum

• cell membrane

• Golgi complex

Tags

NGSS.HS-LS1-3

Why would an animal cell burst if it is surrounded by fresh water?

• because solutes will move out of the cell

• because water will move out of the cell

• because solutes will move into the cell

• because water will move into the cell

What is the diffusion of water across a selectively permeable membrane called?

• endocytosis

• facilitated diffusion

• osmosis

• active transport

Which of the following structures can be used to move small particles such as ions across the cell membrane via active transport?

• transport proteins

• aquaporins

• polar bodies

• phospholipids

The gill cells of a saltwater fish use active transport to move sodium ions out of the cells. The gill cells most likely use which of the following to remove sodium ions against the concentration gradient?

• a water molecule

• a chromosome

• a protein pump

• a phospholipid molecule