Cell Membrane

Which part of the cell controls the movement of substances?

• Cell membrane

• Nucleus

• Cytoplasm

• Mitochondria

What is the name of the substances that make up cell membranes?

• Nucleic acid

• Glycerol

• Phospholipids

How many layers of phospholipids make up the cell membrane?

• 1

• 2

• 3

• 4

TRUE OR FALSE. Phospholipids have a hydrophobic tail that repels water

• True

• False

What is the role of cholesterol in the cell membrane?

• To help substances go into the cell

• To help substances leave the cell

• To provide stability

TRUE OR FALSE. Channel proteins are an example of intrinsic proteins.

• True

• False

What was the term given to describe the arrangement of molecules in the cell membrane?

• Fluid jigsaw model

• Stable jigsaw model

• Fluid mosaic model

What is one role of cell surface markers?

• To allow substances to move out of the cell

• To communicate with other cells

• To organise the organelles

TRUE OR FALSE. Diffusion is the movement of substances from an area of low concentration to high concentration

• True

• False

Which method of transport requires energy?

• Diffusion

• Osmosis

• Facilitated Diffusion

• Active transport