Unit 1 Vocabulary revision (for data test)

Movement of substances across a membrane without energy expenditure

• Endocytosis

• Passive transport

• Active transport

• Osmosis

The passive movement of water molecules across a cell membrane

• Facilitated Diffusion

• Tonicity

• Osmosis

• Plasmolysis

Having a higher concentration of solutes relative to another solution

• Hypertonic

• Hypotonic

• Diffusion

• Concentrated solution

Which is the most advantageous Surface Area : Volume ratio?

• It does not matter, more important is the shape

• 3.5 : 1

• 6 : 1

• 1 : 1

A dilute solution is

• more concentrated

• less concentrated

• the same concentration

Phagocytosis is

• cell death arising from a loss of water

• a form of bulk active transport (cell eating)

The concentration of solutes is equal on both sides of a membrane. The cell is in a(n) ................................... solution.

• hypertonic

• isotonic

• hypotonic

• equal

Which type of organic molecule facilitates transport through the plasma membrane?

• Lipids

• Protein

• Carbohydrate

• Nucleic acid

What type of organic molecule is sucrose?

• Carbohydrate

• Protein

• Lipid

• Nucleic acid

Result of placing an animal cell in a strong hypotonic solution

• Cell shrinks

• Turgor

• Plasmolysis

• Cytolysis