Biology 10 Vocabulary

Question 0

Selectively Permeable

Answer 0

Allows certain particles to pass through, but not all particles.

Question 1

Cytoplasmic Streaming

Answer 1

Distribution of materials within cells through a circular flow of the cytoplasm.

Question 2

Cytoskeleton

Answer 2

Network of protein fibres that supports cells that contain a nucleus.

Question 3

Concentration Gradient

Answer 3

Determines the direction in which water or solutes will move. The difference within a given area between the highest and lowest concentration of a particular substance.

Question 4

Hypertonic

Answer 4

A solution that has a higher concentration of solutes than that in the cell, is hypertonic to the cell. Water will leave cell.

Question 5

Hypotonic

Answer 5

A solution that has a lower concentration of solutes than that in the cell, is considered hypotonic to the cell. Water will enter the cell, because there is a lower water:solute ratio in the cell. Water is needed to balance that out.

Question 6

Isotonic

Answer 6

A solution that has the same concentration of solutes in a solution as that in the cell. No net movement of water.

Question 7

Carrier Proteins

Answer 7

A protein present in a cell membrane that binds it to a specific molecule and transports it through the membrane. They attach to larger molecules and change shape to physically move molecules across membranes. Then they return to their original shape.

Question 8

Channel Protein

Answer 8

A protein in the cell membrane that forms a passageway through which specific solutes can pass by diffusion. Some channels open and close in response to binding of specific molecules.