B2.1

Question 1

Diffusion

Answer 1

Net movement from an area of high concentration to an area of low concentration

Question 2

Osmosis

Answer 2

Diffusion of water molecules from an area of high to low concentration through a partially permeable membrane

Question 3

Hypertonic

Answer 3

Solute concentration is higher outside, water concentration is lower outside

Question 4

Isotonic

Answer 4

Solute and water concentration is the same inside and outside

Question 5

Hypotonic

Answer 5

Solute concentration is lower outside, water concentration is higher outside

Question 6

Solute

Answer 6

Substance that dissolves in a solution

Question 7

Solution

Answer 7

Mix of solute and solvent

Question 8

Active transport

Answer 8

Movement of molecules against their concentration gradient

Question 9

Carrier proteins

Answer 9

Special proteins used in active transport that are specialised and span the width of the cell

Question 10

Concentration gradient

Answer 10

Difference in concentration between 2 regions

Question 11

Gene

Answer 11

Section of DNA which codes for a characteristic

Question 12

Allele

Answer 12

Different version of the same gene

Question 13

Nucleus

Answer 13

Sub-cellular structure that controls the cell and contains the genetic material

Question 14

Chromosome

Answer 14

Strand of DNA containing genes

Question 15

Specialised

Answer 15

A cell that is adapted to perform a specific function

Question 16

Stem cell

Answer 16

Undifferentiated cell