Unit one Key Area Four

Question 1

Moral values that ought to govern human conduct.

Answer 1

Ethics

Question 2

Common source of tissue (adult) stem cells in humans.

Answer 2

Bone marrow

Question 3

Early human embryo composed of unspecialised cells.

Answer 3

Blastocyst

Question 4

Term describing the use of stem cells in the repair of damaged or diseased organs.

Answer 4

Therapeutic

Question 5

Type of stem cell capable of differentiating into a limited range of an animal’s cell types.

Answer 5

Tissue (adult) stem cell

Question 6

Type of stem cell capable of differentiating into all of an animal’s cell types.

Answer 6

Embryonic stem cell

Question 7

Group of unspecialised plant cells capable of dividing repeatedly throughout the life of the plant.

Answer 7

Meristem

Question 8

Process of cell specialisation involving the selective switching off and on of certain genes.

Answer 8

Differentaition

Question 9

Cell that has become differentiated and only expresses genes for proteins specific to that cell type.

Answer 9

Specialised