Cell Signalling

Question 1

Hormone

Answer 1

Signalling molecule that carries messages to its specific target cells

Question 2

Neurotransmitters

Answer 2

Chemical signalling molecules of nerve cells

Question 3

Pheromones

Answer 3

Chemical signalling molecule released by one animal that can carry to a second member of the same species

Question 4

Reception

Answer 4

When a stimulus binds to a receptor

Question 5

Apoptosis

Answer 5

The natural, programmed death of cells

Question 6

Intrinsic pathway

Answer 6

Internally triggered

Question 7

Extrinsic pathway

Answer 7

Initiated by external sources

Question 8

Endocrine

Answer 8

Signal travels vast distances

Question 9

Paracrine

Answer 9

Message travels to an adjacent target cell

Question 10

Autocrine

Answer 10

Produces a signal that has an effect on itself

Question 11

Stimulus

Answer 11

Any change in the internal or external environment of a cell that causes a response in the cell.

Question 12

Insulin

Answer 12

Released by pancreas
Travels to liver
Stimulates liver to take up glucose
Glucose levels in blood drop