In Star Trek, what colour is Mr Spock's blood?
Purple | Blue | Green | Red
Which organ pumps blood around the body?
Which animal group has fur, warm blood and suckles its young?
When measuring blood pressure, which is the higher number?
Diastolic | Systolic
"The Strain" is a horror book series focused on which type of blood-sucking monsters?
What colour was the owl and the pussycat's boat?
Pea green | Carrot orange | Apple red | Banana yellow
Is colour blindness more common in men or women?
Men | Women
What colour berets do the United Nations peacekeeping forces wear?
What colour is a Welsh poppy?
Yellow | Red | Purple | Blue
What colour does litmus paper turn in the presence of acid?
Green | Blue | Red
