In Star Trek, what colour is Mr Spock's blood?
Purple | Blue | Red | Green
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?
Systolic | Diastolic
"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 | Banana yellow | Apple red
Is colour blindness more common in men or women?
Women | Men
What colour berets do the United Nations peacekeeping forces wear?
What colour is a Welsh poppy?
Purple | Blue | Red | Yellow
What colour does litmus paper turn in the presence of acid?
Blue | Green | Red
