This protein makes the blood red in color?

More Questions:

A "top-sider" is a type of what?

Eric Arthur Blair was the real name of which author?

Which famous adventure story features an Inn called "The Black Spot"?

What cartoonist of "Maus" also created "Topps Garbage Pail Kids"?

What is the occupation of Mary Poppins?

Which US state has the least rainfall?

What type of dog is known as the "King of the Terriers"?

What is the sixth planet from the Sun?

Which bees in a hive are there to fertilize the queen?

Who directed the classic horror film "The Birds"?

What is Mr. Belvedere's given name?

Who had a surprise cameo as "Agent M" in "Men in Black II"?

How many seasons of the TV show "The Beverly Hillbillies" were filmed in black and white?

Which actor played the role of Trinity in the movie "The Matrix"?

Who played the blind character in the movie "Daredevil"?