Which of the following is correct about carbon monoxide? Mark all that apply.

Catalysts facilitate chemical reactions by: Mark all that apply.

A three-inch iron nail equals the amount of iron a typical adult human has inside their body.

Most of the elemental iron found in the human body is stored in the:

Horseshoe crabs and octopuses have blue blood. Which of the following is correct about their blood? Mark all that apply.

What organ stores excess bile?

Which type of hemoglobin has a lower absorption of red wavelengths of light?  

Carbon monoxide is a common by-product of burning fossil fuels: gasoline, diesel, and natural gas).

What organ of the body makes bile?

What percent of the carbon dioxide transported by the blood from the tissues to the lungs is carried by hemoglobin?