CHEMICAL ELEMENTS IN A HUMAN BODY

Most of human body is composed of ...

• Hydrogen

• Carbon

• Water

• Calcium

This element is not from "big 7" elements list:

• Carbon

• Iron

• Calcium

• Phosphorus

Where in a human body you can't find oxygen?

• carbohydrates

• proteins

• fats

• oxygen can be found everywhere in a human body

Organic compounds are made of carbon

• True

• False

There is no nitrogen in a

• DNA

• proteins

• water

• nucleic acids

Calcium is one of the main building blocks for our

..... and .......

• teeth

• muscles

• skin

• bones

Phosphorus can be found in

• ATP molecule

• bones

• teeth

• blood

This element plays the main role in carrying nerve

impulses and in keeping blood pressure.

• Oxygen

• Hydrogen

• Potassium

• Carbon

Where in the body are most of the iron located?

• blood

• bones

• teeth

• muscles