Elements of Life

The study of the chemical processes of living things is called ________________.

• Earth Science

• Physics

• Biochemistry

• Entomology

What is a a pure substance that can’t be broken down chemically ?

• Atom

• Molecule

• Element

• Cells

What is the abbreviation for the 6 elements that make up almost all of the weight of an organism?

• SNOPES

• CHNOPS

• KHDMDCM

• ZNMGFE

Select the four characteristics of Carbon that make it an important element of life.

• Forms the backbone for all of the organic molecules found in living things.

• Found in water

• Found in all organic molecules.

• Forms chains or rings

• Carbon can form 4 covalent bonds

What essential element for the body is also the most abundant element on Earth ?

• Carbon

• Hydrogen

• Nitrogen

• Oxygen

Select the four characteristics of Hydrogen that make it an essential element for life.

• Found in water

• Found in all organic molecules

• Can only bond form 1 bond

• Required for aerobic respiration

• Most abundant (by number) element in the body

Select the four characteristics of Oxygen that make it an essential element for life.

• Found in most organic molecules

• 2 chemical bonds available

• A majority of this oxygen comes from water in your body

• Required for anaerobic respiration

• Required for aerobic respiration

What element makes up about 65% of our body mass?

• Nitrogen

• Hydrogen

• Zinc

• Oxygen

Select two characteristics of Nitrogen.

• Found in proteins, DNA, and ATP

• Creates a carbohydrates

• N is gas that makes up 78% of the Earth’s atmosphere

• Found in water

Select the two characteristics of Nitrogen that make it essential for life.

• An element found in water.

• Usually found in molecules, not as a pure element because it’s very reactive

• Found in nucleic acids and ATP

• Make up 95% of body mass