Elements of Living Organisms

What is the basic unit of matter?

• atom

• molecule

• gas

• compound

Tags

NGSS.HS-PS1-7

Which term describes a pure substance that is made up of only one type of atom?

• matter

• rock

• compound

• element

Which substance is a compound?

• water

• gold

• oxygen

• hydrogen

Tags

NGSS.MS-PS1-1

Which statement correctly describes glucose (C6H12O6)?

• It is made of matter and contains twenty-four molecules.

• It is an element made of three types of atoms.

• It is an atom made up of carbon, hydrogen, and oxygen.

• It is a compound made of twenty-four total atoms.

Tags

NGSS.HS-LS1-6

Students are each given a 20-gram sample of an unknown solid compound in a clear plastic bag. They are instructed to break the material into smaller parts by gently hitting it with a hammer. Some of the parts break into large chunks and some look like a fine powder.

Which statement correctly describes these broken pieces of the sample?

• The fine powder pieces are individual atoms broken from the solid.

• The larger pieces are still compounds and the smaller pieces are elements.

• Each piece contains the same number of atoms.

• Each piece contains the same proportion of different elements.

Which is one of the six fundamental elements that are found in living organisms?

• helium

• sodium

• oxygen

• chlorine

Which of these elements is found in both carbohydrates and water?

• carbon

• oxygen

• nitrogen

• helium

The most abundant element in the atmosphere can also be found in

• white sugar and soy protein.

• fruits and hydrogenated oils.

• carbonated water and glucose.

• beans and whey protein.

A new organism is discovered at the bottom of the ocean. A scientist is determining the composition of elements found in the tissues of the organism.

Which elements will most likely be found?

• carbon, hydrogen, nitrogen, and oxygen

• carbon, nitrogen, aluminum, and gold

• silver, gold, argentum, and sulfur

• carbon, nitrogen, oxygen, and argentum

Tags

NGSS.HS-LS1-6

Which element provides strength to the exoskeletons of clams and oysters?

• sulfur

• oxygen

• hydrogen

• phosphorus