Elements of Living Organisms

Question 1

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

Revolt · Accepted Answer

element

Question 2

Which organisms transform nitrogen to a form that is useful to plants?

Revolt · Accepted Answer

bacteria

Question 3

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

Revolt · Accepted Answer

beans and whey protein.

Question 4

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?

Revolt · Accepted Answer

Each piece contains the same proportion of different elements.

Question 5

Which is the central element for all living things?

Revolt · Accepted Answer

carbon

Question 6

What is the basic unit of matter?

Revolt · Accepted Answer

atom

Question 7

Before using any chemical in the lab, why should one first read the Material Safety Data Sheet (MSDS)?

Revolt · Accepted Answer

The MSDS provides information on safe handling of the chemical.

Question 8

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

Revolt · Accepted Answer

phosphorus

Question 9

Which substance is a compound?

Revolt · Accepted Answer

water

Question 10

Which statement correctly describes glucose (C6H12O6)?

Revolt · Accepted Answer

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

Elements of Living Organisms Answers

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