Biochemistry (with metabolism)

All living things on Earth use which element as the "backbone" of their molecules?

• Oxygen

• Hydrogen

• Nitrogen

• Carbon

In CHNOPS, what does the S stand for?

• Sulfur

• Synthesis

• Silicon

• Substrate

What kind of bond forms when atoms SHARE electrons?

• ionic

• covalent

• artificial

• Hydrogen

What type of model is shown?

• chemical formula

• space-filling

• structural model

• ball and stick

How many Oxygen atoms are in this molecule?

• there's no way to tell

• 2

• 21

• 11

Two oxygen atoms bond together to create Oxygen gas. Which term best describes this type of matter?

• molecule

• compound

• element

• ion

Which letter represents the partially negative end?

• A

• B

• C

• D

This ability allows water to travel up from the roots of a plant against the pull of gravity.

• heat capacity

• capillarity

• cohesion

• osmosis

The attraction of water molecules to other water molecules.

• adhesion

• capillarity

• cohesion

• density

The reason a swimming pool stays warm for a few weeks into the fall.

• heat capacity of the water

• heat capacity of the air

• surface tension of the water

• density of the water