Meaning: "biological" means about living things.

Wrong options:

• biologial: It leaves out the "c". The right spelling is "biological". Every letter must be correct to get the mark.
• biologica: It leaves out the "l". The right spelling is "biological". Every letter must be correct to get the mark.

Correct answer: connections

Explanation: You hear "the connections between chemistry". You need more than one, so do not forget the s at the end.

Meaning: "connections" means links or relations between things.

Wrong options:

• connection: "connection" has no "s" at the end. The speaker says "connections", so write the "s".
• connetions: It leaves out the "c". Check the letters: "connections". A small spelling mistake loses the mark.

Correct answer: molecules

Explanation: Listen for "the molecules that are relevant". It comes after "the", so you need a word for a thing, more than one.

Meaning: "molecules" means the tiny parts that make up matter and bodies.

Wrong options:

• molecule: "molecule" has no "s" at the end. The speaker says "molecules", so write the "s".
• molecues: It leaves out the "l". Write "molecules". Only the exact spelling gets the mark.

Correct answer: energy

Explanation: On the recording you hear "how energy plays a role". You need a short common word for a thing, person or idea.

Meaning: "energy" means the power used in body processes.

Wrong options:

• energry: It adds an extra "r". Check the letters: "energy". A small spelling mistake loses the mark.
• energies: "energies" is a close word, but it ends in "ies". The speaker says "energy", which ends in "y".

Correct answer: matter

Explanation: Listen again to "about matter". The word after "about" is a thing, so use the basic form.

Meaning: "matter" means physical substance or material.

Wrong options:

• mater: It leaves out the "t". Write "matter". Only the exact spelling gets the mark.
• matters: "matters" has an extra "s" at the end. The speaker says "matter", with no "s".