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The molecule that carries genetic information.

The molecule that carries genetic information and from which chromosomes are made.

Inside the nucleus are chromosomes, which are structures made from long DNA molecules. DNA carries genetic information—the biological instructions involved in determining how cells and organisms develop and function.

The chemical that carries genetic information; it is a polymer made of two strands forming a double helix.

Keep the levels of organisation in the correct order: nucleus → chromosomes → DNA → genes.

Do not write that chromosomes are made of genes. Chromosomes are made of DNA; genes are sections of that DNA.

When describing DNA’s structure, include all three points: it is a polymer, it has two strands, and the strands form a double helix.

The chemical that carries genetic information. Its two strands form a double helix.

A molecule that carries genetic information and consists of two nucleotide strands coiled into a double helix.

DNA stands for deoxyribonucleic acid. It is the molecule that carries genetic information. DNA is a polymer, meaning that it is a long molecule assembled from many smaller repeating subunits.

The molecule that carries genetic information in its sequence of bases.

The biological polymer that stores genetic information in cells; its information provides a code used to make proteins.

The diagram is a simplified model of the polymer idea rather than a picture of DNA’s detailed molecular or three-dimensional structure. It shows the important relationship: many smaller repeating units join to form one much larger molecule.

The chemical that carries genetic information in living organisms; its full name is deoxyribonucleic acid.

A molecule made of two strands of nucleotides twisted into a double helix; the order of its bases carries genetic instructions.

A long molecule that forms chromosomes and carries genetic information.

For example, a gene is a particular section of DNA. A genome contains many genes as well as other DNA, so the two terms are not interchangeable. A useful comparison is that a gene is one selected passage, while the genome is the complete collection of genetic information.

The molecule that carries genetic information; it is a polymer made from nucleotides.

DNA

Definition

How each exam board covers it

AQA GCSE Biology · 8461

Exam tips

Revise Biology with GradeGen

Edexcel GCSE Biology · 1BI0

OCR GCSE Biology A · J247

OCR GCSE Biology B · J257