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How each exam board covers it

AQA GCSE Biology · 8461

Specification 4.1.2.1, 4.1.2.2, 4.6.1.4, 4.6.1.6, 4.6.3.3 · Paper 1, Paper 2

A structure made from a long DNA molecule that carries many genes.
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.
Revise: Chromosomes
Revise: Mitosis and Cell Cycle
A structure containing a long, tightly coiled DNA molecule.
Revise: DNA and Genome

2 more notes

A structure made of DNA that carries genes.
Revise: Key Vocabulary and Principles of Genetic Inheritance
A thread-like structure made from DNA and found in the nucleus of a cell; chromosomes carry genes.
Revise: Understanding Genetics

AQA Biology past papers

Edexcel GCSE Biology · 1BI0

Specification 2.3, 3.3, 3.5, 3.13 · Paper 1

A tightly coiled structure made from DNA that carries genetic information.
Each daughter cell has a set of chromosomes in its nucleus that is identical to the set in the parent cell. The two daughter cells are therefore genetically identical to the parent cell and to each other.
Revise: Division by Mitosis
A highly coiled DNA structure that carries genetic information and is found in the nucleus of a eukaryotic cell.
Revise: Meiosis
A long, packaged DNA molecule that carries many genes.
Revise: Genome and Genes

1 more note

A structure made of DNA that carries genes. Chromosomes occur in pairs in most body cells.
Revise: Genetic Terminology

Edexcel Biology past papers

OCR GCSE Biology A · J247

Specification B1.1b, B2.1b, B5.1a, B5.1b, B5.1g · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

DNA packaged into a structure that carries genes.
In plant and animal cells, most DNA is packaged into chromosomes inside the nucleus. These instructions help control the cell’s activities. Ribosomes are the sites of protein synthesis, where proteins are made using genetic instructions.
Revise: Sub-cellular structures
A structure made from DNA that carries genetic information.
Revise: Mitosis and the cell cycle
A long DNA molecule, packaged with proteins, that carries many genes.
Revise: Genetic terms

2 more notes

A package of tightly coiled DNA.
Revise: Genome
A structure containing a long DNA molecule that carries genes.
Revise: Haploid and diploid

OCR Biology A past papers

OCR GCSE Biology B · J257

Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

A structure made from a long molecule of DNA; in most organisms, the genome is packaged into chromosomes.
“Entire” is important—it means all of that organism’s genetic material considered together, not just one chromosome or one gene.
Revise: The Genome
A long DNA molecule that carries many genes; in plant and animal cells, chromosomes are found in the nucleus and usually occur in pairs.
Revise: Genetic Terminology
A structure made from DNA that carries genetic information.
Revise: Cell Cycle and Mitosis

OCR Biology B past papers

Exam tips

1
Keep the levels of organisation in the correct order: nucleus → chromosomes → DNA → genes.
2
Do not write that chromosomes are made of genes. Chromosomes are made of DNA; genes are sections of that DNA.
3
If asked about body cells, state that chromosomes are normally found in pairs. Do not assume this applies to gametes such as egg and sperm cells.

How each exam board covers it

AQA GCSE Biology · 8461

Specification 4.1.2.1, 4.1.2.2, 4.6.1.4, 4.6.1.6, 4.6.3.3 · Paper 1, Paper 2

A structure made from a long DNA molecule that carries many genes.
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.
Revise: Chromosomes
Revise: Mitosis and Cell Cycle
A structure containing a long, tightly coiled DNA molecule.
Revise: DNA and Genome

2 more notes

A structure made of DNA that carries genes.
Revise: Key Vocabulary and Principles of Genetic Inheritance
A thread-like structure made from DNA and found in the nucleus of a cell; chromosomes carry genes.
Revise: Understanding Genetics

AQA Biology past papers

Edexcel GCSE Biology · 1BI0

Specification 2.3, 3.3, 3.5, 3.13 · Paper 1

A tightly coiled structure made from DNA that carries genetic information.
Each daughter cell has a set of chromosomes in its nucleus that is identical to the set in the parent cell. The two daughter cells are therefore genetically identical to the parent cell and to each other.
Revise: Division by Mitosis
A highly coiled DNA structure that carries genetic information and is found in the nucleus of a eukaryotic cell.
Revise: Meiosis
A long, packaged DNA molecule that carries many genes.
Revise: Genome and Genes

1 more note

A structure made of DNA that carries genes. Chromosomes occur in pairs in most body cells.
Revise: Genetic Terminology

Edexcel Biology past papers

OCR GCSE Biology A · J247

Specification B1.1b, B2.1b, B5.1a, B5.1b, B5.1g · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

DNA packaged into a structure that carries genes.
In plant and animal cells, most DNA is packaged into chromosomes inside the nucleus. These instructions help control the cell’s activities. Ribosomes are the sites of protein synthesis, where proteins are made using genetic instructions.
Revise: Sub-cellular structures
A structure made from DNA that carries genetic information.
Revise: Mitosis and the cell cycle
A long DNA molecule, packaged with proteins, that carries many genes.
Revise: Genetic terms

2 more notes

A package of tightly coiled DNA.
Revise: Genome
A structure containing a long DNA molecule that carries genes.
Revise: Haploid and diploid

OCR Biology A past papers

OCR GCSE Biology B · J257

Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

A structure made from a long molecule of DNA; in most organisms, the genome is packaged into chromosomes.
“Entire” is important—it means all of that organism’s genetic material considered together, not just one chromosome or one gene.
Revise: The Genome
A long DNA molecule that carries many genes; in plant and animal cells, chromosomes are found in the nucleus and usually occur in pairs.
Revise: Genetic Terminology
A structure made from DNA that carries genetic information.
Revise: Cell Cycle and Mitosis

OCR Biology B past papers

Exam tips

1
Keep the levels of organisation in the correct order: nucleus → chromosomes → DNA → genes.
2
Do not write that chromosomes are made of genes. Chromosomes are made of DNA; genes are sections of that DNA.
3
If asked about body cells, state that chromosomes are normally found in pairs. Do not assume this applies to gametes such as egg and sperm cells.

Chromosome

Definition

How each exam board covers it

AQA GCSE Biology · 8461

Edexcel GCSE Biology · 1BI0

OCR GCSE Biology A · J247

OCR GCSE Biology B · J257

Exam tips

Revise Biology with GradeGen

Chromosome

Definition

How each exam board covers it

AQA GCSE Biology · 8461

Edexcel GCSE Biology · 1BI0

OCR GCSE Biology A · J247

OCR GCSE Biology B · J257

Exam tips

Revise Biology with GradeGen

Definition

How each exam board covers it

AQA GCSE Biology · 8461

Edexcel GCSE Biology · 1BI0

OCR GCSE Biology A · J247

OCR GCSE Biology B · J257

Exam tips

Related key terms

Revise Biology with GradeGen

Definition

How each exam board covers it

AQA GCSE Biology · 8461

Edexcel GCSE Biology · 1BI0

OCR GCSE Biology A · J247

OCR GCSE Biology B · J257

Exam tips

Related key terms

Revise Biology with GradeGen