Essential definitions, key terminology, and fundamental biological concepts for the IBDP Biology curriculum. Focuses on Topic A (Unity and Diversity) and Topic B (Form and Function) basics aligned with command terms.
20 cards
Front
**Define** the term "cell" in the context of living organisms.
Back
A cell is the basic structural and functional unit of all living organisms. It is the smallest unit of life that can replicate independently. Cells are often called the 'building blocks of life'.
Front
**Distinguish** between prokaryotic and eukaryotic cells.
Back
**Prokaryotic** cells lack a membrane-bound nucleus and organelles (e.g., bacteria). **Eukaryotic** cells possess a membrane-bound nucleus that houses DNA and membrane-bound organelles (e.g., plant and animal cells).
Front
**Outline** the function of the cell membrane (plasma membrane).
Back
The cell membrane regulates the movement of substances in and out of the cell. It acts as a selective barrier, maintaining homeostasis by controlling the entry of nutrients and the removal of waste.
Front
**Identify** the main functions of the nucleus.
Back
The nucleus contains the cell's genetic material (DNA) and controls the cell's growth, metabolism, and reproduction by regulating gene expression. It is the site of transcription (mRNA synthesis).
Front
**State** the primary function of mitochondria.
Back
Mitochondria are the sites of cellular respiration, where organic molecules are broken down to release energy in the form of ATP. They are often referred to as the 'powerhouse' of the cell.
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