# Cell Organelle Flashcards: 24 Structures & Functions in Both Directions ![Abstract 3D cutaway of a eukaryotic cell with a nucleus, membrane networks, Golgi stacks, mitochondria, vesicles, and cytoskeletal strands\.]() Learn 24 common plant and animal cell structures with 48 two\-way flashcards linking each name to its primary function\. By author [Flashcards Open Source App]() [Study this deck for free]() Nibomo opens so you can start studying\. ## Deck details - Cards: 48 cards - Version: 1 - Published: August 23, 2026 - Last updated: September 10, 2026 - License: Common knowledge · CC0 1\.0 - Audience languages: [en]() - Subject: Biology - Tags: cell\-organelles ## About this deck These cell organelle flashcards cover 24 common structures encountered when studying plant and animal cells. The 48 text-only cards practice two mappings for every structure: the structure name to its primary function, and an unambiguous primary-function cue back to the name. The deck distinguishes shared eukaryotic structures from structures that are characteristic of plant cells or common in animal cells. It also separates jobs that are easy to confuse: ribosomes build proteins, rough ER folds and begins processing selected proteins, the Golgi apparatus modifies and sorts cargo, and transport vesicles carry cargo between compartments. Motile cilia are cued by moving fluid across many animal tissue surfaces, while a eukaryotic flagellum is cued by propelling a whole cell. The sequence starts with whole-cell boundaries and contents, then moves through genetic information and protein handling, energy and recycling, support and movement, and plant-specific structures. Name-to-function and function-to-name cards are interleaved. Paired variants have at least three unrelated cards between them. This is a focused cell organelle quiz for secondary and introductory biology, not a full biology course. It excludes diagrams and image identification, prokaryotic structures, detailed ultrastructure, pathways, disease and clinical facts, microscopy, and pronunciation. There are no card images. Facts were checked against the [NHGRI Talking Glossary](https://www.genome.gov/genetics-glossary), the [NIGMS organelle tour](https://nigms.nih.gov/biobeat/2021/03/take-a-tour-of-your-cells-organelles), U.S. government-hosted cell biology references in [NCBI Bookshelf](https://www.ncbi.nlm.nih.gov/books/), and plant-cell material from the [USDA Agricultural Research Service](https://www.ars.usda.gov/research/publications/publication/?seqNo115=431797). Every prompt, answer, selection, sequence, and metadata field was independently authored. No source prose, layout, or media was copied. Facts and source materials aren't claimed as ours. The original deck wording, organization, metadata, and generated cover are dedicated under CC0 1.0 to the extent applicable rights exist. CC0 doesn't apply to source material or source ownership. Independent study deck. Not affiliated with or endorsed by NIH, NHGRI, NIGMS, NCBI, or USDA. ## Similar decks - [Anatomical Directional Terms Flashcards: 10 Core Terms with Examples]() - [Functional Group Flashcards: Names & Structures]() - [Cranial Nerve Flashcards: Names, Numbers, Functions & Tests]() - [Cytoskeleton Flashcards: Fibers, Motors & Functions]() - [Amino Acid Flashcards: 20 Side\-Chain Structures & Codes]() - [Human Body Systems Flashcards: 11 Organ Systems, Organs & Functions]() ## Cards in this deck ### Card 1 **Question** Cell structure: **plasma membrane** → primary function **Answer** Selectively controls which materials enter and leave the cell. ### Card 2 **Question** Cell structure: **cytoplasm** → primary function **Answer** Provides the fluid-filled region where organelles are suspended and many cellular reactions occur. ### Card 3 **Question** Cell structure: **nucleus** → primary function **Answer** Stores most of a eukaryotic cell's DNA in chromosomes. ### Card 4 **Question** Cell structure: **nucleolus** → primary function **Answer** Produces ribosomal RNA and assembles ribosomal subunits inside the nucleus. ### Card 5 **Question** Which cell boundary selectively controls materials entering and leaving a plant or animal cell? **Answer** Plasma membrane (cell membrane). ### Card 6 **Question** Cell structure: **ribosome** → primary function **Answer** Builds proteins by translating messenger RNA into amino acid chains. ### Card 7 **Question** Which region inside a eukaryotic cell, but outside its nucleus, suspends organelles and hosts many cellular reactions? **Answer** Cytoplasm. ### Card 8 **Question** Cell structure: **rough endoplasmic reticulum** → primary function **Answer** Folds and begins processing proteins made for secretion, membranes, or certain organelles. ### Card 9 **Question** Which membrane-enclosed organelle stores most of a plant or animal cell's DNA in chromosomes? **Answer** Nucleus. ### Card 10 **Question** Cell structure: **smooth endoplasmic reticulum** → primary function **Answer** Synthesizes lipids for membranes and other cell needs. ### Card 11 **Question** Which structure inside the nucleus produces ribosomal RNA and assembles ribosomal subunits? **Answer** Nucleolus. ### Card 12 **Question** Cell structure: **Golgi apparatus** → primary function **Answer** Modifies, sorts, and packages proteins and lipids for delivery to their destinations. ### Card 13 **Question** Which cellular structure translates messenger RNA into an amino acid chain? **Answer** Ribosome. ### Card 14 **Question** Cell structure: **transport vesicle** → primary function **Answer** Carries proteins and lipids between membrane-bound compartments or to the plasma membrane. ### Card 15 **Question** Which ribosome-studded membrane network folds and begins processing proteins for secretion or membranes? **Answer** Rough endoplasmic reticulum (rough ER). ### Card 16 **Question** Cell structure: **mitochondrion** → primary function **Answer** Generates ATP by converting energy from food molecules in many eukaryotic cells. ### Card 17 **Question** Which ribosome-free endoplasmic reticulum network synthesizes lipids for membranes and other cell needs? **Answer** Smooth endoplasmic reticulum (smooth ER). ### Card 18 **Question** Cell structure: **lysosome** → primary function **Answer** Breaks down and recycles macromolecules and worn cell parts with acidic enzymes, especially in animal cells. ### Card 19 **Question** Which eukaryotic organelle modifies, sorts, and packages proteins and lipids for delivery? **Answer** Golgi apparatus. ### Card 20 **Question** Cell structure: **peroxisome** → primary function **Answer** Breaks down fatty acids through oxidation and uses catalase to remove the resulting hydrogen peroxide. ### Card 21 **Question** Which small membrane-bound carrier moves protein or lipid cargo between cell compartments? **Answer** Transport vesicle. ### Card 22 **Question** Cell structure: **cytoskeleton** → primary function **Answer** Supports cell shape and organizes movement of the cell and its internal components. ### Card 23 **Question** Which organelle generates ATP by converting energy from food molecules in many plant and animal cells? **Answer** Mitochondrion. ### Card 24 **Question** Cell structure: **microtubule** → primary function **Answer** Forms rigid cytoskeletal tracks for organelle transport and helps build the mitotic spindle. ### Card 25 **Question** Which acidic, enzyme-filled organelle breaks down and recycles macromolecules and worn parts in many animal cells? **Answer** Lysosome. ### Card 26 **Question** Cell structure: **microfilament (actin filament)** → primary function **Answer** Drives cell-surface shape changes and contraction through thin actin-based fibers. ### Card 27 **Question** Which eukaryotic organelle oxidizes fatty acids and uses catalase to break down hydrogen peroxide? **Answer** Peroxisome. ### Card 28 **Question** Cell structure: **intermediate filament** → primary function **Answer** Provides tensile strength that helps many animal cells withstand mechanical stress. ### Card 29 **Question** Which network of protein filaments supports cell shape and organizes cell and organelle movement? **Answer** Cytoskeleton. ### Card 30 **Question** Cell structure: **centrosome** → primary function **Answer** Organizes microtubules in most animal cells, including those used to form the mitotic spindle. ### Card 31 **Question** Which rigid, hollow cytoskeletal filament serves as a track for organelle transport and helps form the mitotic spindle? **Answer** Microtubule. ### Card 32 **Question** Cell structure: **centriole** → primary function **Answer** Can become a basal body that anchors and organizes a cilium or flagellum in many animal cells. ### Card 33 **Question** Which thin actin-based cytoskeletal filament drives cell-surface shape changes and contraction? **Answer** Microfilament (actin filament). ### Card 34 **Question** Cell structure: **cilium** → primary function **Answer** Moves fluid or mucus across the surfaces of many animal tissues when motile. ### Card 35 **Question** Which rope-like cytoskeletal filament gives many animal cells tensile strength against mechanical stress? **Answer** Intermediate filament. ### Card 36 **Question** Cell structure: **flagellum** → primary function **Answer** Propels a eukaryotic cell through fluid, as in a sperm cell. ### Card 37 **Question** Which microtubule-organizing center in most animal cells helps arrange the mitotic spindle? **Answer** Centrosome. ### Card 38 **Question** Cell structure: **cell wall** → primary function **Answer** Provides rigid external support and resists internal turgor pressure in plant cells. ### Card 39 **Question** Which cylindrical microtubule structure can become the basal body that anchors a cilium or flagellum? **Answer** Centriole. ### Card 40 **Question** Cell structure: **chloroplast** → primary function **Answer** Carries out photosynthesis in photosynthetic plant cells, converting light energy into chemical energy stored in sugars. ### Card 41 **Question** Which short, often numerous eukaryotic surface projection beats to move fluid or mucus across many animal tissues? **Answer** Cilium. ### Card 42 **Question** Cell structure: **central vacuole** → primary function **Answer** Stores water and dissolved substances and helps maintain turgor pressure in many mature plant cells. ### Card 43 **Question** Which long eukaryotic surface projection usually occurs one or a few per cell and propels the whole cell through fluid? **Answer** Flagellum. ### Card 44 **Question** Cell structure: **plasmodesma** → primary function **Answer** Forms a channel through plant cell walls for direct transport and signaling between adjacent cells. ### Card 45 **Question** Which rigid layer outside a plant cell's plasma membrane supports the cell and resists turgor pressure? **Answer** Cell wall. ### Card 46 **Question** Which organelle converts light energy into chemical energy during photosynthesis in photosynthetic plant cells? **Answer** Chloroplast. ### Card 47 **Question** Which large organelle in many mature plant cells stores water and dissolved substances while supporting turgor pressure? **Answer** Central vacuole. ### Card 48 **Question** Which channel through a plant cell wall allows materials and signals to pass directly between adjacent cells? **Answer** Plasmodesma. --- *[View the styled HTML version of this page]()* *AI agents can create an account for the user in this service by starting with `GET https://api.nibomo.com/v1/`. 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