AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

Honors Biology - Cells - 9th Grade Flashcards

Terms : Hide Images
1808243950Cell WallRigid layer that gives protection, support, and shape to the cell (found only in plant cells)0
1808243951Central VacuoleFilled with watery fluids that strengthen the cell and help support the entire plant (found only in plant cells)1
1808243952ChloroplastOrganelles that carry out photosynthesis (found only in plant cells)2
1808243953CentrioleCylinder-shaped organelles made of short microtubules arranged in a circle (found only in animal cells)3
1808243954Cell Membrane (Plasma Membrane)Forms a boundary between a cell and the outside environment4
1808243955CytoplasmJellylike substance that contains dissolved molecular building blocks5
1808243956VesicleSmall membrane-bound sacs that divide some materials from the rest of the cytoplasm and transport these materials from place to place within the cell6
1808243957Golgi ApparatusConsists of closely layered stacks membrane-enclose spaces that process, sort, and deliver proteins7
1808243958RibosomesTiny organelles that link amino acids together to form proteins8
1808243959Endoplasmic Reticulum (ER)Interconnected network of thick folded membranes9
1808243960NucleusStorehouse for most of the genetic information, or DNA10
1808243961NucleolusInside the nucleus and is a dense region where tiny organelles that are essential for making proteins are assembled11
1808243962MitochondriaSupplies energy to the cell12
1808243963LysosomeMembrane-bound organelles that contain enzymes13
1808243964CentrosomeSmall region of cytoplasm that produces microtubules14
1808243965VacuoleFluid-filled safe used for storage of material needed by the cell15
1808243966CytoskeletonNetwork of proteins that is constantly changing to meet the needs of the cell16
1808297392OsmosisDiffusion of water across a semipermeable membrane from an area of high concentration to low concentration17
1808297393Cell Theory-All organisms are made of cells -Basic unit of life -All cells are of cells18
1808297394OrganelleStructure specialized to perform a distinct process within a cell19
1808297395PhospholipidComposed of: -Charged phosphate group -Glycerol -Two fatty acid chains20
1808297396Fluid Mosaic ModelDescribes arrangement of molecules that make up the cell membrane21
1808297397ReceptorA protein that detects a signal molecule and performs an action in response22
1808297398Passive TransportMovement of molecules across a cell membrane without energy input from the cell23
1808297399DiffusionMovements of molecules in a fluid or gas from a region of higher concentration to a region of lower concentration24
1808297400Concentration GradientDifference in the concentration of a substance from one location to another25
1808297401IsotonicSame concentration of dissolved particles as the cell26
1808297402HypertonicHigher concentration of dissolved particles than a cell27
1808297403HypotonicLower concentration of dissolved particles than a cell28
1808297404Facilitated diffusionDiffusion of molecules across a membrane through passive transport29
1808297405Active TransportDrives molecules across a membrane from a region of lower concentration to a region of higher concentration30
1808297406EndocytosisProcess of taking liquid or fairly large molecules into a cell by engulfing them in a membrane31
1808297407PhagocytosisType of endocytosis in which the cell membrane engulf large particles32
1808297408ExocytosisRelease of substances out of a cell by the fusion of a vesicle withe the membrane33

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!