Cell Diagrams
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47 Terms
What is this?
ENDOPLASMIC RETICULUM (ER): network of membranous sacs and tubes; active in membrane synthesis and other synthetic and metabolic processes; has rough (ribosome-studded) and smooth regions
Rough ER
Smooth ER
What is this?
Flagellum: motility structure present in some animal cells,
composed of a cluster of microtubules within an extension of the plasma
membrane
What is this?
Centrosome: region where the cell's microtubules are initiated; contains a pair of centrioles
What is this?
CYTOSKELETON:
reinforces cell's shape; functions in cell movement; components are made of protein. Includes:
Microfilaments
Intermediate filaments
Microtubules
What is this?
Microvilli: projections that increase the cell's surface area
What is this?
Peroxisome: organelle with various specialized metabolic functions; produces hydrogen peroxide as a by-product and then converts it to water
What is this?
Mitochondrion: organelle where cellular respiration occurs and most ATP is generated
What is this?
Lysosome: digestive organelle where macromolecules are hydrolyzed
What is this?
Golgi apparatus: organelle active in synthesis, modification, sorting, and secretion of cell products
What is this?
Ribosomes (small brown dots): complexes that make proteins; tree ir cytosol or bound to rough ER or nuclear envelope
What is this?
Plasma membrane:
membrane
enclosing the cell
What is this?
Nucleus
What is this?
Chromatin: material consisting of DNA and proteins; visible in a dividing cell as individual condensed chromosomes
What is this?
Nucleolus: nonmembranous structure involved in production of ribosomes; a nucleus has one or more nucleoli
What is this?
Nuclear envelope: double membrane enclosing the nucleus; perforated by pores; continuous with ER
What is this?
NUCLEUS
Nuclear envelope
Nucleolus
Chromatin
What is this?
Golgi apparatus
What is this?
Mitochondrion
What is this?
Peroxisome
What is this?
Plasma membrane
What is this?
Plasma membrane
What is this?
Cell wall: outer layer that maintains cell's shape and protects cell from mechanical damage; made of cellulose, other polysaccharides, and protein
What is this?
Wall of adjacent cell
What is this?
Plasmodesmata: cytoplasmic channels through cell walls that connect the cytoplasms of adjacent cells
What is this?
Chloroplast: photosynthetic organelle; converts energy of sunlight to chemical energy stored in sugar molecules
What is this?
Microfilaments
Microtubules
CYTOSKELETON
What is this?
Central vacuole: prominent organelle in older plant cells; functions include storage, breakdown of waste products, and hydrolysis of macromolecules; enlargement of the vacuole is a major mechanism of plant growth
What is this?
Ribosomes
What is this?
Smooth ER
What is this?
Rough ER
What is this?
Nuclear envelope
Outer membrane
- Inner membrane
What is this?
Nucleus
What is this?
Rough ER
What is this?
Chromatin. This segment of a chromosome from a nondividing cell shows two states of coiling of the DNA (blue) and protein (purple) complex.
The thicker form is sometimes also organized into long loops.
What is this?
Nuclear lamina (TEM).
The netlike lamina lines the inner surface of the nuclear envelope.
What is this?
Close-up of nuclear envelope
What is this?
Pore complex
What is this?
Ribosomes
What is this?
Pore complexes (TEM). Each pore is ringed by protein particles.
What is this?
Surface of nuclear envelope
(TEM). This specimen
was prepared by a technique known as freeze-fracture.
What is this?
Nuclear pore
What is this?
Outer membrane
What is this?
Inner Membrane
What is this?
Nuclear envelope
What is this?
Chromatin
What is this?
Nucleolus
What is this?
Nucleus