5 Written questions
5 Matching questions
- eukaryotic cell
- electron microscope (EM)
- intermediate filament
- a An organelle containing enzymes that transfer hydrogen from various substrates to oxygen, producing and then degrading hydrogen peroxide.
- b An instrument that focuses an electron beam through, or onto the surface of, a specimen. An electron microscope achieves a hundredfold greater resolution than a light microscope.
- c A type of cell that has a membrane-enclosed nucleus and other membrane-enclosed organelles. All organisms except bacteria and archaea are composed of eukaryotic cells.
- d A digestive organelle in eukaryotic cells; contains hydrolytic enzymes that digest the cell's food and wastes.
- e An intermediate-sized protein fiber that is one of the three main kinds of fibers making up the cytoskeleton of eukaryotic cells. Intermediate filaments are ropelike, made of fibrous proteins.
5 Multiple choice questions
- An organelle in eukaryotic cells where cellular respiration occurs. Enclosed by two concentric membranes, it is where most of the cell's ATP is made.
- A membrane-enclosed sac that is part of the endomembrane system of a eukaryotic cell, having diverse functions.
- A structure in an animal cell composed of cylinders of microtubule triplets arranged in a 9 and 0 pattern. An animal usually has a centrosome with a pair of centrioles involved in cell division.
- One of a number of disk-shaped membranous sacs inside a chloroplast. Thylakoid membranes contain chlorophyll and the enzymes of the light reactions of photosynthesis. A stack of thylakoids is called a granum.
- A macromolecule consisting of one or more polypeptides linked to short chains of sugars.
5 True/False questions
endomembrane system → A network of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles.
cell wall → The theory that all living things are composed of cells and that all cells come from other cells.
endoplasmic reticulum (ER) → An extensive membranous network in a eukaryotic cell, continuous with the outer nuclear membrane and composed of ribosome-studded (rough) and ribosome-free (smooth) regions.
endosymbiosis → An open channel in a plant cell wall through which strands of cytoplasm connect from adjacent cells.
nucleoid → A dense region of DNA in a prokaryotic cell.