5 Written questions
5 Matching questions
- eukaryotic cell
- scanning electron microscope (SEM)
- cell wall
- nuclear envelope
- endomembrane system
- a A double membrane, perforated with pores, which encloses the nucleus and separates it from the rest of the eukaryotic cell.
- b A microscope that uses an electron beam to study the surface architecture of a cell or other specimen.
- c A protective layer external to the plasma membrane in plant cells, bacteria, fungi, and some protists; protects the cell and helps maintain its shape.
- d A network of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles.
- e 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.
5 Multiple choice questions
- The theory that all living things are composed of cells and that all cells come from other cells.
- A digestive organelle in eukaryotic cells; contains hydrolytic enzymes that digest the cell's food and wastes.
- The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water; Sugars are made in the stroma by the enzymes of the Calvin cycle.
- An organelle containing enzymes that transfer hydrogen from various substrates to oxygen, producing and then degrading hydrogen peroxide.
- A substance in which the cells of an animal tissue are embedded; consists of protein and polysaccharides.
5 True/False questions
Vacuole → A dense region of DNA in a prokaryotic cell.
plasmodesma → An open channel in a plant cell wall through which strands of cytoplasm connect from adjacent cells.
light microscope (LM) → An optical instrument with lenses that refract (bend) visible light to magnify images and project them into a viewer's eye or onto photographic film.
cytoplasm → An organelle found in plants and photosynthetic protists that absorbs sunlight and uses it to drive the synthesis of organic molecules (sugars) from carbon dioxide and water.
flagellum → A long cellular appendage specialized for locomotion. The flagella of prokaryotes and eukaryotes differ in both structure and function. Like cilia, eukaryotic flagella have a 9 + 2 arrangement of microtubules covered by the cell's plasma membrane.