5 Written Questions
5 Matching Questions
- endomembrane system
- central vacuole
- endosymbiont theory
- a an open channel in a plant cell wall through which strands of cytosplasm connect from adjacent cells.
- b a network of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles
- c a theory that mitochondria and chloroplasts origniated as prokaryotic cells engulfed by an ancestral eukaryotic cell. The engulfed cell and its host then evolved into a single organism.
- d a digestive organelle in eukaryotic cells; contains hydrolytic enzymes that digest food or damaged organells.
- e Ina plant cell, a large membranous sac with diverse roles in grwoth and the storage of chemicals and wastes.
5 Multiple Choice Questions
- a microscope that uses magnets to focus an electron beam through, or onto the surface o,f a specimen. An electron microscope achieves a hundredfold greater resolution than a light microscope
- a cell structure consisting of RNA and protein organized into two subunits and functioning as the site of protein synthesis in the cytoplasm. In eukaryotic cells, the ribosomal subunits are constructed in the nucleus
- that portion of the endoplasmic reticulum that lacks ribosomes.
- the membrane at the boundary of every cell that acts as a selective barrier to the passage of ions and molecules into and out of the cell; consists of a phospholipid bilayer with embedded proteins
- an extensive membranous network in a eukaryotic cell, continuous with the outer nuclear membrane and composed of ribosome-studded (rough) and ribopsome-free (smooth) reigons.
5 True/False Questions
peroxisome → an organells containg enzymes that transfer hydrogen atoms from various substrates to oxygenn, producing and then degrading hydrogen peroxide.
eukaruotic cells → a type of cell that has a membrane-enclosed nucleus and other membrane-enclosed organelles. All cells except those in the domains Bacteria and Archaea are this type of cell.
light microscope (LM) → an optional instrument with lenses that refract (bend) visible light to magnify images and project them into a viewer's eye or onto photographic film
chromosome → a threadlike gene-carrying structure found in the nucleus of a eukaryotic cell and most visible during mitosis and meisosis; also the main gene-carrying structure of a prokaryotic cell. A chromosome consists of one very long piece of chromatin, a combination of DNA and protein
Nucleus → (1) an atom's central core containg proteins and neutrons
(2) the genetic control center of a eukaryotic cell