5 Written Questions
5 Matching Questions
- rough ER
- transmission electron microscope
- a A dense region of DNA in a prokaryotic cell.
- b An infolding of the inner membrane of a mitochondrion in which is embedded the electron transport chain and the enzyme catalyzing the synthesis of ATP.
- c A process by which the mitochondria and chloroplasts of eukaryotic cells probably evolved from symbiotic associations between small prokaryotic cells living inside larger cells.
- d A network of interconnected membranous sacs in a eukaryotic cell's cytoplasm. Rough ER membranes are studded with ribosomes that make membrane proteins and secretory proteins.
- e A microscope that uses an electron beam to study the internal structure of thinly sectioned specimens.
5 Multiple Choice Questions
- 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 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.
- A threadlike, gene-carrying structure found in the nucleus of a eukaryotic cell and most visible during mitosis and meiosis; also, the main gene-carrying structure of a prokaryotic cell. Chromosomes consist of chromatin, a combination of DNA and protein.
- The thinnest of the three main kinds of protein fibers making up the cytoskeleton of a eukaryotic cell; a solid, helical rod composed of the globular protein actin.
- The chemical activities of cells.
5 True/False Questions
nuclear envelope → A double membrane, perforated with pores, which encloses the nucleus and separates it from the rest of the eukaryotic cell.
cell wall → The theory that all living things are composed of cells and that all cells come from other cells.
microtubule → A photograph taken through a microscope.
chromatin → A threadlike, gene-carrying structure found in the nucleus of a eukaryotic cell and most visible during mitosis and meiosis; also, the main gene-carrying structure of a prokaryotic cell. Chromosomes consist of chromatin, a combination of DNA and protein.
Reverse Transcriptase → A network of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles.