5 Written questions
5 Matching questions
- mitochondrial matrix
- electron microscope (EM)
- a A sac made of membrane in the cytoplasm of a eukaryotic cell.
- b A dense region of DNA in a prokaryotic cell.
- c The fluid contained within the inner membrane of a mitochondrion.
- d 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.
- e A photograph taken through a microscope.
5 Multiple choice questions
- A macromolecule consisting of one or more polypeptides linked to short chains of sugars.
- A structure within the nucleus of a eukaryotic cell where ribosomal RNA is made and assembled with proteins imported from the cytoplasm to make ribosomal subunits.
- A stack of hollow disks formed of thylakoid membrane in a chloroplast. Grana are the sites where light energy is trapped by chlorophyll and converted to chemical energy during the light reactions of photosynthesis.
- Everything inside a cell between the plasma membrane and the nucleus; consists of a semifluid medium and organelles.
- A cell structure consisting of RNA and protein organized into two subunits and functioning as the site of protein synthesis in the cytoplasm. The ribosomal subunits are constructed in the nucleolus.
5 True/False questions
central vacuole → A membrane-enclosed sac occupying most of the interior of a mature plant cell, having diverse roles in reproduction, growth, and development.
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.
rough ER → 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.
cellular metabolism → A protective layer external to the plasma membrane in plant cells, bacteria, fungi, and some protists; protects the cell and helps maintain its shape.
nuclear envelope → A double membrane, perforated with pores, which encloses the nucleus and separates it from the rest of the eukaryotic cell.