5 Written Questions

1. movement of substances through a cell membrane with the aid of carrier proteins, or protein channels
2. having a relatively higher concentration, "above strength"
3. group of organs that work together to perform a specific function
4. part of the cytoskeleton; threadlike structures of the protein actin that form networks in cells and produce a tough, flexible framework that supports the cell and helps it move
5. threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next

5 Matching Questions

1. chromatin
2. nucleus
3. lipid bilayer
4. osmosis
5. endocytosis

1. a diffusion of water through a selectively permeable membrane
2. b large membrane-enclosed structure that contains the cell's genetic material (DNA) and controls many of the cell's activities
3. c composes nearly all cell membranes, composed of two layers of phospholipids
4. d granular material within the nucleus; consists of DNA bound to proteins; when a cell divides, it condenses to form chromosomes
5. e process by which a cell takes material into the cell by infoldings, or pockets, of the cell membrane that then form vacuoles within the cytoplasm

5 Multiple Choice Questions

1. Dutch scientist who observed pond water through a single-lens microscope and saw tiny organisms he called animalcules.
   1. cell theory
   2. Leeuwenhoek
   3. eukaryote
   4. rough ER
2. Concluded that all animals are made of cells
   1. organ
   2. Schleiden
   3. Schwann
   4. chromatin
3. Concluded that new cells come from the division of existing cells
   1. organ
   2. Virchow
   3. vacuole
   4. tissue
4. organelle in an animal cell that helps to organize cell division and is formed from tubulin, located near the nucleus
   1. centriole
   2. eukaryote
   3. vacuole
   4. cell wall
5. The region of the cell between the cell membrane and the nucleus
   1. cytoskeleton
   2. cytoplasm
   3. lysosome
   4. chloroplast

5 True/False Questions

1. scanning electron microscope → microscope that forms an image of a specimen using a beam of electrons

   True        False

2. hypotonic → having a relatively higher concentration, "above strength"

   True        False

3. Transmission electron microscope → A microscope that uses an electron beam to study the internal structure of ultra-thin specimens, producing a two-dimensional image

   True        False

4. vacuole → Concluded that new cells come from the division of existing cells

   True        False

5. concentration → granular material within the nucleus; consists of DNA bound to proteins; when a cell divides, it condenses to form chromosomes

   True        False