1) The DNA of bacterial structures is not found in a nucleus. a) True b) False 2) Many bacterial structures have one or more plasmids. a) True b) False 3) Bacteria is found in the air, soil, and a) sun. b) water. c) plants. 4) Ribosomes produce a) energy. b) organelles. c) protein. 5) Bacteria have a cell membrane, and many also have a a) cell wall. b) nuclei. c) archaea. 6) Some bacteria have a capsule. a) True b) False 7) Bacteria can be spherical, rod shaped, and a) circular. b) square. c) spiral shaped. 8) Archaea do not have organelles or a a) nucleus. b) ribosomes. c) cell wall. 9) Bacteria lack a) DNA. b) nuclei and membrane.bound organelles. c) ribosomes. 10) Archaea cells walls lack ________ when compared to other bacteria. a) tums. b) pepto bismol. c) peptidoglycan. 11) Archaea DNA is more like a ____ cell. a) eukaryotic. b) sweet. c) blue. 12) Bacteria formed are identical to each other and the _____ cell. a) shorter b) original c) inner 13) Bacteria can reproduce in as little as ____ minutes. a) 20 b) 2 c) 200 14) Bacteria can help keep other, less friendly, bacteria from starting to grow in your body. Others contribute to your health. a) True b) False 15) ___ can fix nitrogen, enabling plants to use it. a) Bacteria b) Plasmids c) Archaea 16) Bacteria in ruminants help animals to digest cellulose. a) True b) False 17) Decomposers recycle matter from waste materials and the remains of plants and animals back into the soil. a) True b) False 18) Bacteria are essential to making many foods. a) True b) False 19) All bacteria are beneficial. a) True b) False 20) Bacteria were created good, but the Curse included bacteria becoming the cause of certain diseases. a) True b) False 21) Which lists the steps of binary fusion in order? a) one bacterium, DNA replicates, cell membrane pinches in two, two bacteria b) two bacteria, DNA replicates, one bacterium c) cell membrane pinches in two, DNA replicates, one bacterium 22) Bacteria reproduce by ___ a) plasmids. b) binary fission. c) nuclei. 23) A bacterium’s DNA and ribosomes enclosed in a tough case that can survive unfavorable conditions. a) Seashore b) Blackheads c) Endospore 24) Some bacteria have become resistant to one or more types of antibiotics and are called ___. a) superbugs b) smartbugs c) spiderbugs 25) A nucleic acid surrounded by a protein cost that uses other cells to reproduce is a ___. a) cold b) virus c) sneeze 26) Bacteria can share their plasmids through ___. a) a virus b) antibiotics c) conjugation 27) The protein coat that surrounds the nucleic acid of a virus is a ___. a) superbug b) virus c) capsid 28) Viruses don’t have ____. a) cytosol b) cytosol or a cell membrane c) cytosol, organelles, or a cell membrane 29) Viruses can not reproduce on their own. a) True b) False 30) Viruses are not cells. a) True b) False 31) Most viruses can not be seen under a light microscope. a) True b) False 32) The viral nucleic acid uses the cell’s own cellular machinery to make more viruses. a) True b) False 33) In viral reproduction, the virus attaches to the ___. a) major cell b) host cell c) acid 34) The virus then destroys the cell by bursting it open and escaping to infect new cells, known as active viruses. a) True b) False 35) Good hygiene, a balanced diet, and exercise can help you beat germs. a) True b) False 36) Viruses can remain ___ for a period of months or years. a) active b) latent 37) Each time the host cell goes through mitosis, the viral DNA is ___ and passed to the daughter cells. a) destroyed b) changed c) replicated 38) A bacterium would form an ___ when the conditions make it difficult for a bacterium to survive. a) archaea b) endospore c) eukaryotic cell 39) Scientists discovered something small that has DNA and ribosomes. It could be a ___. a) small bacterium b) virus c) cold 40) Archaea are similar to ___ cells. a) prokaryotic b) eukaryotic 41) Bacteria is similar to ___ cells. a) prokaryotic b) eukaryotic 42) Viruses have ___ which surrounds the nucleic acid. a) genes b) capsids c) mutation

Chapter 6

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