Week 11 Practice Quiz (10%) Flashcards
Which of the following statements is not correct?
A. Eukaryotes are more complex than prokaryotes
B. eukaryotes differ from prokaryotes in having a distinct nucleus and nuclear membrane (envelope)
C. Eukaryotes are usually larger than prokaryotes
D. Eukaryotes are usually smaller than viruses
E. all of the above alternatives are correct
D. Eukaryotes are usually smaller than viruses
Which of the following micro organisms is not a eukaryotes. A. A Protozoa B. a bacterium C. A fungus D. An amoeba E. a yeast
B. bacterium
Which of the following best describes what happens when a bacterial cell is placed in a solution containing 5% NaCl?
A. Water will move out of the cell
B. water will move into the cell
C. Sucrose will move into the cell from a higher to a lower concentration
D. The cell will undergo osmotic lysis
E. no change will result, the solution is isotonic
A. Water will move out of the cell
Which of the following statements is untrue? A. All fungi are multicellular B. all viruses are parasites C. All bacteria lack nuclear membranes D. All fungi have nuclear membranes E. all Protozoa are unicellular
A. All fungi are multicellular
Which of the following does not have a plasmalemma (cell membrane)? A. Bacteria B. viruses C. Fungi D. Protozoa E. yeast
B. viruses
MRSA’s were originally known as methicillin-resistant staphylococci aureus and are now known as multi-resistant staphylococci aureus. Which of the following statements is not true concerning MRSA’s?
A. They readily colonise the nose and the skin
B. they occur naturally and have not arisen through the overuse of antibiotics
C. They are resistant to all penicillin and methicillin products
D. They attack older people in hospitals and nursing homes and those with low immunity
E. mRSA’s are not the same organism as VRE’s
B. they occur naturally and have not arisen through the overuse of antibiotics
A "cocci" bacteria is shaped like: A. A rod B. a spiral C. A sphere D. Mickey Mouse E. none of the above
C. A sphere
Gram stain is performed on the \_\_\_\_\_ of the cells A. Cell membrane B. genome C. Cell wall D. Ribosomes E. lysosomes
C. Cell wall
Gram negative bacteria are coloured \_\_\_\_\_ in a gram stain test: A. White B. green C. Red D. Blue E. yellow
C. Red
What consists of a nuclei acid genome packaged into a protein coat (capsid) or a membrane A. Virus B. vision C. Bacteriophage D. Capsomere E. pentamer
A. Virus
In a healthy human, resident micro organisms would be found in all of the following areas except: A. Lower urethra B. conjunctiva C. Bloodstream D. Tooth and gum surface E. nasal passages
C. Blood stream
When the plaque devastated the population of Europe in the Middle Ages, why did people catch the disease even if they didn’t come into contact with infected people or dead bodies?
A. The infectious organism washed out of bodies into the public water system
B. the infectious organisim produced endospores that persisted in houses and public places
C. The infectious organism persisted on nearly any surface in a state of non-growth activity and was readily picked up by the unsuspecting people
D. The infectious organism was transmitted from bodies to rats, then to fleas, and from fleas to people
E. both A and B
D. The infectious organism was transmitted from bodies to rats, then to fleas, and from fleas to people
Which of the following is smallest in physical size? A. Yeasts B. viruses C. Bacteria D. Fungi E. parasites
B. viruses
Which of the following can contain genes that can make an organism antibiotic resistant? A. Pili B. capsule C. Flagella D. Plasmid E. outer membrane
D. Plasmid
Which of the following depends on the biochemical machinery of the host cell for replication, and reproduction occurs by assembly of the individual components rather than by binary fission? A. Bacteria B. fungi C. Viruses D. Parasites E. yeasts
C. Viruses
