Microorganisms Unit Test: Question Preview (ID: 23410)


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Which structure of a diatom is rich in silicon?
a) Cell Wall b) Cell Membrane c) Cytoplasm d) Flagella
Why can the use of antibiotics to fight minor illness become a serious problem?
a) Bacteria adapt and become immune to the antibiotics. b) Viruses can use the antibiotics to increase their replication. c) Bacteria can use the antibiotics against the host. d) Viruses adapt and change to make antibiotics ineffective.
A patient's blood is tested, and the substance found in the blood is living, microscopic, and responsible for the patient's tuberculosis. Which substance is making the patient ill?
a) Bacteria b) Virus c) Mold d) Algae
Which statement supports the theory that chloroplasts evolved from cyanobacteria?
a) Chloroplasts have DNA. b) Chloroplasts are created by cells. c) Chloroplasts lack an outer membrane. d) Chloroplasts synthesize their own proteins.
Animal digestive systems do not function appropriately without the aid of other organisms. In which kingdom do these organisms belong?
a) Bacteria b) Fungi c) Protistans d) Plantae
Three and a half billion years ago, Earth was much hotter than it is now, and there was little to no oxygen in the atmosphere. Based on these atmospheric conditions, which species originated 3.5 billion years ago?
a) Unicellular Bacteria b) Unicellular Algae c) Unicellular Plants d) Unicellular Animal-Like Protists
A dinoflagellate contains two flagella that work together and enable the dinoflagellate to perform which function?
a) Crawl through mud b) Spin through water c) Store Carbohydrates d) Initiate Photosynthesis
Yellow-green algae and golden-brown algae belong to the phylum Chrysophyta, which means golden plants. Which structure provides the plants with the bright yellow pigments that give this phylum its name?
a) Chloroplast b) Gullet c) Pellicle d) Nucleus
How do immunizations help fight the polio epidemic?
a) They provide the body with a deadly antigen that allows the body to produce high concentrations of T-killer cells. b) They provide the body with a safe antigen that allows the body to then prepare antibodies if it is ever exposed to the real v c) They provide the body with a compliment protein that enables the body to recognize and destroy all viruses. d) They provide the body with a boost of white blood cells that the body can increase in number during an infection.
Edward Jenner created the first vaccine in 1796. Which statement explains what Jenner was trying to accomplish?
a) He wanted to relieve the public from the small pox epidemic. b) He wanted to develop an end to all bacterial infections. c) He wanted to ensure that dairy products were pasteurized. d) He wanted to provide the public with a healthier form of meat.
Which sentence BEST explains a virus's means of replication?
a) The virus attaches to a living host cell and begins to control the cell, thereby replicating more specimens. b) The virus attaches to a nonliving host cell and begins to use the cellular material to replicate. c) The virus attaches to a nonliving host cell and begins to self-reproduce until a living cell is available. d) The virus attaches to a living host cell and begins to reproduce with the cell, thereby producing hybrid cells.
A group of biology students wanted to know more about the growth of algae in local ponds. They studied algae living in a sunny pond and algae living in a shady pond. How will the rate of cell division MOST LIKELY differ between the algae?
a) The algae in the sunny pond will have a faster rate of cell division because they receive more sunlight. b) The algae in the shady pond will have a slower rate of cell division because cold water inhibits their growth. c) The algae in the shady pond will have a faster rate of cell division because they are protected from direct sunlight. d) The algae in the sunny pond will have a slower rate of cell division because the higher water temperature causes mutations.
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