BIOS 225 TEST 1 - –Answer Bacteria 2. –Answer Single celled o...

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BIOS 225 TEST 1

• Lack membrane-enclosed intracellular structures found in most other cells.-

–Answer Bacteria 2.–Answer Single celled organism Have a cell nucleus.–Answer algae

• Algae produce of oxygen in the atmosphere.

–Answer 70 percent

• Algae is the link in the food chain.

–Answer first

• Many are single celled. Have cell

nucleus.Generally do not move but can form networks of branching filaments. Decomposers of dead organisms.–Answer fungi

• Are A-cellular

Too small to be seen with light microscope.–Answer Viruses

• Viruses are composed of specific chemical substances

–Answer

–Answer

• nucleic acid 2. a few proteins 1 / 3

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• Viruses can and display other properties of living organisms only when they

have cells.–Answer replicate, invaded

• Smaller A-cellular agents of diseases are and .

–Answer viroids, pri- ons 10.–Answer Nucleic acid without a protein coating (various plant disease.) –Answer - viroids 11.–Answer Protein without any mucleic acid (mad cow disease).–Answer prions 12.–Answer single celled. At least one nucleus.A few species are large enough to be seen with naked eye.–Answer protozoa

• Protozoa can be found in a variety of water and soil environments and also some animals

such as - .–Answer malaria-carrying mosquitoes 14.–Answer worms 2 / 3

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Have microscopic stages in their life cycles that can cause disease.–Answer Helminths 15.–Answer insect and similar organisms Can transmit these stages as well as other disease causing microbes.–Answer arthro- pods 16.–Answer the study of microbes.Organisms are classified by structure and function.–Answer microbiology

• Taxonomy

–Answer Classification of microorganisms by structure or function

• Bacteriology

–Answer Study of bacteria

• Phycology

–Answer Study of algae

• Mycology

–Answer Study of fungi

• Protozoology

–Answer

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