Viruses and Monerans

Biology I

Unit 7

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One-celled Monerans that contain chlorophyll

Blue-green algae

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A word that means against life

Antibiotic

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Means inside

Endo

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The sticky, outer layer of some bacteria

capsule

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A disease that can be passed from one organism to another

Communicable

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Bacteria reproduce by ________.

Fission

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Substances made from weakened or dead viruses

vaccines

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The process of one organism dividing into two organisms

fission

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Organisms that use dead material for food

saprophytes

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Name the two functions of the capsule of bacteria

A) Keeps the cell from drying out

B) Helps cell stick to food and other cells.

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What are the common shapes of bacteria?

Round

Spiral

Rod

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Heating milk to kill bacteria

Pasteurization

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The common cold is caused by ______.

Viruses

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Consist of a protein coat around a chromosome like part

Viruses

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Bacterial cells do not contain a _____.

Nucleus

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A set of steps that proves whether or not a disease is caused by a specific organism

Koch’s postulates

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When growing conditions are not right many bacteria form________.

Endospores

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Give Four ways the AIDS virus is spread

A) Sexual intercourseB) Blood productsC) Sharing contaminated needlesD) Pregnant women to their

developing babies

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A long whip like thread used for movement

flagellum

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Name Ways bacteria is helpful.A) In the stomach of cows they break down hay

and grassB) They decompose dead matter- recycles

chemicals.C) Bacteria gives flavor to coffee and tea.D) Breaks down fibers in plants to make rope.

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Developing new forms of bacteria that produce useful products is an example of _________.

Biotechnology

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A group of similar cells growing next to each other but NOT dependent on each other

COLONY

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The trait that viruses share with living things is the ability to ________.

Reproduce

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A chemical that interferes with the way viruses reproduce

Interferon

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Chemicals made by the body that help destroy viruses and harmful bacteria

Antibodies

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Reproduction from only one parent

Asexual

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Chemicals that kill bacteria on living things are______.

Antiseptics

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Bacteria that DO NOT need oxygen to survive

Anaerobic

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Organism that provides food for a parasite

Host

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List two ways that viruses differ from living things

A) Viruses are not made of cellsB) Viruses do not grow or respond

to changes in the environment.