Ch.7 #25-40
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Bacteria that cause disease are called bacterial. | pathogens
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| __________, or poisons, are made by some bacterial pathogens. | toxins
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| Some pathogens form thick walled structures called _____________ when environmental conditions are unfavorable: thus, they can survive for very long time periods. | endospores
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| ______________ can prevent some bacterial infections. | vaccines
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| Vaccines are made from damaged or ____________ bacterial cells | dead
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| Once injected, vaccines enable __________ blood cells on the body to recognize a particular type of bacteria and attack it if it appears at a later time. | white
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| Describe the process of pasteurization. | pasteurization is the process where the food is heated to a temperature that can kill most of the bacteria without much effect on the taste of the food
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| Describe how saprophytes help other organisms in the environment. | saprophytes break down dead organisms and neturn nutrients back to the environment for other organisms to use
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| A. What kind of bacteria annually save farmers millions of dollars in fertilizer costs? B. What kind of plants have these bacteria in their roots? | A. nitrogen-fixing bacteria save farmers millions dollars
B. peanuts and beans & pea plants have these bacteria in their roots
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
jaret36
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