specific for ocr gateway additonal science B.
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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| what does detritus mean? | show 🗑
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| show | animals which depend on detritus for their food
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| examples of detritivores? | show 🗑
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| show | speed up decay as they break the detritus down into smaller pieces, which increases the surface area
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| show | they recycle chemicals from dead plants and animals
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| what is another method of using decay? | show 🗑
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| show | -warmth
-moisture
-good aeration (to allow oxygen in)
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| show | microorganisms respire, which give off heat and warms up the compost, which speeds up decay
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| show | enzyme action - conditions that speed up enzyme action also speed up decay
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| what is the optimum temperature for bacteria? | show 🗑
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| show | 25
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| show | aerobic and anaerobic
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| show | because they produce oxygen, which speeds up decay
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| why do anaerobic bacteria break down dead detritus slowly? | show 🗑
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| what is a saprophyte? | show 🗑
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| show | released on to the food and break it down into simple soluble substances so the digested food is absorbed easily
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| show | canning, cooking, vinegar, drying, freezing, adding sugar or salt
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| how does cooking work? | show 🗑
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| show | killheats food before being canned to kill the bacteria. then sealed in a can to stop any bacteria getting ins bacteriA
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| show | it's an acid. very few bacteria can grow in acid conditions.
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| examples of food preserved in vinegar? | show 🗑
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| show | bacteria and fungi can't grow without water
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| show | cereals
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| show | kills bacteria or slows their growth
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| show | kills some bacteria and fungi and stops the growth of others
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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:
jirwin
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