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- 1. Multiple Choice
To carry out a biochemical test, sometimes we need special solution called....
mixture
substance
reagent
liquid
- 2. Multiple Choice
Which of the following tests for starch?
Iodine
Benedict's
Biuret
Emulsion
- 3. Multiple Choice
Which of the following tests for protein?
Iodine
Benedicts
Biuret
Emulsion
- 4. Multiple Choice
Which of the following tests for glucose?
Iodine
Benedicts
Biuret
Emulsion
- 5. Multiple ChoiceWhen large amounts of glucose is present Benedicts turns...purpleblue-blackbrick-redgreen
- 6. Multiple Choice
When starch is present iodine turns...
purple
blue-black
orange
brick red
- 7. Multiple Choice
When protein is present Biuret turns...
purple
blue-black
orange
brick red
- 8. Multiple Choice
A negative test for glucose will cause Benedicts to stay...
brick red
blue
black
orange
- 9. Multiple Choice
A negative test for protein will cause Biuret to stay...
brick red
blue
black
orange
- 10. Multiple Choice
What is a positive result for the lipid emulsion test?
milky white colour
clear
yellow
green
- 11. Multiple Choice
In this experiment, you must put your test tubes into a hot water bath
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
- 12. Multiple Choice
The test tubes in the photo represent a negative and positive result for
Benedict's with glucose
Biuret with protein
Iodine with starch
Ethanol with fat
- 13. Multiple ChoiceWhich biomolecule turns iodine solution black?complex carbohydrate (polysaccharide)proteinsimple carbohydrate (monosaccharide)lipid
- 14. Multiple ChoiceWhich biomolecule does Benedict's solution test for?simple carbohydrate (monosaccharides)complex carbohydrates (polysaccharides)proteinslipids
- 15. Multiple ChoiceWhich biomolecule is this lab testing for?simple carbohydrate (monosaccharide)complex carbohydrate (polysaccharide)proteinlipid
- 16. Multiple ChoiceTara conducted several tests on a mystery solution. Her results were as follows:
*Biuret's = purplish/violet; *Benedict's = orange; *Sudan III = yellow; *Iodine = black.
Which biomolecules were present in the mystery solution?protein & carbohydrateprotein & lipidcarbohydrate & lipidprotein, carbohydrate, & lipid - 17. Multiple Choice
Which reagent do I use for starch
Iodine
Bendicts
Ethanol
Biuret
- 18. Multiple Choice
What colour will the iodine turn for a positive result for starch
Brick Red
Lilac
Colourless
Blue-Black
- 19. Multiple Choice
What does a positive test for fat look like
Blue-Black
White
Lilac
Brick Red
- 20. Multiple Choice
What does a positive test for protein look like
Blue-Black
Brick red
White
Lilac
- 21. Multiple Choice
What reagent is used to test for reducing sugars
Iodine
Benedict's
Biuret
Ethanol
- 22. Multiple Choice
Which of these food would contain carbohydrates
Steak
Milk
Pasta
Apple
- 23. Multiple Choice
which food source contains protein
steak
bread
apple
carrot
- 24. Multiple ChoiceWhich tests would be positive if an egg muffin was tested?iodine & biuretiodine & Benedict'sbiuret & Benedict'sBenedict's & Sudan III
- 25. Multiple ChoiceBill and Ben tested a substance, which tested positive with iodine and negative with Benedict's solution. Ben said the substance was a carbohydrate, Bill said it wasn't. Who is correct?Bill: if it was a carbohydrate it would have tested positive with Benedict'sBill: if it was a carbohydrate it would have tested negative with iodineBen: iodine only tests for one type of carbohydrate, not all typesBen: if Benedict's tests negative then a carbohydrate is present
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