Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology🔬 > Tests For Starch🍞, Sugar🍪, Protein🧀 And Fat🍩 > Flashcards

Tests For Starch🍞, Sugar🍪, Protein🧀 And Fat🍩 Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

What is the starch test called?

A

the iodine test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the method for the starch test (iodine test)?

A

-add several drops of iodine to food or liquid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the result of the starch (iodine) test?

A

Orange/yellow to blue/black

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does the Benedict’s test test for?

A

Sugar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the proper name for the sugar test?

A

Benedict’s test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the method for the sugar (Benedict’s) test?

A
  • dissolve food in water with pestle and mortar
  • add to boiling tube
  • add 2cm3 of Benedict’s solution
  • place in a water-bath for 2-3 minutes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the result for the Benedict’s test (sugar test)

A

Blue to green to brick red

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the biuret test testing for?

A

Protein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the proper name for the protein test?

A

The biuret test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the method for the protein test (biuret test)?

A
  • dissolve food in 1cm3 of water using pestle and mortar
  • add to boiling tube
  • add 1cm3 do dilute sodium hydroxide
  • add 3 drops of copper sulphate
  • shake and watch
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the result of the biuret (protein) test?

A

Starts a pale blue then turns violet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does the emulsion test test for?

A

Fat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the proper name for the fat test?

A

The emulsion test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the method for the emulsion (fat) test?

A
  • cut pieces of food into very small pieces
  • place in a boiling tube
  • add 3cm3 of ethanol
  • shake and leave to settle
  • half fill a 2nd test tube with water
  • carefully add drops of the solution from the 1st test tube to the water
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the result of the emulsion (fat) test?

A

Water will become very cloudy - especially at the top of the test tube.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is ANOTHER test for fat called?

A

The paper spot test

17
Q

What does the paper spot test test for?

A

Fat

18
Q

What is the method for the paper spot (fat) test?

A
  • rub a solid food on a piece of grease-proof paper.
19
Q

What is the result for the paper spot (fat) test?

A

The fat will leave a greasy translucent stain on the paper

20
Q

The iodine test tests for what?

A

Starch

Biology🔬 (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions