3580476
Description
Quiz by Julia Romanów, updated more than 1 year ago
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Created by Julia Romanów
almost 9 years ago
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Question 1
Question
Proteins are complex bio-chemicals containing?...
Answer
-
Carbon, oxygen,hydrogen
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Carbon , hydrogen, oxygen, nitrogen, sulphur
-
Oxygen, nitrogen, carbon, hydrogen
Question 2
Question
Proteins are made up of amino acids
Answer
- True
- False
Question 3
Question
Proteins are p__________________
Answer
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Polysaccharides
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Peptides
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Protons
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Polymers
Question 4
Question
If proteins are polymers ,and are made up of amino acids, then amino acids must be monosaccharides.
Answer
- True
- False
Question 5
Question
Some amino acids form Benzine ring structures
Answer
- True
- False
Question 6
Question
Carbohydrates form glycosidic bonds
Lipids peptide bonds
and Proteins form ester bonds during condensation reaction
Answer
- True
- False
Question 7
Question
A peptide bond can be reversed by hydrolisis
Answer
- True
- False
Question 8
Question
Roughly how many amino acids make 1 protein?
Answer
-
50
-
100
-
1000
-
10
-
5
Question 9
Question
In a protein on which side is the amino acid group found? And what is it called in terms of 'terminus'?
Answer
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Right & N-terminus
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Left & N-terminus
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Left & C-terminus
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Right & C-terminus
Question 10
Question
In a protein on which side is the carboxyl group found? And what is it called in terms of terminus?
Answer
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Right & C-terminus
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Left & C-terminus
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Right & N-terminus
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Left & N-terminus
Question 11
Question
How many different amino acids are found in nature?
Answer
-
45
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15
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16
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20
Question 12
Question
How many amino acids are in a dipeptide?
Answer
-
3
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2
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4
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20
Question 13
Question
Water is released during a hydrolysis reaction.
Answer
- True
- False
Question 14
Question
What's the only difference between different amino acids?
Answer
-
Length of carbon chain
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Their names
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R group
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Amount of atoms
Question 15
Question
What is the name of the test for proteins?
Answer
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Biuret
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Iodine
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Emulsion
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Benedict's
Question 16
Question
Biuret test: to test the sample it first has to be ________________ so you add a few drops of ___________________________________.
Answer
-
Acidic , Hydrochloric acid
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Alkaline, Copper (II) Sulfate
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Acidic, sodium hydroxide
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Alkaline, Sodium hydroxide
Question 17
Question
Then you add copper (II) sulfate so the solution changes colour
Answer
- True
- False
Question 18
Question
If the result is positive the solutions turns...?
Answer
-
White
-
Purple
-
Blue
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Orange, yellow, green, red or brown
Question 19
Question
The primary structure of proteins is made up of monomers called amine acids
Answer
- True
- False
Question 20
Question
Depending on the sequence of amino acids in the primary structure the secondary structure will be in the shape of a a-helix or b-pleated sheet...this is due to what type of bonding?
Answer
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Ionic
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Covalent
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Disulfide bridges
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Hydrogen
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Van der waals
Question 21
Question
The tertiary structure is even more coiled/folded... what causes this?
Answer
-
Ionic, hydrogen and covalent bonding
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Ionic, disufide bridges and covalent bonding
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Hydrogen, covalent and disulphide bridges
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Van der waals, ionic, disulphide bridges and hydrogen bonding
Question 22
Question
Sometimes the tertiary structure is the last structure of a protein
Answer
- True
- False
Question 23
Question
Disulfide bridges occur between two cysteine amino acids in the polypeptide chain(s).
Answer
- True
- False
Question 24
Question
Between the two cystein amino acids bond by the sulphur atoms...this is ionic bonding.
Answer
- True
- False
Question 25
Question
the quaternary structure is how different polypeptide chains are held together by bonds.
Answer
- True
- False
Question 26
Question
Which do not use proteins
Answer
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immune response
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digestion
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structure
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diffusion
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temperature maintenance
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respiration
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