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