Proteins

Jubby
Quiz by Jubby, updated more than 1 year ago
Jubby
Created by Jubby about 6 years ago
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Description

A Levels AS Bio Quiz on Proteins, created by Jubby on 09/26/2015.

Resource summary

Question 1

Question
Proteins are complex bio-chemicals containing?...
Answer
  • Carbon, oxygen,hydrogen
  • 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
  • Polysaccharides
  • Peptides
  • Protons
  • 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
  • Right & N-terminus
  • Left & N-terminus
  • Left & C-terminus
  • 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
  • Right & C-terminus
  • Left & C-terminus
  • Right & N-terminus
  • Left & N-terminus

Question 11

Question
How many different amino acids are found in nature?
Answer
  • 45
  • 15
  • 16
  • 20

Question 12

Question
How many amino acids are in a dipeptide?
Answer
  • 3
  • 2
  • 4
  • 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
  • Their names
  • R group
  • Amount of atoms

Question 15

Question
What is the name of the test for proteins?
Answer
  • Biuret
  • Iodine
  • Emulsion
  • 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
  • Alkaline, Copper (II) Sulfate
  • Acidic, sodium hydroxide
  • 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
  • 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
  • Ionic
  • Covalent
  • Disulfide bridges
  • Hydrogen
  • Van der waals

Question 21

Question
The tertiary structure is even more coiled/folded... what causes this?
Answer
  • 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

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
  • immune response
  • digestion
  • structure
  • diffusion
  • temperature maintenance
  • respiration
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