722159
Frage 1
Frage
Which part of an amino acid differs to introduce variation?
Antworten
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Amino Group (NH2)
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Acid Group (COOH)
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R Group
Frage 2
Frage
Reactions that break down molecules are called?
Antworten
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Catabolic reactions
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Anabolic reaction
Frage 3
Frage
Enzymes that catalyse the breakage of peptide bonds are called?
Antworten
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Diastases
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Lactases
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Proteases
Frage 4
Frage
A peptide (covalent) bond forms between which parts of amino acids?
Antworten
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An acid group and an R group
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An acid group and an amino group
-
An amino group and an R group
Frage 5
Frage
When amino acids join together it is called?
Antworten
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Synthesis
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Hydrolysis
Frage 6
Frage
The name of many amino acids is?
Antworten
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Polypeptide
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Dipeptide
Frage 7
Frage
There are 35 naturally occurring amino acids.
Antworten
- True
- False
Frage 8
Frage
The specific sequence of amino acids is the?
Antworten
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Primary structure
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Secondary structure
Frage 9
Frage
The polypeptide coiling into an alpha-helix or folding into a beta-pleated sheet is caused by?
Antworten
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Ionic bonding
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Hydrogen bonds
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Disulfide bridges
Frage 10
Frage
A disulfide bridge occurs between?
Antworten
-
Cystine
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Gylcine
Frage 11
Frage
The tertiary structure (proteins) is caused by which bonds?
Antworten
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Hydrophobic and hydrophilic interactions
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Ionic bonding
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Disulfide bridges
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Glycosidic bonds
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Ester bonds
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Hydrogen bonding
Frage 12
Frage
Tertiary bonding forms two structures of proteins?
Antworten
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Pigment
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Fibrous
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Globular
Frage 13
Frage
Globular proteins have which roles within the body?
Antworten
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Metabolic roles
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Structural roles
Frage 14
Frage
fibrous proteins usually soluble ?
Antworten
- True
- False
Frage 15
Frage
Quaternary structure is?
Antworten
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More than 1 polypeptide subunit joined together
-
Further coiling and folding of a polypeptide
Frage 16
Frage
How many polypeptide sub-units is haemoglobin made up of?
Antworten
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6
-
4
-
2
-
3
Frage 17
Frage
Collagen is a fibrous protein?
Antworten
- True
- False
Frage 18
Frage
How many polypeptide chains is collagen made up of?
Antworten
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4
-
2
-
3
-
6
Frage 19
Frage
What are the 3 main amino acids making by collagen?
Antworten
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Glycine
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Cystine
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Alanine
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Proline
Frage 20
Frage
The role of haemoglobin is to
Antworten
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Transport O2 and CO2 around the body
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Fight infection
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Aid blood clotting
Frage 21
Frage
Haemoglobin contains a prosthetic group?
Antworten
- True
- False
Frage 22
Frage
Glucose is a
Antworten
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Pentose sugar (5 carbon atoms)
-
Hexose sugar (6 carbon atoms)
Frage 23
Frage
In alpha glucose the hydrogen is above the hydroxyl on the 1st carbon in the ring.
Antworten
- True
- False
Frage 24
Frage
Plants and animals can use beta glucose.
Antworten
- True
- False
Frage 25
Frage
Monosaccharides join to form di/polysaccharides by?
Antworten
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Ester bonds
-
Glycosidic bonds
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Hydrogen bonds
-
Peptide bonds
Frage 26
Frage
The disaccharide of alpha glucose is?
Antworten
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Maltose
-
Amylose
Frage 27
Frage
Starch is made of?
Antworten
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Amylose
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Cellulose
-
Amylopectin
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Glycogen
Frage 28
Frage
Structure of amylose?
Antworten
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Unbranched
-
Branched
-
Alpha-glucose
-
Beta-glucose
-
Coiled and compact
Frage 29
Frage
Structure of amylopectin?
Antworten
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Branched
-
Unbranched
-
Alpha-glucose
-
Beta-glucose
Frage 30
Frage
Structure of cellulose?
Antworten
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Branched
-
Unbranched
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Straight chains= fibrils
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Coiled and compact
Frage 31
Frage
Starch is made of alpha-glucose and cellulose is made of beta glucose.
Antworten
- True
- False
Frage 32
Frage
Starch is made of 1 polysaccharide, cellulose is made of 2.
Antworten
- True
- False
Frage 33
Frage
Both starch and cellulose are insoluble and found in plants
Antworten
- True
- False
Frage 34
Frage
Starch is for structural support, cellulose is an energy store.
Antworten
- True
- False
Frage 35
Frage
Glycogen is the main energy store in animals.
Antworten
- True
- False
Frage 36
Frage
Structure of glycogen?
Antworten
-
Branched
-
Unbranched
-
Compact
-
Joined by ester bonds
-
Joined by 1,4 glycosidic bonds
-
Alpha-glucose
-
Beta-glucose
Frage 37
Frage
Why has glycogen a compact and branched structure?
Antworten
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To provide support
-
For storage and breakdown
Frage 38
Frage
Cellulose forms straight chains linked by hydrogen bonds= microfibrils=macrofibrils for?
Antworten
-
Structural support
-
Energy store
Frage 39
Frage
A triglyceride is made up of?
Antworten
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1 molecule of glycerol with 4 fatty acids
-
1 molecule of glycerol with 3 fatty acids
-
1 molecule of glycerol with 2 fatty acids
Frage 40
Frage
A Phospholipid is made up of?
Antworten
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1 molecule of glycerol with 3 fatty acids
-
1 molecule of glycerol with 3 fatty acids and a phosphate group
-
1 molecule of glycerol with 2 fatty acids and a phosphate group
Frage 41
Frage
The phosphate group is?
Antworten
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Hydrophilic (likes water)
-
Hydrophobic (dislikes water)
Frage 42
Frage
Triglycerides are used as a?
Antworten
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Molecules to stabilise the cell membrane
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Energy storage molecule
Frage 43
Frage
Phospholipids make up the cell membrane bilayer as do not let water-soluble substances pass through due to?
Antworten
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No gaps for substances to pass through
-
Centre is hydrophobic (tails)
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Outside layer is hydrophobic (heads)
Frage 44
Frage
Cholesterol stabilises bilayer by?
Antworten
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binding to hydrophobic tails packing them closer together
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Creating an extra layer outside of the membrane
Frage 45
Frage
The test for proteins is the?
Antworten
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Biuret test
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Ethanol emulsion test
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Iodine test
-
Benedict's test
Frage 46
Frage
Positive result for starch using iodine solution is?
Antworten
-
yellow/brown ----> blue/black
-
yellow/brown ----> purple/blue
-
yellow/brown ----> red/orange
Frage 47
Frage
The concentration of glucose say be determined by?
Antworten
-
Benedict's solution
-
A colorimeter
Frage 48
Frage
A colorimeter works by?
Antworten
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Measuring the amount of light passing through the sample.
-
Comparing the colour to a defined scale.
Frage 49
Frage
The more Cu(II)SO4 used up in Benedict's test the more light will be transmitted.
Antworten
- True
- False
Frage 50
Frage
Precipitation will be filtered out before using a colorimeter?
Antworten
- True
- False
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