Quiz
Biological Molecules
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Perguntas do quiz (50)
1Which part of an amino acid differs to introduce variation?
- AAmino Group (NH2)
- BAcid Group (COOH)
- CR Group
2Reactions that break down molecules are called?
- ACatabolic reactions
- BAnabolic reaction
3Enzymes that catalyse the breakage of peptide bonds are called?
- ADiastases
- BLactases
- CProteases
4A peptide (covalent) bond forms between which parts of amino acids?
- AAn acid group and an R group
- BAn acid group and an amino group
- CAn amino group and an R group
5When amino acids join together it is called?
- ASynthesis
- BHydrolysis
6The name of many amino acids is?
- APolypeptide
- BDipeptide
7There are 35 naturally occurring amino acids.
- AVerdadeiro
- BFalso
8The specific sequence of amino acids is the?
- APrimary structure
- BSecondary structure
9The polypeptide coiling into an alpha-helix or folding into a beta-pleated sheet is caused by?
- AIonic bonding
- BHydrogen bonds
- CDisulfide bridges
10A disulfide bridge occurs between?
- ACystine
- BGylcine
11The tertiary structure (proteins) is caused by which bonds?
- AHydrophobic and hydrophilic interactions
- BIonic bonding
- CDisulfide bridges
- DGlycosidic bonds
- EEster bonds
- FHydrogen bonding
12Tertiary bonding forms two structures of proteins?
- APigment
- BFibrous
- CGlobular
13Globular proteins have which roles within the body?
- AMetabolic roles
- BStructural roles
14fibrous proteins usually soluble ?
- AVerdadeiro
- BFalso
15Quaternary structure is?
- AMore than 1 polypeptide subunit joined together
- BFurther coiling and folding of a polypeptide
16How many polypeptide sub-units is haemoglobin made up of?
- A6
- B4
- C2
- D3
17Collagen is a fibrous protein?
- AVerdadeiro
- BFalso
18How many polypeptide chains is collagen made up of?
- A4
- B2
- C3
- D6
19What are the 3 main amino acids making by collagen?
- AGlycine
- BCystine
- CAlanine
- DProline
20The role of haemoglobin is to
- ATransport O2 and CO2 around the body
- BFight infection
- CAid blood clotting
21Haemoglobin contains a prosthetic group?
- AVerdadeiro
- BFalso
22Glucose is a
- APentose sugar (5 carbon atoms)
- BHexose sugar (6 carbon atoms)
23In alpha glucose the hydrogen is above the hydroxyl on the 1st carbon in the ring.
- AVerdadeiro
- BFalso
24Plants and animals can use beta glucose.
- AVerdadeiro
- BFalso
25Monosaccharides join to form di/polysaccharides by?
- AEster bonds
- BGlycosidic bonds
- CHydrogen bonds
- DPeptide bonds
26The disaccharide of alpha glucose is?
- AMaltose
- BAmylose
27Starch is made of?
- AAmylose
- BCellulose
- CAmylopectin
- DGlycogen
28Structure of amylose?
- AUnbranched
- BBranched
- CAlpha-glucose
- DBeta-glucose
- ECoiled and compact
29Structure of amylopectin?
- ABranched
- BUnbranched
- CAlpha-glucose
- DBeta-glucose
30Structure of cellulose?
- ABranched
- BUnbranched
- CStraight chains= fibrils
- DCoiled and compact
31Starch is made of alpha-glucose and cellulose is made of beta glucose.
- AVerdadeiro
- BFalso
32Starch is made of 1 polysaccharide, cellulose is made of 2.
- AVerdadeiro
- BFalso
33Both starch and cellulose are insoluble and found in plants
- AVerdadeiro
- BFalso
34Starch is for structural support, cellulose is an energy store.
- AVerdadeiro
- BFalso
35Glycogen is the main energy store in animals.
- AVerdadeiro
- BFalso
36Structure of glycogen?
- ABranched
- BUnbranched
- CCompact
- DJoined by ester bonds
- EJoined by 1,4 glycosidic bonds
- FAlpha-glucose
- GBeta-glucose
37Why has glycogen a compact and branched structure?
- ATo provide support
- BFor storage and breakdown
38Cellulose forms straight chains linked by hydrogen bonds= microfibrils=macrofibrils for?
- AStructural support
- BEnergy store
39A triglyceride is made up of?
- A1 molecule of glycerol with 4 fatty acids
- B1 molecule of glycerol with 3 fatty acids
- C1 molecule of glycerol with 2 fatty acids
40A Phospholipid is made up of?
- A1 molecule of glycerol with 3 fatty acids
- B1 molecule of glycerol with 3 fatty acids and a phosphate group
- C1 molecule of glycerol with 2 fatty acids and a phosphate group
41The phosphate group is?
- AHydrophilic (likes water)
- BHydrophobic (dislikes water)
42Triglycerides are used as a?
- AMolecules to stabilise the cell membrane
- BEnergy storage molecule
43Phospholipids make up the cell membrane bilayer as do not let water-soluble substances pass through due to?
- ANo gaps for substances to pass through
- BCentre is hydrophobic (tails)
- COutside layer is hydrophobic (heads)
44Cholesterol stabilises bilayer by?
- Abinding to hydrophobic tails packing them closer together
- BCreating an extra layer outside of the membrane
45The test for proteins is the?
- ABiuret test
- BEthanol emulsion test
- CIodine test
- DBenedict's test
46Positive result for starch using iodine solution is?
- Ayellow/brown ----> blue/black
- Byellow/brown ----> purple/blue
- Cyellow/brown ----> red/orange
47The concentration of glucose say be determined by?
- ABenedict's solution
- BA colorimeter
48A colorimeter works by?
- AMeasuring the amount of light passing through the sample.
- BComparing the colour to a defined scale.
49The more Cu(II)SO4 used up in Benedict's test the more light will be transmitted.
- AVerdadeiro
- BFalso
50Precipitation will be filtered out before using a colorimeter?
- AVerdadeiro
- BFalso
Informações
- Descrição
- AS Unit F212: Module 1
- Autor
- clidna
- Idioma
- English
- Visualizações
- 156
- Histórico
- Criado em 5 abr 2014 · atualizado em 24 nov 2016
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