Test
Biological Molecules
Este test tiene tiempo límite, así que se abre en el reproductor de siempre.
Preguntas del test (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.
- AVerdadero
- 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 ?
- AVerdadero
- 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?
- AVerdadero
- 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?
- AVerdadero
- 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.
- AVerdadero
- BFalso
24Plants and animals can use beta glucose.
- AVerdadero
- 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.
- AVerdadero
- BFalso
32Starch is made of 1 polysaccharide, cellulose is made of 2.
- AVerdadero
- BFalso
33Both starch and cellulose are insoluble and found in plants
- AVerdadero
- BFalso
34Starch is for structural support, cellulose is an energy store.
- AVerdadero
- BFalso
35Glycogen is the main energy store in animals.
- AVerdadero
- 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.
- AVerdadero
- BFalso
50Precipitation will be filtered out before using a colorimeter?
- AVerdadero
- BFalso
Información
- Descripción
- AS Unit F212: Module 1
- Autor
- clidna
- Idioma
- English
- Visitas
- 156
- Historial
- Creado el 5 abr 2014 · actualizado el 24 nov 2016
- Etiquetas
- Valoración
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