The Double Helix

c Pearson Education Limited 2008

The Double Helix - Answer keys

of

Answer keys

LEVEL 6

PENGUIN READERS

Teacher Support Programme

Book key

1 Openanswers
2 a Nucleic b nucleotides c deoxyribonucleic

d molecule e helix f structure

g X-raydiffraction h  Genes  i proteins

j chromosomes k phosphate l ion

3 Openanswers
4 a MaxPerutz b SirLawrenceBragg

c FrancisCrick d MauriceWilkins

e RosalindFranklin f LinusPauling

g HermanKalckar h SalvadorLuria

5–6 Openanswers
7 a 3 b 6 c 1 d 2 e 7 f 4 g 5
8 Openanswers
9 Openanswers(c)
10 1 d 2 a 3 e 4 b 5 c
11–12 Openanswers
13 a T b T c F d T e F f F g T
14 a Hewasabiologist.

b TheywereconnectedtotheLabourParty.

c Hehadveryshorthair.

d Hedidn’thavealargevocabulary.

e Snowblockingtheroad.

15 Openanswers(a No b No c Yes d No

e Yes f No g Yes)

16 a Thehostessfoundhiseccentricityinteresting.

b HepretendedthatWatsonwasworkingonanother

PhD.

c HewantedtomeetsomeFrenchgirls.

d WatsonandCrickwerelookingforsimplicity,not

complexity.

17 Openanswers
18 Openanswers(b)
19 a bacteria b phosphate c helical d water

e backbone f bonds g type

20 Openanswers
21 Openanswers(c)
22 a 2 b 6 c 8 d 1 e 4 f 7 g 3 h 5
23–34 Openanswers

Discussion activities key

1–35 Openanswers

Activity worksheets key

1 a Watson b Bragg c Crick d Perutz
  e Wilkins f Franklin g Pauling h  Kalcar
  i Kendrew

2 a T b T c F d T e F f F g T h F
i F
3 a 6 b 3 c 4 d 2 e 1 f 5
4 a T b F c T d F e T f T
5 a Scotland b Washington c Copenhagen
  d London e  Oxford f Columbia
6  a 5 b 6 c 1 d  2 e 4 f 3
7 a to b because c so d why e to
  f because g  because
8 a chosen b criticism c satisfactory
  d doubtful e uncomfortable f involvement
  g marvelously h strongly i acceptance
9  a virus
  b ribonucleicacid(RNA)
  c neutral
  d molecule
  e deoxyribonucleicacid(DNA)
  f X-ray
  g protein
  h alpha
  i  chromosome
  j carbon

Progress test key

1 a
2 c
3 b
4 a
5 b
6 a
7 b
8 a
9 b
10  c
11 b
12 a
13 b
14 c
15 b
16 c
17 b
18 b