higher human unit 1.2

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D Q H S K I E C T A X P C U B K U S R U L
X M E T R R S U P S L N M N K N Y F R R I
I C V R V G A M D X O I J O Q E T U A W X
L Q G O Q N R H R D Y V M I C F E K G S A
E R N N T I E Y X N O G N S S N I N U R V
H Q J G I C M D Q A B J E I M U X L S S S
E W M C X N Y R V R U X T V L C L T E A G
L U G H W T L O W T M K A I B L E W S K E
B F A E V N O G I S E D H D G E W V O A C
U F L M G V P E J G N Y P L W O X B B V A
O H L I D X A N Q N I B S L M T N E I N I
D U G C J R N B R I N R O E B I G W R L E
E G T A W V D O T D E Y H C I D U L Y J E
X B I L Q E G N C A D L P E W E I M X D W
R W T B D Q D D R E A H M R C S W V O Y H
T W Y O Y U U S G L U E W O Y X M O E E P
T I L N W G H C C Q I G O F I M H S D D T
Y V G D P Y N Q T D W Q X E E E K J G Q V
I O C S W R R J B X S G E B C R P A O E W
X T O X K U M S J Q S B S J K D Y E Q B X
P Y E L M N A D P C Q S E Q Y M X J P N E

Clues

  • Describe the shape of DNA (6, 5)
  • how are the complimentary bases between the strands of DNA held together? (8, 5)
  • In DNA which base is complementary to thymine (7)
  • on which strand is DNA replication carried out continuously? (7, 6)
  • what are the building blocks which make up a strand af DNA? (11)
  • What bonds form to create the sugar -phosphate backbone? (6, 8, 5)
  • what molecule is at the 3' end of a DNA strand? (11, 5)
  • what molecule is at the 5' end of DNA (9)
  • when does DNA replication take place? (6, 4, 8)
  • which enzyme is required to add the free DNA nucleotides? (3, 10)

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