life processes.

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

Clues

  • what are enzymes? (10, 9)
  • what is the area that the substrate attaches to called? (3, 6, 4)
  • what is the molecule that an enzyme acts on called? (1, 9)
  • what is the volume of oxygen needed to completely oxidise the lactic acid that builds up in the body during anaerobic respiration is called? (6, 4)
  • which organs excrete? (5, 7, 4)
  • why do organisms respire? (2, 3, 6)

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