life processes.

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

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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