6.6 crossword!

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Across
  1. 1. one half of 46
  2. 5. a casual man with ginger hair
  3. 7. Hormones, homeostasis and ?
  4. 8. when body temperature drops, thyroxin stimulates production of what?
  5. 9. an out-of-fashion speculation
  6. 10. leptin experiments were carried out by surgically merging the blood circulation of obese and healthy these
Down
  1. 1. the embryonic gonads will transform into these in the absence of the TDF protein
  2. 2. type 1 diabetes occurs during this
  3. 3. the body needs this to manufacture ATP
  4. 4. these rhythms are the physiological reactions of the organism to the 24-hour day-night cycle.
  5. 6. thyroxin is largely made of this